© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/12/18
Metal-Oxide Varistors (MOVs)
Radial Lead Varistors > ZA Series
Description
The ZA Series of transient voltage surge suppressors
are radial leaded varistors (MOVs) designed for use in
the protection of low and medium-voltage circuits and
systems. Typical applications include motor control,
telecom, solenoid, and power supply circuits to protect
circuit board components and maintain data integrity.
These devices are available in five model sizes:
5mm, 7mm, 10mm, 14mm and 20mm, and feature
a wide VDC voltage range of 5.5V to 615V.
See ZA Series Device Ratings and Specifications
Table for part number and brand information.
Features
• Lead–free, Halogen-
Free and RoHS
compliant
• Wide operating voltage
range VM(AC)RMS
4V to 460V
• DC voltage ratings
5.5V to 615V
• No derating up to
85ºC ambient
• 5 model sizes
available: 5, 7, 10,
14, and 20mm
• Radial lead package for
hard-wired or printed
circuit board designs
• Available in tape and
reel or bulk pack
• Standard lead
form options
Agency Approvals
Absolute Maximum Ratings
• For ratings of individual members of a series, see Device Ratings and Specifications chart
Continuous ZA Series Units
Steady State Applied Voltage:
AC Voltage Range (VM(AC)RMS)4 to 460 V
DC Voltage Range (VM(DC))5.5 to 615 V
Transients:
Peak Pulse Current (ITM)
For 8/20µs Current Wave (See Figure 2) 50 to 6500 A
Single Pulse Energy Range (Note 1)
For 10/1000µs Current Wave (WTM) 0.1 to 52 J
Operating Ambient Temperature Range (TA) -55 to +85 ºC
Storage Temperature Range (TSTG) -55 to +125 ºC
Temperature Coefficient (aV) of Clamping Voltage (VC) at Specified Test Current <0.01 %/ºC
Hi-Pot Encapsulation (COATING Isolation Voltage Capability)
(Dielectric must withstand indicated DC voltage for one minute per MIL–STD–202, Method 301) 2500 V
COATING Insulation Resistance 1000 MΩ
CAUTION: Stresses above those listed in "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any
other conditions above those indicated in the operational sections of this specification is not implied.
ZA Varistor Series RoHS
Additional Information
Datasheet Samples
Resources
Agency Agency Approval Agency File
Number
UL1449* E320116
CECC 42201-006
IEC 61051-1
IEC 61051-2
IEC 60950-1 (Annex Q)**
116895
CECC 42201-006
IEC 61051-1
IEC 61051-2
IEC 60950-1 (Annex Q)**
E1273/F
Notes:
* - Except parts V8ZAxxP and V12ZAxxP.
** - For 14mm (V120 to V180) and 20mm (V120 to V180).
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/12/18
Metal-Oxide Varistors (MOVs)
Radial Lead Varistors > ZA Series
ZA Series Ratings & Specifications
Part
Number Branding Model Size
Disc Dia. (mm)
Maximum Rating (85°C) Specifications (25°C)
Continuous Transient Varistor Voltage at
1mA
DC Test Current
Maximum
Clamping
Voltage
8 x 20µs
Typical
Capaci-
tance
f = 1MHz
VRMS VDC
Energy 10
x 1000µs
Peak
Current
8 x 20µs
VM(AC) VM(DC) WTM ITM VNOM
Min
VNOM
Max VCIPK C
(V) (V) (J) (A) (V) (V) (V) (A) (pF)
V8ZA05P PZ08 5 4 5.5 0.1 50 6 11 30 1 2000
V8ZA1P P08Z1 7 4 5.5 0.4 100 611 22 2.5 4190
V8ZA2P P08Z2 10 4 5.5 0.8 250 6 11 20 5 7000
V12ZA05P PZ12 5 6 8 0.14 50 9 16 37 1 1700
V12ZA1P P12Z1 7 6 8 0.6 100 916 34 2.5 3350
V12ZA2P P12Z2 10 6 8 1.2 250 9 16 30 5 6100
V18ZA05P PZ18 5 10 14 0.17 100 16.2 19.8 36 1 1400
V18ZA1P P18Z1 7 10 14 0.8 250 16.2 19.8 36 2.5 2700
V18ZA2P P18Z2 10 10 14 1. 5 500 16.2 19.8 36 5 5300
V18ZA3P P18Z3 14 10 14 3.5 1000 16.2 19.8 36 10 18870
V18ZA20P P18Z20 20 10 14 10 2000 16.2 19.8 37 20 22000
V18ZA40P P18Z40 20 10 14 80
(Note2) 2000 16.2
(Note 3) 19.8 37 20 22000
V22ZA05P PZ22 5 14 18 0.2 100 19.8 24.2 43 1 1220
V22ZA1P P22Z1 7 14 18 0.9 250 19.8 24.2 43 2.5 2375
V22ZA2P P22Z2 10 14 18 2 500 19.8 24.2 43 5 4500
V22ZA3P P22Z3 14 14 18 41000 19.8 24.2 43 10 14730
V24ZA20P P24Z20 20 14 18 12 2000 19.8 24.2 43 20 18000
V24ZA50P P24Z50 20 14 18
(Note 4)
100
(Note 2) 2000 20.7
(Note 3) 25.3 43 20 18000
V27ZA05P PZ27 5 17 22 0.25 100 24.3 29.7 53 1 920
V27ZA1P P27Z1 7 17 22 1 250 24.3 29.7 53 2.5 1875
V27ZA2P P27Z2 10 17 22 2.5 500 24.3 29.7 53 5 3850
V27ZA4P P27Z4 14 17 22 5 1000 24.3 29.7 53 10 11480
V27ZA20P P27Z20 20 17 22 14 2000 24.3 29.7 53 20 13000
V27ZA60P P27Z60 20 17 22 100 (Note 2) 2000 24.3
(Note 3) 29.7 50 20 13000
V33ZA05P PZ33 5 20 26 0.3 100 29.7 36.3 65 1 790
V33ZA1P P33Z1 7 20 26 1.2 250 29.7 36.3 65 2.5 1620
V33ZA2P P33Z2 10 20 26 3 500 29.7 36.3 65 5 3495
V33ZA5P P33Z5 14 20 26 6 1000 29.7 36.3 65 10 9290
V33ZA20P P33Z20 20 20 26 18 2000 29.7 36.3 65 20 13000
V33ZA70P P33Z70 20 21 27 100
(Note 2) 2000 29.7
(Note 3) 36.3 58 20 13000
V36ZA20P P36Z20 20 23 28 20 2000 32.4 39.6 70 20 12000
V36ZA80P P36Z80 20 23 28 100
(Note 2) 2000 32.4
(Note 3) 39.6 63 20 12000
V39ZA05P PZ39 5 25 31 0.3 100 35.1 42.9 79 1 675
V39ZA1P P39Z1 7 25 31 1.2 250 35.1 42.9 79 2.5 1350
V39ZA3P P39Z3 10 25 31 3 500 35.1 42.9 76 53100
V39ZA6P P39Z6 14 25 31 7. 2 1000 35.1 42.9 76 10 7000
V39ZA20P P39Z20 20 25 31 20 2000 35.1 42.9 76 20 12000
V47ZA05P PZ47 5 30 38 0.4 100 42.3 51.7 93 1 585
V47ZA1P P47Z1 7 30 38 1.8 250 42.3 51.7 93 2.5 1245
V47ZA3P P47Z3 10 30 38 4.5 500 42.3 51.7 93 5 2590
V47ZA7P P47Z7 14 30 38 8.8 1000 42.3 51.7 93 10 6270
V47ZA20P P47Z20 20 30 38
(Note 6)
23
(Note 7) 2000 42.3 51.7 93 20 11000
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/12/18
Metal-Oxide Varistors (MOVs)
Radial Lead Varistors > ZA Series
Part
Number Branding Model Size
Disc Dia. (mm)
Maximum Rating (85°C) Specifications (25°C)
Continuous Transient Varistor Voltage at
1mA
DC Test Current
Maximum
Clamping
Voltage
8 x 20µs
Typical
Capaci-
tance
f = 1MHz
VRMS VDC
Energy 10
x 1000µs
Peak
Current
8 x 20µs
VM(AC) VM(DC) WTM ITM VNOM
Min
VNOM
Max VCIPK C
(V) (V) (J) (A) (V) (V) (V) (A) (pF)
V56ZA05P PZ56 5 35 45 0.5 100 50.4 61.6 110 1 500
V56ZA2P P56Z2 7 35 45 2.3 250 50.4 61.6 110 2.5 1035
V56ZA3P P56Z3 10 35 45 5.5 500 50.4 61.6 110 5 2150
V56ZA8P P56Z8 14 35 45 10 1000 50.4 61.6 110 10 4840
V56ZA20P P56Z20 20 35 45 30 2000 50.4 61.6 110 20 10000
V68ZA05P PZ68 5 40 56 0.6 100 61.2 74.8 135 1 400
V68ZA2P P68Z2 7 40 56 3 250 61.2 74.8 135 2.5 910
V68ZA3P P68Z3 10 40 56 6.5 500 61.2 74.8 135 5 1850
V68ZA10P P68Z10 14 40 56 13 1000 61.2 74.8 135 10 3870
V68ZA20P P68Z20 20 40 56 33 2000 61.2 74.8 135 20 9000
V82ZA05P PZ82 5 50 68 2 400 73.8 90.2 135 5 355
V82ZA2P P82Z2 7 50 68 4 1200 73.8 90.2 135 10 700
V82ZA4P P82Z4 10 50 68 8 2500 73.8 90.2 135 25 1485
V82ZA12P P82Z12 14 50 68 15 4500 73.8 90.2 145 50 3380
V82ZA20P P82Z20 20 50 68 25 6500 73.8 90.2 145 100 7000
V100ZA05P PZ100 5 60 81 2.5 400 90 110 165 5310
V100ZA3P P100Z 7 60 81 5 1200 90 110 165 10 600
V100ZA4P P100Z4 10 60 81 10 2500 90 110 165 25 1200
V100ZA15P P100Z15 14 60 81 20 4500 90 110 175 50 2900
V100ZA20P P100Z20 20 60 81 30 6500 90 110 175 100 6500
V120ZA05P PZ120 5 75 102 3 400 108 132 205 5 250
V120ZA1P P120Z 7 75 102 61200 108 132 205 10 515
V120ZA4P P120Z4 10 75 102 12 2500 108 132 200 25 110 0
V120ZA6P P120Z6 14 75 102 22 4500 108 132 210 50 2450
V120ZA20P P120Z20 20 75 102 33 6500 108 132 210 100 5000
V150ZA05P PZ150 5 92 127 4 400 135 165 250 5 190
V150ZA1P PZ051 7 95 127 81200 135 165 250 10 460
V150ZA4P P150Z4 10 95 127 15 2500 135 165 250 25 860
V150ZA8P P150Z8 14 95 127 20 4500 135 165 250 50 1910
V150ZA20P P150Z20 20 95 127 45 6500 135 165 250 100 3500
V180ZA05P PZ180 5 110 153 5 400 162 198 295 5 100
V180ZA1P P180Z 7 115 153 10 1200 162 198 300 10 320
V180ZA5P P180Z5 10 115 153 18 2500 162 198 300 25 465
V180ZA10P P180Z10 14 115 153 35 4500 162 198 300 50 1190
V180ZA20P P180Z20 20 115 153 52 6500 162 198 300 100 2400
V205ZA05P PZ205 5 130 170 5.5 400 184.5 225.5 340 5 100
V220ZA05P PZ220 5 140 180 6 400 198 242 360 5 95
†V240ZA05P PZ240 5 150 200 7 400 216 264 395 5 90
†V270ZA05P PZ270 5 175 225 7. 5 400 243 297 455 5 75
†V330ZA05P PZ330 5 210 275 9 400 306 374 540 5 70
†V360ZA05P PZ360 5 230 300 9.5 400 324 396 595 5 60
†V390ZA05P PZ390 5 250 330 10 400 351 429 650 5 80
†V430ZA05P PZ430 5 275 369 11 400 387 473 710 5 75
†V470ZA05P PZ470 5 300 385 12 400 423 517 775 5 70
†V620ZA05P PZ620 5 385 505 13 400 558 682 1025 5 45
†V680ZA05P PZ680 5 420 560 14 400 612 74 8 1120 5 40
†V715ZA05P PZ715 5 440 585 15.5 400 643.5 786.5 1180 5 35
†V750ZA05P PZ750 5 460 615 17 400 675 825 1240 5 30
ZA Series Ratings & Specifications (Continued...)
Note:
1. Average power dissipation of transients not to exceed 0.2W, 0.25W, 0.4W, 0.6W or 1W for
model sizes 5mm, 7mm, 10mm, 14mm and 20mm, respectively.
2. Energy rating (auto load dump) for impulse duration of 40ms minimum to one half of peak
current, 60 sec interval (ISO7637-2 pulse 5a and ISO16750-2 Table 5A)
3. 10mA DC test current.
4. Also rated to withstand 24V for 5 minutes.
5. Higher voltages available, contact Littelfuse.
6. Also rated to withstand 48V for 5 minutes.
7. Energy rating for impulse duration of 30ms minimum to one half of peak current (Auto
Load Dump): 100J
8. The typical capacitance rating is the discrete component test result.
† Also Recognized to UL 1449, Transient Voltage Surge Suppressors File E320116
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/12/18
Metal-Oxide Varistors (MOVs)
Radial Lead Varistors > ZA Series
Should transients occur in rapid succession, the average
power dissipation is the energy (watt-seconds) per pulse
times the number of pulses per second. The power so
developed must be within the specifications shown on the
Device Ratings and Specifications Table for the specific
Current Energy and Power Dissipation Ratings
Peak Pulse Current Test Waveform
FIGURE 2. PEAK PULSE CURRENT TEST WAVEFORM
100
90
50
10
O
1
T
T
1
T
2
TIME
PERCENT OF PEAK VALUE
O
1
= Virtual Origin of Wave
T = Time From 10% to 90% of Peak
T
1
= Virtual Front time = 1.25 • t
T
2
= Virtual Time to Half Value (Impulse Duration)
Example: For an 8/20µs Current Waveform:
8s = T
1
= Virtual Front Time
20 s = T
2
= Virtual Time to Half Value
01 = Virtual Origin of Wave
T = Time from 10% to 90% of Peak
T1 = Rise Time = 1.25 x T
T2 = Decay Time
Example - For an 8/20 µs Current Waveform:
8µs = T1 = Rise Time
20µs = T2 = Decay Time
100
90
80
70
60
50
40
30
20
10
0
-55 50 60 70 80 90 100110 120130 140150
AMBIENT TEMPERATURE (
o
C)
PERCENT OF RATED VALUE
FIGURE 1. CURRENT, ENERGY AND POWER DERATING
CURVE
Figure 1A - Power Derating for Epoxy Coated
Figure 2
FIGURE 1. CURRENT, ENERGY AND POWER DERATING
CURVE
100
90
80
70
60
50
40
30
20
10
0
-55 50 60 70 80 90 100110 120130 140150
AMBIENT TEMPERATURE (
o
C)
PERCENT OF RATED VALUE
device. The operating values of a MOV need to be derated
at high temperatures as shown above. Because varistors
only dissipate a relatively small amount of average power
they are not suitable for repetitive applications that involve
substantial amounts of average power dissipation.
Figure 1B - Power Derating for Phenolic Coated
• Phenolic coated ZA Series devices are available with
improved maximum operating temperature of 125°C
• These devices also have improved temperature
cycling performance capability
• Ratings and specifications are as per standard
ZA Series except Hi–Pot Encapsulation
(Isolation Voltage Capability) = 500V
• To order: add 'X1347' to part number
(e.g. V22ZA3PX1347)
• These devices are not UL, VDE or CECC certified
• Contact factory for further details
• Product marking: LF 9
P22P3
YYWW Phenolic Coated
Option
Identifier
Lead-Free,
Halogen-Free
& RoHS Compliant
Indicator
Phenolic Coating Option -- ZA Series Varistors for Hi-
Temperature Operating Conditions: Copper Electrode Option:
• Add 'W' to the end of the part
number (e.g. V240ZA05PW)
• Copper electrode option is only available
for V240~V750 for ZA series.
• Product marking: LF 9
PZ240W
YYWW Copper Electrode
Option
Identifier
Lead-Free,
Halogen-Free
& RoHS Compliant
Indicator
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/12/18
Metal-Oxide Varistors (MOVs)
Radial Lead Varistors > ZA Series
V360ZA05(P) - V750ZA05(P)
FIGURE 5. CLAMPING VOLTAGE FOR V360ZA05(P) - V750ZA05(P) FIGURE 6. CLAMPING VOLTAGE FOR V8ZA1(P) - V68ZA2(P)
FIGURE 7. CLAMPING VOLTAGE FOR V82ZA2(P) - V180ZA1(P) FIGURE 8. CLAMPING VOLTAGE FOR V8ZA2(P) - V68ZA3(P)
FIGURE 9. CLAMPING VOLTAGE FOR V82ZA4(P) - V180ZA5(P) FIGURE 10.CLAMPING VOLTAGE FOR V18ZA3(P) - V68ZA10(P)
3000
2000
1000
500
MAXIMUM PEAK VOLTS (V)
PEAK AMPERES (A)
0.01 0.1 110100 10000.0010.0001
V750ZA05(P)
V715ZA05(P)
V680ZA05(P)
V620ZA05(P)
V470ZA05(P)
V430ZA05(P)
V390ZA05(P)
V360ZA05(P)
MAX CLAMPING VOLTAGE
MODEL SIZE 5mm
360 TO 750VN(DC) RATING
TA = -55oC TO 85oC
500
400
300
200
100
90
80
70
60
50
40
30
20
10
MAXIMUM PEAK VOLTS (V)
10-3 10-2 10 -1 10 010 110 2103
MAXIMUM CLAMPING VOLTAGE
8 TO 68VN(DC) RATING
TA = -55oC TO 85oC
PEAK AMPERES (A)
V68ZA2(P)
V56ZA2(P)
V47ZA1(P)
V39ZA1(P)
V33ZA1(P)
V27ZA1(P)
V22ZA1(P)
V12ZA1(P)
V18ZA1(P)
V8ZA1(P)
MODEL SIZE 7mm
MAXIMUM PEAK VOLTS (V)
PEAK AMPERES (A)
10-2 10 -1 10 010 110 210 3
10-3
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 7mm
82 TO 180VN(DC) RATING
TA = -55oC TO 85oC
4,000
3,000
2,000
1,000
900
800
700
600
500
400
300
200
100
104
V180ZA1(P)
V150ZA1(P)
V120ZA1(P)
V100ZA3(P)
V82ZA2(P)
500
400
300
200
100
90
80
70
60
50
40
30
20
10
MAXIMUM PEAK VOLTS (V)
10-3 10-2 10 -1 10 010 110 2103
PEAK AMPERES (A)
V68ZA3(P)
V56ZA3(P)
V47ZA3(P)
V39ZA3(P)
V33ZA2(P)
V27ZA2(P)
V22ZA2(P)
V18ZA2(P)
V8ZA2(P)
V12ZA2(P)
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 10mm
8 TO 68VN(DC) RATING
TA = -55oC TO 85oC
MAXIMUM PEAK VOLTS (V)
PEAK AMPERES (A)
10-2 10 -1 10 010 110 210 3
10-3
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 10mm
82 TO 180VN(DC) RATING
TA = -55oC TO 85oC
4,000
3,000
2,000
1,000
900
800
700
600
500
400
300
200
100
104
V180ZA5(P)
V150ZA4(P)
V120ZA4(P)
V100ZA4(P)
V82ZA4(P)
600
500
400
300
200
100
90
80
70
60
50
40
30
20
10-3 10 -2 10 -1 10 010 110 2103
PEAK AMPERES (A)
MAXIMUM PEAK VOLTS (V)
V68ZA10(P)
V56ZA8(P)
V47ZA7(P)
V39ZA6(P)
V33ZA5(P)
V27ZA4(P)
V22ZA3(P)
V18ZA3(P)
MAXIMUM CLAMPING VOLTAGE
18 TO 68VN(DC) RATING
TA = -55oC TO 85oC
MODEL SIZE 14mm
FIGURE 3. CLAMPING VOLTAGE FOR V8ZA05(P) - V68ZA05(P)
600
500
400
300
200
100
90
80
70
60
50
40
30
20
MAXIMUM PEAK VOLTS (V)
PEAK AMPERES (A)
10-2 10-1 10 010 110 210 3
MAX CLAMPING VOLTAGE
MODEL SIZE 5mm
8 TO 68VN(DC) RATING
TA = -55oC TO 85oC
10
V68ZA05(P)
V56ZA05(P)
V47ZA05(P)
V39ZA05(P)
V33ZA05(P)
V27ZA05(P)
V22ZA05(P)
V18ZA05(P)
V12ZA05(P)
V8ZA05(P)
10-3
Maximum Clamping Voltage for 5mm Parts
V8ZA05(P) - V68ZA05(P) V82ZA05(P) - V33ZA05(P)
FIGURE 4. CLAMPING VOLTAGE FOR V82ZA05(P) - V33ZA05(P)
2000
1000
500
200
MAXIMUM PEAK VOLTS (V)
PEAK AMPERES (A)
0.01 0.1 110 100 1000
100
0.0010.0001
V100ZA05(P)
V82ZA05(P)
MAX CLAMPING VOLTAGE
MODEL SIZE 5mm
82 TO 330VN(DC) RATING
TA = -55oC TO 85oC
V330ZA05(P)
V270ZA05(P)
V240ZA05(P)
V220ZA05(P)
V205ZA05(P)
V180ZA05(P)
V150ZA05(P)
V120ZA05(P)
Figure 3 Figure 4
Figure 5
Maximum Clamping Voltage for 7mm Parts
V8ZA1(P) - V68ZA2(P) V82ZA2(P) - V180ZA1(P)
FIGURE 5. CLAMPING VOLTAGE FOR V360ZA05(P) - V750ZA05(P) FIGURE 6. CLAMPING VOLTAGE FOR V8ZA1(P) - V68ZA2(P)
FIGURE 7. CLAMPING VOLTAGE FOR V82ZA2(P) - V180ZA1(P) FIGURE 8. CLAMPING VOLTAGE FOR V8ZA2(P) - V68ZA3(P)
FIGURE 9. CLAMPING VOLTAGE FOR V82ZA4(P) - V180ZA5(P) FIGURE 10.CLAMPING VOLTAGE FOR V18ZA3(P) - V68ZA10(P)
3000
2000
1000
500
MAXIMUM PEAK VOLTS (V)
PEAK AMPERES (A)
0.01 0.1 110100 10000.0010.0001
V750ZA05(P)
V715ZA05(P)
V680ZA05(P)
V620ZA05(P)
V470ZA05(P)
V430ZA05(P)
V390ZA05(P)
V360ZA05(P)
MAX CLAMPING VOLTAGE
MODEL SIZE 5mm
360 TO 750VN(DC) RATING
TA = -55oC TO 85oC
500
400
300
200
100
90
80
70
60
50
40
30
20
10
MAXIMUM PEAK VOLTS (V)
10-3 10-2 10 -1 10 010 110 2103
MAXIMUM CLAMPING VOLTAGE
8 TO 68VN(DC) RATING
TA = -55oC TO 85oC
PEAK AMPERES (A)
V68ZA2(P)
V56ZA2(P)
V47ZA1(P)
V39ZA1(P)
V33ZA1(P)
V27ZA1(P)
V22ZA1(P)
V12ZA1(P)
V18ZA1(P)
V8ZA1(P)
MODEL SIZE 7mm
MAXIMUM PEAK VOLTS (V)
PEAK AMPERES (A)
10-2 10 -1 10 010 110 210 3
10-3
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 7mm
82 TO 180VN(DC) RATING
TA = -55oC TO 85oC
4,000
3,000
2,000
1,000
900
800
700
600
500
400
300
200
100
104
V180ZA1(P)
V150ZA1(P)
V120ZA1(P)
V100ZA3(P)
V82ZA2(P)
500
400
300
200
100
90
80
70
60
50
40
30
20
10
MAXIMUM PEAK VOLTS (V)
10-3 10-2 10 -1 10 010 110 2103
PEAK AMPERES (A)
V68ZA3(P)
V56ZA3(P)
V47ZA3(P)
V39ZA3(P)
V33ZA2(P)
V27ZA2(P)
V22ZA2(P)
V18ZA2(P)
V8ZA2(P)
V12ZA2(P)
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 10mm
8 TO 68VN(DC) RATING
TA = -55oC TO 85oC
MAXIMUM PEAK VOLTS (V)
PEAK AMPERES (A)
10-2 10 -1 10 010 110 210 3
10-3
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 10mm
82 TO 180VN(DC) RATING
TA = -55oC TO 85oC
4,000
3,000
2,000
1,000
900
800
700
600
500
400
300
200
100
104
V180ZA5(P)
V150ZA4(P)
V120ZA4(P)
V100ZA4(P)
V82ZA4(P)
600
500
400
300
200
100
90
80
70
60
50
40
30
20
10-3 10 -2 10 -1 10 010 110 2103
PEAK AMPERES (A)
MAXIMUM PEAK VOLTS (V)
V68ZA10(P)
V56ZA8(P)
V47ZA7(P)
V39ZA6(P)
V33ZA5(P)
V27ZA4(P)
V22ZA3(P)
V18ZA3(P)
MAXIMUM CLAMPING VOLTAGE
18 TO 68VN(DC) RATING
TA = -55oC TO 85oC
MODEL SIZE 14mm
FIGURE 5. CLAMPING VOLTAGE FOR V360ZA05(P) - V750ZA05(P) FIGURE 6. CLAMPING VOLTAGE FOR V8ZA1(P) - V68ZA2(P)
FIGURE 7. CLAMPING VOLTAGE FOR V82ZA2(P) - V180ZA1(P) FIGURE 8. CLAMPING VOLTAGE FOR V8ZA2(P) - V68ZA3(P)
FIGURE 9. CLAMPING VOLTAGE FOR V82ZA4(P) - V180ZA5(P) FIGURE 10.CLAMPING VOLTAGE FOR V18ZA3(P) - V68ZA10(P)
3000
2000
1000
500
MAXIMUM PEAK VOLTS (V)
PEAK AMPERES (A)
0.01 0.1 110100 10000.0010.0001
V750ZA05(P)
V715ZA05(P)
V680ZA05(P)
V620ZA05(P)
V470ZA05(P)
V430ZA05(P)
V390ZA05(P)
V360ZA05(P)
MAX CLAMPING VOLTAGE
MODEL SIZE 5mm
360 TO 750VN(DC) RATING
TA = -55oC TO 85oC
500
400
300
200
100
90
80
70
60
50
40
30
20
10
MAXIMUM PEAK VOLTS (V)
10-3 10-2 10 -1 10 010 110 2103
MAXIMUM CLAMPING VOLTAGE
8 TO 68VN(DC) RATING
TA = -55oC TO 85oC
PEAK AMPERES (A)
V68ZA2(P)
V56ZA2(P)
V47ZA1(P)
V39ZA1(P)
V33ZA1(P)
V27ZA1(P)
V22ZA1(P)
V12ZA1(P)
V18ZA1(P)
V8ZA1(P)
MODEL SIZE 7mm
MAXIMUM PEAK VOLTS (V)
PEAK AMPERES (A)
10-2 10 -1 10 010 110 210 3
10-3
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 7mm
82 TO 180VN(DC) RATING
TA = -55oC TO 85oC
4,000
3,000
2,000
1,000
900
800
700
600
500
400
300
200
100
104
V180ZA1(P)
V150ZA1(P)
V120ZA1(P)
V100ZA3(P)
V82ZA2(P)
500
400
300
200
100
90
80
70
60
50
40
30
20
10
MAXIMUM PEAK VOLTS (V)
10-3 10-2 10 -1 10 010 110 2103
PEAK AMPERES (A)
V68ZA3(P)
V56ZA3(P)
V47ZA3(P)
V39ZA3(P)
V33ZA2(P)
V27ZA2(P)
V22ZA2(P)
V18ZA2(P)
V8ZA2(P)
V12ZA2(P)
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 10mm
8 TO 68VN(DC) RATING
TA = -55oC TO 85oC
MAXIMUM PEAK VOLTS (V)
PEAK AMPERES (A)
10-2 10 -1 10 010 110 210 3
10-3
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 10mm
82 TO 180VN(DC) RATING
TA = -55oC TO 85oC
4,000
3,000
2,000
1,000
900
800
700
600
500
400
300
200
100
104
V180ZA5(P)
V150ZA4(P)
V120ZA4(P)
V100ZA4(P)
V82ZA4(P)
600
500
400
300
200
100
90
80
70
60
50
40
30
20
10-3 10 -2 10 -1 10 010 110 2103
PEAK AMPERES (A)
MAXIMUM PEAK VOLTS (V)
V68ZA10(P)
V56ZA8(P)
V47ZA7(P)
V39ZA6(P)
V33ZA5(P)
V27ZA4(P)
V22ZA3(P)
V18ZA3(P)
MAXIMUM CLAMPING VOLTAGE
18 TO 68VN(DC) RATING
TA = -55oC TO 85oC
MODEL SIZE 14mm
Figure 6 Figure 7
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/12/18
Metal-Oxide Varistors (MOVs)
Radial Lead Varistors > ZA Series
Maximum Clamping Voltage for 10mm Parts
V8ZA2(P) - V68ZA3(P)
Maximum Clamping Voltage for 14mm Parts
V82ZA4(P) - V180ZA5(P)
V18ZA3(P) - V68ZA10(P)
FIGURE 5. CLAMPING VOLTAGE FOR V360ZA05(P) - V750ZA05(P) FIGURE 6. CLAMPING VOLTAGE FOR V8ZA1(P) - V68ZA2(P)
FIGURE 7. CLAMPING VOLTAGE FOR V82ZA2(P) - V180ZA1(P) FIGURE 8. CLAMPING VOLTAGE FOR V8ZA2(P) - V68ZA3(P)
FIGURE 9. CLAMPING VOLTAGE FOR V82ZA4(P) - V180ZA5(P) FIGURE 10.CLAMPING VOLTAGE FOR V18ZA3(P) - V68ZA10(P)
3000
2000
1000
500
MAXIMUM PEAK VOLTS (V)
PEAK AMPERES (A)
0.01 0.1 110100 10000.0010.0001
V750ZA05(P)
V715ZA05(P)
V680ZA05(P)
V620ZA05(P)
V470ZA05(P)
V430ZA05(P)
V390ZA05(P)
V360ZA05(P)
MAX CLAMPING VOLTAGE
MODEL SIZE 5mm
360 TO 750VN(DC) RATING
TA = -55oC TO 85oC
500
400
300
200
100
90
80
70
60
50
40
30
20
10
MAXIMUM PEAK VOLTS (V)
10-3 10-2 10 -1 10 010 110 2103
MAXIMUM CLAMPING VOLTAGE
8 TO 68VN(DC) RATING
TA = -55oC TO 85oC
PEAK AMPERES (A)
V68ZA2(P)
V56ZA2(P)
V47ZA1(P)
V39ZA1(P)
V33ZA1(P)
V27ZA1(P)
V22ZA1(P)
V12ZA1(P)
V18ZA1(P)
V8ZA1(P)
MODEL SIZE 7mm
MAXIMUM PEAK VOLTS (V)
PEAK AMPERES (A)
10-2 10 -1 10 010 110 210 3
10-3
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 7mm
82 TO 180VN(DC) RATING
TA = -55oC TO 85oC
4,000
3,000
2,000
1,000
900
800
700
600
500
400
300
200
100
104
V180ZA1(P)
V150ZA1(P)
V120ZA1(P)
V100ZA3(P)
V82ZA2(P)
500
400
300
200
100
90
80
70
60
50
40
30
20
10
MAXIMUM PEAK VOLTS (V)
10-3 10-2 10 -1 10 010 110 2103
PEAK AMPERES (A)
V68ZA3(P)
V56ZA3(P)
V47ZA3(P)
V39ZA3(P)
V33ZA2(P)
V27ZA2(P)
V22ZA2(P)
V18ZA2(P)
V8ZA2(P)
V12ZA2(P)
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 10mm
8 TO 68VN(DC) RATING
TA = -55oC TO 85oC
MAXIMUM PEAK VOLTS (V)
PEAK AMPERES (A)
10-2 10 -1 10 010 110 210 3
10-3
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 10mm
82 TO 180VN(DC) RATING
TA = -55oC TO 85oC
4,000
3,000
2,000
1,000
900
800
700
600
500
400
300
200
100
104
V180ZA5(P)
V150ZA4(P)
V120ZA4(P)
V100ZA4(P)
V82ZA4(P)
600
500
400
300
200
100
90
80
70
60
50
40
30
20
10-3 10 -2 10 -1 10 010 110 2103
PEAK AMPERES (A)
MAXIMUM PEAK VOLTS (V)
V68ZA10(P)
V56ZA8(P)
V47ZA7(P)
V39ZA6(P)
V33ZA5(P)
V27ZA4(P)
V22ZA3(P)
V18ZA3(P)
MAXIMUM CLAMPING VOLTAGE
18 TO 68VN(DC) RATING
TA = -55oC TO 85oC
MODEL SIZE 14mm
FIGURE 5. CLAMPING VOLTAGE FOR V360ZA05(P) - V750ZA05(P) FIGURE 6. CLAMPING VOLTAGE FOR V8ZA1(P) - V68ZA2(P)
FIGURE 7. CLAMPING VOLTAGE FOR V82ZA2(P) - V180ZA1(P) FIGURE 8. CLAMPING VOLTAGE FOR V8ZA2(P) - V68ZA3(P)
FIGURE 9. CLAMPING VOLTAGE FOR V82ZA4(P) - V180ZA5(P) FIGURE 10.CLAMPING VOLTAGE FOR V18ZA3(P) - V68ZA10(P)
3000
2000
1000
500
MAXIMUM PEAK VOLTS (V)
PEAK AMPERES (A)
0.01 0.1 110100 10000.0010.0001
V750ZA05(P)
V715ZA05(P)
V680ZA05(P)
V620ZA05(P)
V470ZA05(P)
V430ZA05(P)
V390ZA05(P)
V360ZA05(P)
MAX CLAMPING VOLTAGE
MODEL SIZE 5mm
360 TO 750VN(DC) RATING
TA = -55oC TO 85oC
500
400
300
200
100
90
80
70
60
50
40
30
20
10
MAXIMUM PEAK VOLTS (V)
10-3 10-2 10 -1 10 010 110 2103
MAXIMUM CLAMPING VOLTAGE
8 TO 68VN(DC) RATING
TA = -55oC TO 85oC
PEAK AMPERES (A)
V68ZA2(P)
V56ZA2(P)
V47ZA1(P)
V39ZA1(P)
V33ZA1(P)
V27ZA1(P)
V22ZA1(P)
V12ZA1(P)
V18ZA1(P)
V8ZA1(P)
MODEL SIZE 7mm
MAXIMUM PEAK VOLTS (V)
PEAK AMPERES (A)
10-2 10 -1 10 010 110 210 3
10-3
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 7mm
82 TO 180VN(DC) RATING
TA = -55oC TO 85oC
4,000
3,000
2,000
1,000
900
800
700
600
500
400
300
200
100
104
V180ZA1(P)
V150ZA1(P)
V120ZA1(P)
V100ZA3(P)
V82ZA2(P)
500
400
300
200
100
90
80
70
60
50
40
30
20
10
MAXIMUM PEAK VOLTS (V)
10-3 10-2 10 -1 10 010 110 2103
PEAK AMPERES (A)
V68ZA3(P)
V56ZA3(P)
V47ZA3(P)
V39ZA3(P)
V33ZA2(P)
V27ZA2(P)
V22ZA2(P)
V18ZA2(P)
V8ZA2(P)
V12ZA2(P)
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 10mm
8 TO 68VN(DC) RATING
TA = -55oC TO 85oC
MAXIMUM PEAK VOLTS (V)
PEAK AMPERES (A)
10-2 10 -1 10 010 110 210 3
10-3
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 10mm
82 TO 180VN(DC) RATING
TA = -55oC TO 85oC
4,000
3,000
2,000
1,000
900
800
700
600
500
400
300
200
100
104
V180ZA5(P)
V150ZA4(P)
V120ZA4(P)
V100ZA4(P)
V82ZA4(P)
600
500
400
300
200
100
90
80
70
60
50
40
30
20
10-3 10 -2 10 -1 10 010 110 2103
PEAK AMPERES (A)
MAXIMUM PEAK VOLTS (V)
V68ZA10(P)
V56ZA8(P)
V47ZA7(P)
V39ZA6(P)
V33ZA5(P)
V27ZA4(P)
V22ZA3(P)
V18ZA3(P)
MAXIMUM CLAMPING VOLTAGE
18 TO 68VN(DC) RATING
TA = -55oC TO 85oC
MODEL SIZE 14mm
FIGURE 5. CLAMPING VOLTAGE FOR V360ZA05(P) - V750ZA05(P) FIGURE 6. CLAMPING VOLTAGE FOR V8ZA1(P) - V68ZA2(P)
FIGURE 7. CLAMPING VOLTAGE FOR V82ZA2(P) - V180ZA1(P) FIGURE 8. CLAMPING VOLTAGE FOR V8ZA2(P) - V68ZA3(P)
FIGURE 9. CLAMPING VOLTAGE FOR V82ZA4(P) - V180ZA5(P) FIGURE 10.CLAMPING VOLTAGE FOR V18ZA3(P) - V68ZA10(P)
3000
2000
1000
500
MAXIMUM PEAK VOLTS (V)
PEAK AMPERES (A)
0.01 0.1 110100 10000.0010.0001
V750ZA05(P)
V715ZA05(P)
V680ZA05(P)
V620ZA05(P)
V470ZA05(P)
V430ZA05(P)
V390ZA05(P)
V360ZA05(P)
MAX CLAMPING VOLTAGE
MODEL SIZE 5mm
360 TO 750VN(DC) RATING
TA = -55oC TO 85oC
500
400
300
200
100
90
80
70
60
50
40
30
20
10
MAXIMUM PEAK VOLTS (V)
10-3 10-2 10 -1 10 010 110 2103
MAXIMUM CLAMPING VOLTAGE
8 TO 68VN(DC) RATING
TA = -55oC TO 85oC
PEAK AMPERES (A)
V68ZA2(P)
V56ZA2(P)
V47ZA1(P)
V39ZA1(P)
V33ZA1(P)
V27ZA1(P)
V22ZA1(P)
V12ZA1(P)
V18ZA1(P)
V8ZA1(P)
MODEL SIZE 7mm
MAXIMUM PEAK VOLTS (V)
PEAK AMPERES (A)
10-2 10 -1 10 010 110 210 3
10-3
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 7mm
82 TO 180VN(DC) RATING
TA = -55oC TO 85oC
4,000
3,000
2,000
1,000
900
800
700
600
500
400
300
200
100
104
V180ZA1(P)
V150ZA1(P)
V120ZA1(P)
V100ZA3(P)
V82ZA2(P)
500
400
300
200
100
90
80
70
60
50
40
30
20
10
MAXIMUM PEAK VOLTS (V)
10-3 10-2 10 -1 10 010 110 2103
PEAK AMPERES (A)
V68ZA3(P)
V56ZA3(P)
V47ZA3(P)
V39ZA3(P)
V33ZA2(P)
V27ZA2(P)
V22ZA2(P)
V18ZA2(P)
V8ZA2(P)
V12ZA2(P)
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 10mm
8 TO 68VN(DC) RATING
TA = -55oC TO 85oC
MAXIMUM PEAK VOLTS (V)
PEAK AMPERES (A)
10-2 10 -1 10 010 110 210 3
10-3
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 10mm
82 TO 180VN(DC) RATING
TA = -55oC TO 85oC
4,000
3,000
2,000
1,000
900
800
700
600
500
400
300
200
100
104
V180ZA5(P)
V150ZA4(P)
V120ZA4(P)
V100ZA4(P)
V82ZA4(P)
600
500
400
300
200
100
90
80
70
60
50
40
30
20
10-3 10 -2 10 -1 10 010 110 2103
PEAK AMPERES (A)
MAXIMUM PEAK VOLTS (V)
V68ZA10(P)
V56ZA8(P)
V47ZA7(P)
V39ZA6(P)
V33ZA5(P)
V27ZA4(P)
V22ZA3(P)
V18ZA3(P)
MAXIMUM CLAMPING VOLTAGE
18 TO 68VN(DC) RATING
TA = -55oC TO 85oC
MODEL SIZE 14mm
V82ZA12(P) - V180ZA10(P)
FIGURE 11. CLAMPING VOLTAGE FOR V82ZA12(P) - V180ZA10(P) FIGURE 12. CLAMPING VOLTAGE FOR V18ZA40(P) - V36ZA80(P)
FIGURE 13. CLAMPING VOLTAGE FOR V39ZA20(P) - V180ZA20(P)
Transient V-I Characteristic Curves
(Continued)
PEAK AMPERES (A)
10-2 10 -1 10 010 110 2103
10-3
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 14mm
82 TO 180VN(DC) RATING
TA = -55oC TO 85oC
4,000
3,000
2,000
1,000
900
800
700
600
500
400
300
200
100
104
V180ZA10(P)
V150ZA8(P)
V120ZA6(P)
V100ZA15(P)
V82ZA12(P)
300
200
100
90
80
70
60
50
40
30
20
MAXIMUM PEAK VOLTS (V)
MAXIMUM PEAK VOLTS (V)
PEAK AMPERES (A)
10-2 10 -1 10 010 110 2103
10-3 10 4
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 20mm
18 TO 36VN(DC) RATING
TA = -55oC TO 85oC
V36ZA20(P) V36ZA80(P)
V33ZA20(P) V33ZA70(P)
V27ZA60(P) V27ZA60(P)
V24ZA50(P) V24ZA50(P)
V18ZA40P(P) V18ZA40P(P)
10-3 10 -2 10 -1 10 010 1102104
103
1,000
500
300
200
30
PEAK AMPERES (A)
MAXIMUM PEAK VOLTS (V)
V56ZA20(P)
V47ZA20(P)
V39ZA20(P)
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 20mm
TA = -55oC TO 85oC
39 TO 180VM(AC ) RATING V180ZA20(P)
V150ZA20(P)
V120ZA20(P)
100
50
V68ZA20(P)
Pulse Rating Curves
FIGURE 14. SURGE CURRENT RATING CURVES FOR V8ZA05
(P)
FIGURE 15. SURGE CURRENT RATING CURVES FOR
V12ZA05(P) - V68ZA05(P)
50
20
10
5
2
1
0.5
0.2
0.1
SURGE CURRENT (A)
20 100 1,000 10,000
IMPULSE DURATION (μs)
1
10
102
2
103
INDEFINITE
104
105
106
MODEL SIZE 5mm
V8ZA05(P)
100
50
20
10
2
1
0.5
0.2
0.1
SURGE CURRENT (A)
20 100 1,000 10,000
INDEFINITE
104
105
106
MODEL SIZE 5mm
V12ZA05(P) - V68ZA05(P)
115
102
2
103
IMPULSE DURATION (μs)
V82ZA20(P)
V100ZA20(P)
Figure 8 Figure 9
Figure 10 Figure 11
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/12/18
Metal-Oxide Varistors (MOVs)
Radial Lead Varistors > ZA Series
Maximum Clamping Voltage for 20mm Parts
V18ZA20(P) - V36ZA80(P)
Repetitive Surge Capability for 5mm Parts
V39ZA20(P) - V180ZA20(P)
V8ZA05P - V12ZA05P V18ZA05(P) - V68ZA05(P)
V82ZA05(P) - V750ZA05(P)
FIGURE 11. CLAMPING VOLTAGE FOR V82ZA12(P) - V180ZA10(P) FIGURE 12. CLAMPING VOLTAGE FOR V18ZA40(P) - V36ZA80(P)
FIGURE 13. CLAMPING VOLTAGE FOR V39ZA20(P) - V180ZA20(P)
Transient V-I Characteristic Curves
(Continued)
PEAK AMPERES (A)
10-2 10 -1 10 010 110 2103
10-3
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 14mm
82 TO 180VN(DC) RATING
TA = -55oC TO 85oC
4,000
3,000
2,000
1,000
900
800
700
600
500
400
300
200
100
104
V180ZA10(P)
V150ZA8(P)
V120ZA6(P)
V100ZA15(P)
V82ZA12(P)
300
200
100
90
80
70
60
50
40
30
20
MAXIMUM PEAK VOLTS (V)
MAXIMUM PEAK VOLTS (V)
PEAK AMPERES (A)
10-2 10 -1 10 010 110 2103
10-3 10 4
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 20mm
18 TO 36VN(DC) RATING
TA = -55oC TO 85oC
V36ZA20(P) V36ZA80(P)
V33ZA20(P) V33ZA70(P)
V27ZA60(P) V27ZA60(P)
V24ZA50(P) V24ZA50(P)
V18ZA40P(P) V18ZA40P(P)
10-3 10 -2 10 -1 10 010 1102104
103
1,000
500
300
200
30
PEAK AMPERES (A)
MAXIMUM PEAK VOLTS (V)
V56ZA20(P)
V47ZA20(P)
V39ZA20(P)
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 20mm
TA = -55oC TO 85oC
39 TO 180VM(AC ) RATING V180ZA20(P)
V150ZA20(P)
V120ZA20(P)
100
50
V68ZA20(P)
Pulse Rating Curves
FIGURE 14. SURGE CURRENT RATING CURVES FOR V8ZA05
(P)
FIGURE 15. SURGE CURRENT RATING CURVES FOR
V12ZA05(P) - V68ZA05(P)
50
20
10
5
2
1
0.5
0.2
0.1
SURGE CURRENT (A)
20 100 1,000 10,000
IMPULSE DURATION (μs)
1
10
102
2
103
INDEFINITE
104
105
106
MODEL SIZE 5mm
V8ZA05(P)
100
50
20
10
2
1
0.5
0.2
0.1
SURGE CURRENT (A)
20 100 1,000 10,000
INDEFINITE
104
105
106
MODEL SIZE 5mm
V12ZA05(P) - V68ZA05(P)
115
102
2
103
IMPULSE DURATION (μs)
V82ZA20(P)
V100ZA20(P)
FIGURE 11. CLAMPING VOLTAGE FOR V82ZA12(P) - V180ZA10(P) FIGURE 12. CLAMPING VOLTAGE FOR V18ZA40(P) - V36ZA80(P)
FIGURE 13. CLAMPING VOLTAGE FOR V39ZA20(P) - V180ZA20(P)
Transient V-I Characteristic Curves
(Continued)
PEAK AMPERES (A)
10-2 10 -1 10 010 110 2103
10-3
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 14mm
82 TO 180VN(DC) RATING
TA = -55oC TO 85oC
4,000
3,000
2,000
1,000
900
800
700
600
500
400
300
200
100
104
V180ZA10(P)
V150ZA8(P)
V120ZA6(P)
V100ZA15(P)
V82ZA12(P)
300
200
100
90
80
70
60
50
40
30
20
MAXIMUM PEAK VOLTS (V)
MAXIMUM PEAK VOLTS (V)
PEAK AMPERES (A)
10-2 10 -1 10 010 110 2103
10-3 10 4
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 20mm
18 TO 36VN(DC) RATING
TA = -55oC TO 85oC
V36ZA20(P) V36ZA80(P)
V33ZA20(P) V33ZA70(P)
V27ZA60(P) V27ZA60(P)
V24ZA50(P) V24ZA50(P)
V18ZA40P(P) V18ZA40P(P)
10-3 10 -2 10 -1 10 010 1102104
103
1,000
500
300
200
30
PEAK AMPERES (A)
MAXIMUM PEAK VOLTS (V)
V56ZA20(P)
V47ZA20(P)
V39ZA20(P)
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 20mm
TA = -55oC TO 85oC
39 TO 180VM(AC ) RATING V180ZA20(P)
V150ZA20(P)
V120ZA20(P)
100
50
V68ZA20(P)
Pulse Rating Curves
FIGURE 14. SURGE CURRENT RATING CURVES FOR V8ZA05
(P)
FIGURE 15. SURGE CURRENT RATING CURVES FOR
V12ZA05(P) - V68ZA05(P)
50
20
10
5
2
1
0.5
0.2
0.1
SURGE CURRENT (A)
20 100 1,000 10,000
IMPULSE DURATION (μs)
1
10
102
2
103
INDEFINITE
104
105
106
MODEL SIZE 5mm
V8ZA05(P)
100
50
20
10
2
1
0.5
0.2
0.1
SURGE CURRENT (A)
20 100 1,000 10,000
INDEFINITE
104
105
106
MODEL SIZE 5mm
V12ZA05(P) - V68ZA05(P)
115
102
2
103
IMPULSE DURATION (μs)
V82ZA20(P)
V100ZA20(P)
FIGURE 11. CLAMPING VOLTAGE FOR V82ZA12(P) - V180ZA10(P) FIGURE 12. CLAMPING VOLTAGE FOR V18ZA40(P) - V36ZA80(P)
FIGURE 13. CLAMPING VOLTAGE FOR V39ZA20(P) - V180ZA20(P)
Transient V-I Characteristic Curves
(Continued)
PEAK AMPERES (A)
10-2 10 -1 10 010 110 2103
10-3
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 14mm
82 TO 180VN(DC) RATING
TA = -55oC TO 85oC
4,000
3,000
2,000
1,000
900
800
700
600
500
400
300
200
100
104
V180ZA10(P)
V150ZA8(P)
V120ZA6(P)
V100ZA15(P)
V82ZA12(P)
300
200
100
90
80
70
60
50
40
30
20
MAXIMUM PEAK VOLTS (V)
MAXIMUM PEAK VOLTS (V)
PEAK AMPERES (A)
10-2 10 -1 10 010 110 2103
10-3 10 4
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 20mm
18 TO 36VN(DC) RATING
TA = -55oC TO 85oC
V36ZA20(P) V36ZA80(P)
V33ZA20(P) V33ZA70(P)
V27ZA60(P) V27ZA60(P)
V24ZA50(P) V24ZA50(P)
V18ZA40P(P) V18ZA40P(P)
10-3 10 -2 10 -1 10 010 1102104
103
1,000
500
300
200
30
PEAK AMPERES (A)
MAXIMUM PEAK VOLTS (V)
V56ZA20(P)
V47ZA20(P)
V39ZA20(P)
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 20mm
TA = -55oC TO 85oC
39 TO 180VM(AC ) RATING V180ZA20(P)
V150ZA20(P)
V120ZA20(P)
100
50
V68ZA20(P)
Pulse Rating Curves
FIGURE 14. SURGE CURRENT RATING CURVES FOR V8ZA05
(P)
FIGURE 15. SURGE CURRENT RATING CURVES FOR
V12ZA05(P) - V68ZA05(P)
50
20
10
5
2
1
0.5
0.2
0.1
SURGE CURRENT (A)
20 100 1,000 10,000
IMPULSE DURATION (μs)
1
10
102
2
103
INDEFINITE
104
105
106
MODEL SIZE 5mm
V8ZA05(P)
100
50
20
10
2
1
0.5
0.2
0.1
SURGE CURRENT (A)
20 100 1,000 10,000
INDEFINITE
104
105
106
MODEL SIZE 5mm
V12ZA05(P) - V68ZA05(P)
115
102
2
103
IMPULSE DURATION (μs)
V82ZA20(P)
V100ZA20(P)
FIGURE 16. SURGE CURRENT RATING CURVES FOR
V82ZA05(P) - V750ZA05(P)
FIGURE 17. SURGE CURRENT RATING CURVES FOR
V8ZA1(P) - V12ZA1(P)
FIGURE 18. SURGE CURRENT RATING CURVES FOR
V18ZA1(P) - V68ZA2(P)
FIGURE 19. SURGE CURRENT RATING CURVES FOR
V82ZA2(P) - V180ZA1(P)
FIGURE 20. SURGE CURRENT RATING CURVES FOR
V8ZA2(P) - V127ZA2(P)
FIGURE 21. SURGE CURRENT RATING CURVES FOR
V18ZA2(P) - V68ZA3(P)
50
20
10
5
2
1
0.5
0.2
SURGE CURRENT (A)
20 100 1,000 10,000
IMPULSE DURATION ( µs)
1
15
102
2
103
INDEFINITE
104
105
106
MODEL SIZE 5mm
V82ZA05(P) - V750ZA05(P)
500
200
100
20 100 1,000 10,000
IMPULSE DURATION ( µs)
SURGE CURRENT (A)
1
10
102
2
103
INDEFINITE
104
105
106
200
100
50
20
10
5
2
1
0.5
0.2
MODEL SIZE 7mm
V8ZA1(P) - V12ZA1(P)
20 100 1,000 10,000
IMPULSE DURATION ( µs)
SURGE CURRENT (A)
1
10
102
2
103
INDEFINITE
500
200
100
50
20
10
2
1
0.5
0.2
104
105
106
5
MODEL SIZE 7mm
V18ZA1(P) - V68ZA2(P)
2,000
1,000
200
100
50
20
10
5
1
2
500
20 100 1,000 10,000
IMPULSE DURATION ( µs)
SURGE CURRENT (A)
1
2
10
102
104
105
106
103
INDEFINITE
MODEL SIZE 7mm
V82ZA2(P) - V180ZA1(P)
20 100 1,000 10,000
IMPULSE DURATION ( µs)
SURGE CURRENT (A)
1
10
102
2
103
INDEFINITE
500
200
100
50
20
10
2
1
0.5
0.2
104
105
106
5
MODEL SIZE 10mm
V8ZA2(P) - V12ZA2(P)
1,000
500
100
50
20
10
5
1
2
200
20
SURGE CURRENT (A)
1
2
105
106
104
INDEFINITE
MODEL SIZE 10mm
V18ZA2(P) - V68ZA3(P)
100 1,000 10,000
IMPULSE DURATION ( µs)
102
103
Figure 11 Figure 12
Figure 13 Figure 14
Figure 15
Note: Repetitive surge capability is qualified and tested based on 8/20us current waveform
(not combination waveform) and UL1449 40.7.3 (Edition 4) test condition.
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/12/18
Metal-Oxide Varistors (MOVs)
Radial Lead Varistors > ZA Series
Repetitive Surge Capability for 7mm Parts
V8ZA1(P) - V12ZA1(P)
V18ZA1(P) - V68ZA2(P)
FIGURE 16. SURGE CURRENT RATING CURVES FOR
V82ZA05(P) - V750ZA05(P)
FIGURE 17. SURGE CURRENT RATING CURVES FOR
V8ZA1(P) - V12ZA1(P)
FIGURE 18. SURGE CURRENT RATING CURVES FOR
V18ZA1(P) - V68ZA2(P)
FIGURE 19. SURGE CURRENT RATING CURVES FOR
V82ZA2(P) - V180ZA1(P)
FIGURE 20. SURGE CURRENT RATING CURVES FOR
V8ZA2(P) - V127ZA2(P)
FIGURE 21. SURGE CURRENT RATING CURVES FOR
V18ZA2(P) - V68ZA3(P)
50
20
10
5
2
1
0.5
0.2
SURGE CURRENT (A)
20 100 1,000 10,000
IMPULSE DURATION (µs)
1
10
10
2
2
10
3
INDEFINITE
10
4
10
5
10
6
MODEL SIZE 5mm
V82ZA05(P) - V750ZA05(P)
500
200
100
20 100 1,000 10,000
IMPULSE DURATION (µs)
SURGE CURRENT (A)
1
10
10
2
2
10
3
INDEFINITE
10
4
10
5
10
6
200
100
50
20
10
5
2
1
0.5
0.2
MODEL SIZE 7mm
V8ZA1(P) - V12ZA1(P)
20 100 1,000 10,000
IMPULSE DURATION (µs)
SURGE CURRENT (A)
1
15
10
2
2
10
3
INDEFINITE
500
200
100
50
20
10
2
1
0.5
0.2
10
4
10
5
10
6
5
MODEL SIZE 7mm
V18ZA1(P) - V68ZA2(P)
2,000
1,000
200
100
50
20
10
5
1
2
500
20 100 1,000 10,000
IMPULSE DURATION (µs)
SURGE CURRENT (A)
1
2
15
10
2
10
4
10
5
10
6
10
3
INDEFINITE
MODEL SIZE 7mm
V82ZA2(P) - V180ZA1(P)
20 100 1,000 10,000
IMPULSE DURATION (µs)
SURGE CURRENT (A)
1
10
10
2
2
10
3
INDEFINITE
500
200
100
50
20
10
2
1
0.5
0.2
10
4
10
5
10
6
5
MODEL SIZE 10mm
V8ZA2(P) - V12ZA2(P)
1,000
500
100
50
20
10
5
1
2
200
20
SURGE CURRENT (A)
1
2
10
5
10
6
10
4
INDEFINITE
MODEL SIZE 10mm
V18ZA2(P) - V68ZA3(P)
100 1,000 10,000
IMPULSE DURATION (µs)
10
3
10
2
FIGURE 16. SURGE CURRENT RATING CURVES FOR
V82ZA05(P) - V750ZA05(P)
FIGURE 17. SURGE CURRENT RATING CURVES FOR
V8ZA1(P) - V12ZA1(P)
FIGURE 18. SURGE CURRENT RATING CURVES FOR
V18ZA1(P) - V68ZA2(P)
FIGURE 19. SURGE CURRENT RATING CURVES FOR
V82ZA2(P) - V180ZA1(P)
FIGURE 20. SURGE CURRENT RATING CURVES FOR
V8ZA2(P) - V127ZA2(P)
FIGURE 21. SURGE CURRENT RATING CURVES FOR
V18ZA2(P) - V68ZA3(P)
50
20
10
5
2
1
0.5
0.2
SURGE CURRENT (A)
20 100 1,000 10,000
IMPULSE DURATION (µs)
1
10
10
2
2
10
3
INDEFINITE
10
4
10
5
10
6
MODEL SIZE 5mm
V82ZA05(P) - V750ZA05(P)
500
200
100
20 100 1,000 10,000
IMPULSE DURATION (µs)
SURGE CURRENT (A)
1
10
10
2
2
10
3
INDEFINITE
10
4
10
5
10
6
200
100
50
20
10
5
2
1
0.5
0.2
MODEL SIZE 7mm
V8ZA1(P) - V12ZA1(P)
20 100 1,000 10,000
IMPULSE DURATION (µs)
SURGE CURRENT (A)
1
15
10
2
2
10
3
INDEFINITE
500
200
100
50
20
10
2
1
0.5
0.2
10
4
10
5
10
6
5
MODEL SIZE 7mm
V18ZA1(P) - V68ZA2(P)
2,000
1,000
200
100
50
20
10
5
1
2
500
20 100 1,000 10,000
IMPULSE DURATION (µs)
SURGE CURRENT (A)
1
2
15
10
2
10
4
10
5
10
6
10
3
INDEFINITE
MODEL SIZE 7mm
V82ZA2(P) - V180ZA1(P)
20 100 1,000 10,000
IMPULSE DURATION (µs)
SURGE CURRENT (A)
1
10
10
2
2
10
3
INDEFINITE
500
200
100
50
20
10
2
1
0.5
0.2
10
4
10
5
10
6
5
MODEL SIZE 10mm
V8ZA2(P) - V12ZA2(P)
1,000
500
100
50
20
10
5
1
2
200
20
SURGE CURRENT (A)
1
2
10
5
10
6
10
4
INDEFINITE
MODEL SIZE 10mm
V18ZA2(P) - V68ZA3(P)
100 1,000 10,000
IMPULSE DURATION (µs)
10
3
10
2
Repetitive Surge Capability for 10mm Parts
V82ZA2(P) - V180ZA1(P)
V8ZA2(P) - V12ZA2(P)
V18ZA2(P) - V68ZA3(P)
V82ZA4(P) - V180ZA5(P)
FIGURE 16. SURGE CURRENT RATING CURVES FOR
V82ZA05(P) - V750ZA05(P)
FIGURE 17. SURGE CURRENT RATING CURVES FOR
V8ZA1(P) - V12ZA1(P)
FIGURE 18. SURGE CURRENT RATING CURVES FOR
V18ZA1(P) - V68ZA2(P)
FIGURE 19. SURGE CURRENT RATING CURVES FOR
V82ZA2(P) - V180ZA1(P)
FIGURE 20. SURGE CURRENT RATING CURVES FOR
V8ZA2(P) - V127ZA2(P)
FIGURE 21. SURGE CURRENT RATING CURVES FOR
V18ZA2(P) - V68ZA3(P)
50
20
10
5
2
1
0.5
0.2
SURGE CURRENT (A)
20 100 1,000 10,000
IMPULSE DURATION (µs)
1
10
10
2
2
10
3
INDEFINITE
10
4
10
5
10
6
MODEL SIZE 5mm
V82ZA05(P) - V750ZA05(P)
500
200
100
20 100 1,000 10,000
IMPULSE DURATION (µs)
SURGE CURRENT (A)
1
10
10
2
2
10
3
INDEFINITE
10
4
10
5
10
6
200
100
50
20
10
5
2
1
0.5
0.2
MODEL SIZE 7mm
V8ZA1(P) - V12ZA1(P)
20 100 1,000 10,000
IMPULSE DURATION (µs)
SURGE CURRENT (A)
1
15
10
2
2
10
3
INDEFINITE
500
200
100
50
20
10
2
1
0.5
0.2
10
4
10
5
10
6
5
MODEL SIZE 7mm
V18ZA1(P) - V68ZA2(P)
2,000
1,000
200
100
50
20
10
5
1
2
500
20 100 1,000 10,000
IMPULSE DURATION (µs)
SURGE CURRENT (A)
1
2
15
10
2
10
4
10
5
10
6
10
3
INDEFINITE
MODEL SIZE 7mm
V82ZA2(P) - V180ZA1(P)
20 100 1,000 10,000
IMPULSE DURATION (µs)
SURGE CURRENT (A)
1
10
10
2
2
10
3
INDEFINITE
500
200
100
50
20
10
2
1
0.5
0.2
10
4
10
5
10
6
5
MODEL SIZE 10mm
V8ZA2(P) - V12ZA2(P)
1,000
500
100
50
20
10
5
1
2
200
20
SURGE CURRENT (A)
1
2
10
5
10
6
10
4
INDEFINITE
MODEL SIZE 10mm
V18ZA2(P) - V68ZA3(P)
100 1,000 10,000
IMPULSE DURATION (µs)
10
3
10
2
FIGURE 16. SURGE CURRENT RATING CURVES FOR
V82ZA05(P) - V750ZA05(P)
FIGURE 17. SURGE CURRENT RATING CURVES FOR
V8ZA1(P) - V12ZA1(P)
FIGURE 18. SURGE CURRENT RATING CURVES FOR
V18ZA1(P) - V68ZA2(P)
FIGURE 19. SURGE CURRENT RATING CURVES FOR
V82ZA2(P) - V180ZA1(P)
FIGURE 20. SURGE CURRENT RATING CURVES FOR
V8ZA2(P) - V127ZA2(P)
FIGURE 21. SURGE CURRENT RATING CURVES FOR
V18ZA2(P) - V68ZA3(P)
50
20
10
5
2
1
0.5
0.2
SURGE CURRENT (A)
20 100 1,000 10,000
IMPULSE DURATION (µs)
1
10
10
2
2
10
3
INDEFINITE
10
4
10
5
10
6
MODEL SIZE 5mm
V82ZA05(P) - V750ZA05(P)
500
200
100
20 100 1,000 10,000
IMPULSE DURATION (µs)
SURGE CURRENT (A)
1
10
10
2
2
10
3
INDEFINITE
10
4
10
5
10
6
200
100
50
20
10
5
2
1
0.5
0.2
MODEL SIZE 7mm
V8ZA1(P) - V12ZA1(P)
20 100 1,000 10,000
IMPULSE DURATION (µs)
SURGE CURRENT (A)
1
15
10
2
2
10
3
INDEFINITE
500
200
100
50
20
10
2
1
0.5
0.2
10
4
10
5
10
6
5
MODEL SIZE 7mm
V18ZA1(P) - V68ZA2(P)
2,000
1,000
200
100
50
20
10
5
1
2
500
20 100 1,000 10,000
IMPULSE DURATION (µs)
SURGE CURRENT (A)
1
2
15
10
2
10
4
10
5
10
6
10
3
INDEFINITE
MODEL SIZE 7mm
V82ZA2(P) - V180ZA1(P)
20 100 1,000 10,000
IMPULSE DURATION (µs)
SURGE CURRENT (A)
1
10
10
2
2
10
3
INDEFINITE
500
200
100
50
20
10
2
1
0.5
0.2
10
4
10
5
10
6
5
MODEL SIZE 10mm
V8ZA2(P) - V12ZA2(P)
1,000
500
100
50
20
10
5
1
2
200
20
SURGE CURRENT (A)
1
2
10
5
10
6
10
4
INDEFINITE
MODEL SIZE 10mm
V18ZA2(P) - V68ZA3(P)
100 1,000 10,000
IMPULSE DURATION (µs)
10
3
10
2
FIGURE 16. SURGE CURRENT RATING CURVES FOR
V82ZA05(P) - V750ZA05(P)
FIGURE 17. SURGE CURRENT RATING CURVES FOR
V8ZA1(P) - V12ZA1(P)
FIGURE 18. SURGE CURRENT RATING CURVES FOR
V18ZA1(P) - V68ZA2(P)
FIGURE 19. SURGE CURRENT RATING CURVES FOR
V82ZA2(P) - V180ZA1(P)
FIGURE 20. SURGE CURRENT RATING CURVES FOR
V8ZA2(P) - V127ZA2(P)
FIGURE 21. SURGE CURRENT RATING CURVES FOR
V18ZA2(P) - V68ZA3(P)
50
20
10
5
2
1
0.5
0.2
SURGE CURRENT (A)
20 100 1,000 10,000
IMPULSE DURATION (µs)
1
10
10
2
2
10
3
INDEFINITE
10
4
10
5
10
6
MODEL SIZE 5mm
V82ZA05(P) - V750ZA05(P)
500
200
100
20 100 1,000 10,000
IMPULSE DURATION (µs)
SURGE CURRENT (A)
1
10
10
2
2
10
3
INDEFINITE
10
4
10
5
10
6
200
100
50
20
10
5
2
1
0.5
0.2
MODEL SIZE 7mm
V8ZA1(P) - V12ZA1(P)
20 100 1,000 10,000
IMPULSE DURATION (µs)
SURGE CURRENT (A)
1
15
10
2
2
10
3
INDEFINITE
500
200
100
50
20
10
2
1
0.5
0.2
10
4
10
5
10
6
5
MODEL SIZE 7mm
V18ZA1(P) - V68ZA2(P)
2,000
1,000
200
100
50
20
10
5
1
2
500
20 100 1,000 10,000
IMPULSE DURATION (µs)
SURGE CURRENT (A)
1
2
15
10
2
10
4
10
5
10
6
10
3
INDEFINITE
MODEL SIZE 7mm
V82ZA2(P) - V180ZA1(P)
20 100 1,000 10,000
IMPULSE DURATION (µs)
SURGE CURRENT (A)
1
10
10
2
2
10
3
INDEFINITE
500
200
100
50
20
10
2
1
0.5
0.2
10
4
10
5
10
6
5
MODEL SIZE 10mm
V8ZA2(P) - V12ZA2(P)
1,000
500
100
50
20
10
5
1
2
200
20
SURGE CURRENT (A)
1
2
10
5
10
6
10
4
INDEFINITE
MODEL SIZE 10mm
V18ZA2(P) - V68ZA3(P)
100 1,000 10,000
IMPULSE DURATION (µs)
10
3
10
2
FIGURE 22. SURGE CURRENT RATING CURVES FOR
V82ZA4(P) - V180ZA5(P)
V180ZA5
FIGURE 23. SURGE CURRENT RATING CURVES FOR
V18ZA3(P) - V68ZA10(P)
FIGURE 24. SURGE CURRENT RATING CURVES FOR
V82ZA12(P) - V180ZA10(P)
FIGURE 25. SURGE CURRENT RATING CURRENT FOR
V18ZA40(P) - V68ZA20(P)
FIGURE 26. SURGE CURRENT RATING CURVES FOR V120ZA20(P) - V180ZA20(P)
5,000
2,000
1,000
500
200
100
50
20
10
5
2
20 100 1,000 10,000
IMPULSE DURATION ( µs)
SURGE CURRENT (A)
1
15
10
2
2
10
3
INDEFINITE
10
4
10
5
10
6
MODEL SIZE 10mm
V82ZA4(P) - V180ZA5(P)
200
100
50
20
10
5
1
2
20 100 1,000 10,000
IMPULSE DURATION ( µs)
SURGE CURRENT (A)
1
2
15
10
2
10
4
10
5
10
6
10
3
INDEFINITE
1,000
500
MODEL SIZE 14mm
V18ZA3(P) - V68ZA10(P)
5,000
2,000
200
100
50
20
10
5
2
500
20 100 1,000 10,000
IMPULSE DURATION ( µs)
SURGE CURRENT (A)
1
2
15
10
4
10
5
10
6
10
3
INDEFINITE
1,000 10
2
MODEL SIZE 14mm
V82ZA12(P) - V180ZA10(P)
2,000
200
100
50
20
10
5
2
500
20 100 1,000 10,000
IMPULSE DURATION ( µs)
SURGE CURRENT (A)
1
2
10
1,000
10
2
10
3
10
4
10
5
10
6
INDEFINITE
MODEL SIZE 20mm
V18ZA40(P) - V68ZA20(P)
10,0001,000100
20
IMPULSE DURATION ( µs)
SURGE CURRENT (A)
5,000
10,000
2,000
500
100
20
10
2
1,000
200
50
1
5
1
2
10
10
2
10
3
10
4
10
5
10
6
INDEFINITE
MODEL SIZE 20mm
V120ZA20(P) - V180ZA20(P)
Figure 15 Figure 18
Figure 16 Figure 19
Figure 17 Figure 20
Note: Repetitive surge capability is qualified and tested based on 8/20us current waveform (not combination waveform) and UL1449 40.7.3 (Edition 4) test condition.
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/12/18
Metal-Oxide Varistors (MOVs)
Radial Lead Varistors > ZA Series
Repetitive Surge Capability for 14mm Parts
V18ZA3(P) - V68ZA10(P) V82ZA12(P) - V180ZA10(P)
FIGURE 22. SURGE CURRENT RATING CURVES FOR
V82ZA4(P) - V180ZA5(P)
V180ZA5
FIGURE 23. SURGE CURRENT RATING CURVES FOR
V18ZA3(P) - V68ZA10(P)
FIGURE 24. SURGE CURRENT RATING CURVES FOR
V82ZA12(P) - V180ZA10(P)
FIGURE 25. SURGE CURRENT RATING CURRENT FOR
V18ZA40(P) - V68ZA20(P)
FIGURE 26. SURGE CURRENT RATING CURVES FOR V120ZA20(P) - V180ZA20(P)
5,000
2,000
1,000
500
200
100
50
20
10
5
2
20 100 1,000 10,000
IMPULSE DURATION ( µs)
SURGE CURRENT (A)
1
15
10
2
2
10
3
INDEFINITE
10
4
10
5
10
6
MODEL SIZE 10mm
V82ZA4(P) - V180ZA5(P)
200
100
50
20
10
5
1
2
20 100 1,000 10,000
IMPULSE DURATION ( µs)
SURGE CURRENT (A)
1
2
15
10
2
10
4
10
5
10
6
10
3
INDEFINITE
1,000
500
MODEL SIZE 14mm
V18ZA3(P) - V68ZA10(P)
5,000
2,000
200
100
50
20
10
5
2
500
20 100 1,000 10,000
IMPULSE DURATION ( µs)
SURGE CURRENT (A)
1
2
15
10
4
10
5
10
6
10
3
INDEFINITE
1,000 10
2
MODEL SIZE 14mm
V82ZA12(P) - V180ZA10(P)
2,000
200
100
50
20
10
5
2
500
20 100 1,000 10,000
IMPULSE DURATION ( µs)
SURGE CURRENT (A)
1
2
10
1,000
10
2
10
3
10
4
10
5
10
6
INDEFINITE
MODEL SIZE 20mm
V18ZA40(P) - V68ZA20(P)
10,0001,000100
20
IMPULSE DURATION ( µs)
SURGE CURRENT (A)
5,000
10,000
2,000
500
100
20
10
2
1,000
200
50
1
5
1
2
10
10
2
10
3
10
4
10
5
10
6
INDEFINITE
MODEL SIZE 20mm
V120ZA20(P) - V180ZA20(P)
FIGURE 24. SURGE CURRENT RATING CURVES FOR
V82ZA12(P) - V180ZA10(P)
FIGURE 25. SURGE CURRENT RATING CURRENT FOR
V18ZA40(P) - V68ZA20(P)
FIGURE 26. SURGE CURRENT RATING CURVES FOR V120ZA20(P) - V180ZA20(P)
5,000
2,000
200
100
50
20
10
5
2
500
20 100 1,000 10,000
IMPULSE DURATION ( µs)
SURGE CURRENT (A)
1
2
15
10
4
10
5
10
6
10
3
INDEFINITE
1,000 10
2
MODEL SIZE 14mm
V82ZA12(P) - V180ZA10(P)
2,000
200
100
50
20
10
5
2
500
20 100 1,000 10,000
IMPULSE DURATION ( µs)
SURGE CURRENT (A)
1
2
15
1,000
10
2
10
3
10
4
10
5
10
6
INDEFINITE
MODEL SIZE 20mm
V18ZA40(P) - V68ZA20(P)
10,0001,000100
20
IMPULSE DURATION ( µs)
SURGE CURRENT (A)
5,000
10,000
2,000
500
100
20
10
2
1,000
200
50
1
5
1
2
15
10
2
10
3
10
4
10
5
10
6
INDEFINITE
MODEL SIZE 20mm
V120ZA20(P) - V180ZA20(P)
V82ZA20(P) - V180ZA20(P)
FIGURE 24. SURGE CURRENT RATING CURVES FOR
V82ZA12(P) - V180ZA10(P)
FIGURE 25. SURGE CURRENT RATING CURRENT FOR
V18ZA40(P) - V68ZA20(P)
FIGURE 26. SURGE CURRENT RATING CURVES FOR V120ZA20(P) - V180ZA20(P)
5,000
2,000
200
100
50
20
10
5
2
500
20 100 1,000 10,000
IMPULSE DURATION ( µs)
SURGE CURRENT (A)
1
2
15
10
4
10
5
10
6
10
3
INDEFINITE
1,000 10
2
MODEL SIZE 14mm
V82ZA12(P) - V180ZA10(P)
2,000
200
100
50
20
10
5
2
500
20 100 1,000 10,000
IMPULSE DURATION ( µs)
SURGE CURRENT (A)
1
2
15
1,000
10
2
10
3
10
4
10
5
10
6
INDEFINITE
MODEL SIZE 20mm
V18ZA40(P) - V68ZA20(P)
10,0001,000100
20
IMPULSE DURATION ( µs)
SURGE CURRENT (A)
5,000
10,000
2,000
500
100
20
10
2
1,000
200
50
1
5
1
2
15
10
2
10
3
10
4
10
5
10
6
INDEFINITE
MODEL SIZE 20mm
V120ZA20(P) - V180ZA20(P)
V18ZA40(P) - V68ZA20(P)
FIGURE 24. SURGE CURRENT RATING CURVES FOR
V82ZA12(P) - V180ZA10(P)
FIGURE 25. SURGE CURRENT RATING CURRENT FOR
V18ZA40(P) - V68ZA20(P)
FIGURE 26. SURGE CURRENT RATING CURVES FOR V120ZA20(P) - V180ZA20(P)
5,000
2,000
200
100
50
20
10
5
2
500
20 100 1,000 10,000
IMPULSE DURATION ( µs)
SURGE CURRENT (A)
1
2
15
10
4
10
5
10
6
10
3
INDEFINITE
1,000 10
2
MODEL SIZE 14mm
V82ZA12(P) - V180ZA10(P)
2,000
200
100
50
20
10
5
2
500
20 100 1,000 10,000
IMPULSE DURATION ( µs)
SURGE CURRENT (A)
1
2
15
1,000
10
2
10
3
10
4
10
5
10
6
INDEFINITE
MODEL SIZE 20mm
V18ZA40(P) - V68ZA20(P)
10,0001,000100
20
IMPULSE DURATION ( µs)
SURGE CURRENT (A)
5,000
10,000
2,000
500
100
20
10
2
1,000
200
50
1
5
1
2
15
10
2
10
3
10
4
10
5
10
6
INDEFINITE
MODEL SIZE 20mm
V120ZA20(P) - V180ZA20(P)
NOTE: If pulse ratings are exceeded, a shift of VN(DC)(at specified current) of more then +/-10% could result. This type of shift, which normally results
in a decrease of VN(DC), may result in the device not meeting the original published specifications, but does not prevent the device from continuing to
function, and to provide ample protection.
Repetitive Surge Capability for 20mm Parts
Figure 21 Figure 22
Figure 23 Figure 24
Note: Repetitive surge capability is qualified and tested based on 8/20us current waveform (not combination waveform) and UL1449 40.7.3 (Edition 4) test condition.
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/12/18
Metal-Oxide Varistors (MOVs)
Radial Lead Varistors > ZA Series
Operating Ambient
Temperature Range -55°C to +85°C
Storage Temperature Range -55°C to +125°C
Humidity Aging +85°C, 85% RH,1000 hours
+/-10% typical voltage change
Thermal Shock +85°C to -40°C 5 times
+/-10% typical voltage change
Solvent Resistance MIL–STD–202, Method 215
Moisture Sensitivity Level 1, J-STD-020
Lead Material Copper Clad Steel Wire
Soldering
Characteristics
Solderability per MIL–STD–202,
Method 208
Insulating Material Cured, flame retardant epoxy polymer
meets UL94V–0 requirements
Device Labeling Marked with LF, voltage, UL/CSA logos,
and date code
Physical Specifications Environmental Specifications
Wave Solder Profile
0
50
100
150
200
250
300
00.5 11.5 22.5 33.5 4
TIME(MINUTE
S)
TEMPERATURE (ºC)
Maximum Wave 240C
Lead–free Profile
0
50
100
150
200
250
300
00.5 11.5 22.5 33.5 4
TIME(MINUTES)
TEMPERATURE (ºC)
Maximum Wave 260C
Non Lead–free Profile
Figure 25 Figure 26
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/12/18
Metal-Oxide Varistors (MOVs)
Radial Lead Varistors > ZA Series
Product Dimensions (mm)
Dimen-
sion
VRMS
Voltage
Model
5mm Size 7mm Size 10mm Size 14mm Size 20mm Size
Min.
mm (in) Max.
mm (in) Min.
mm (in) Max.
mm (in) Min.
mm (in) Max.
mm (in) Min.
mm (in) Max.
mm (in) Min.
mm (in) Max.
mm (in)
AAll - 10 (0.394) - 12 (0.472) - 16 (0.630) - 20 (0.787) - 26.5
(1.043)
ØD All - 7 (0.276) - 9 (0.354) - 12.5 (0.492) - 17 (0.669) - 23 (0.906)
e
(see notes
below) All 4 (0.157) 6 (0.236) 4 (0.157) 6 (0.236) 6.5 (0.256) 8.5 (0.335) 6.5 (0.256) 8.5 (0.335) 6.5 (0.256)
(note 1 below) 8.5 (0.335)
(note 1 below)
e1
V8ZA-
V56ZA 1 (0.039) 3 (0.118) 1 (0.039) 3 (0.118) 1 (0.039) 3 (0.118) 1 (0.039) 3 (0.118) 1 (0.039) 3 (0.118)
V68ZA-
V100ZA 1.5 (0.059) 3.5
(0.138) 1.5 (0.059) 3.5
(0.138) 1.5 (0.059) 3.5 (0.138) 1.5 (0.059) 3.5
(0.138) 1.5 (0.059) 3.5 (0.138)
V120ZA-
V180ZA 1 (0.039) 3 (0.118) 1 (0.039) 3 (0.118) 1 (0.039) 3 (0.118) 1 (0.038) 3 (0.118) 1 (0.038) 3 (0.118)
V205ZA-
V750ZA 1.5 (0.059) 3.5
(0.138) - - - - - - - -
E
V8ZA-
V56ZA - 5 (0.197) - 5 (0.197) - 5 (0.197) - 5 (0.197) - 5 (0.197)
V68ZA-
V100ZA -5.6
(0.220) -5.6
(0.220) - 5.6 (0.220) - 5.6
(0.220) - 5.6 (0.220)
V120ZA-
V180ZA - 5 (0.197) - 5 (0.197) - 5 (0.197) - 5 (0.197) - 5 (0.197)
V205ZA-
V750ZA -5.6
(0.220) - - - - - - - -
Øb All 0.585
(0.023) 0.685
(0.027) 0.585
(0.023) 0.685
(0.027) 0.76
(0.030) 0.86
(0.034) 0.76
(0.030) 0.86
(0.034) 0.76
(0.030) 0.86
(0.034)
ATRIM All - 13.0
(0.512) - 15 (0.591) - 19.5 (0.768) - 22.5
(0.886) -29.0
(1.142)
LTRIM All 2.41
(0.095) 4.69
(0.185) 2.41
(0.095) 4.69
(0.185) 2.41
(0.095) 4.69
(0.185) 2.41
(0.095) 4.69
(0.185) 2.41
(0.095) 4.69
(0.185)
1. For 20mm size devices, a 10mm "e" dimension option is also available. Please refer to "Ordering Notes" section "X10" option code for additional information.
2. V24ZA50(P) and V24ZC50(P) only supplied with lead spacing of 6.35mm -/+0.5mm (0.25 -/+0.0196) Dimension e = 5.85 min. Does not apply to Tape and Reel parts.
NOTES: Dimensions in millimeters, inches in parentheses.
To order this crimped and trimmed lead style,
standard radial type model numbers are
changed by replacing the model letter "ZA" with
"ZC." This option is supplied in bulk only.
Standard Model Order As
V18ZA3P V18ZC3P
For crimped leads without trimming and any varitions to
the above, contact Littelfuse.
Example:
CRIMPED AND TRIMMED LEAD
Radial lead types can be supplied with combination
preformed crimp and trimmed leads. This option is
supplied to the dimensions shown.
*Seating plane interpretation per IEC-717
LTRIM
ATRIM
SEATING
PLANE
øD
øb
25.4
(1.00)
MIN
A
e
e1
E
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/12/18
Metal-Oxide Varistors (MOVs)
Radial Lead Varistors > ZA Series
Tape and Reel Specifications
CRIMPED LEADS "ZT" CRIMPED LEADS "ZT"
Crimped Leads "ZT" Crimped Leads "ZT"
Straight Leads "ZS"
Straight Leads "ZS"
Under-crimped Leads "ZU"
P1
P0
E
DP
DH DH
W1
W
Ft
W2W0
P
DP
C
Db
H0
DD0
H1SEATING
PLANE
P2
P1
P0
W0
E
DP
DH DH
W1
W
Ft
W2
P
DP
C
Db
H0
DD0
H1SEATING
PLANE
P2
P0
DH
E
DH
DP
W1
W
Ft
W2
P
DP
Db
H
DD0
H1
P1
P2
W0
P1
P0
P2
DH
E
DH
DP
W1
W
Ft
W2W0
P
DP
Db
H
DD0
H1
U
P1
P0
P2
DH
E
DH
DP
W1
W
Ft
W2W0
P
DP
Db
Ho
DD0
H1
Under-crimped Leads "ZU"
P0
U
DH
E
DH
DP
W1
W
Ft
W2
P
DP
Db
Ho
DD0
H1
P2
W0
P1
Crimped Leads "ZT" Crimped Leads "ZT"
Straight Leads "ZS"
Straight Leads "ZS"
Under-crimped Leads "ZU"
P1
P0
E
DP
DH DH
W1
W
Ft
W2W0
P
DP
C
Db
H0
DD0
H1SEATING
PLANE
P2
P1
P0
W0
E
DP
DH DH
W1
W
Ft
W2
P
DP
C
Db
H0
DD0
H1SEATING
PLANE
P2
P0
DH
E
DH
DP
W1
W
Ft
W2
P
DP
Db
H
DD0
H1
P1
P2
W0
P1
P0
P2
DH
E
DH
DP
W1
W
Ft
W2W0
P
DP
Db
H
DD0
H1
U
P1
P0
P2
DH
E
DH
DP
W1
W
Ft
W2W0
P
DP
Db
Ho
DD0
H1
Under-crimped Leads "ZU"
P0
U
DH
E
DH
DP
W1
W
Ft
W2
P
DP
Db
Ho
DD0
H1
P2
W0
P1
Crimped Leads "ZT" Crimped Leads "ZT"
Straight Leads "ZS"
Straight Leads "ZS"
Under-crimped Leads "ZU"
P1
P0
E
DP
DH DH
W1
W
Ft
W2W0
P
DP
C
Db
H0
DD0
H1SEATING
PLANE
P2
P1
P0
W0
E
DP
DH DH
W1
W
Ft
W2
P
DP
C
Db
H0
DD0
H1SEATING
PLANE
P2
P0
DH
E
DH
DP
W1
W
Ft
W2
P
DP
Db
H
DD0
H1
P1
P2
W0
P1
P0
P2
DH
E
DH
DP
W1
W
Ft
W2W0
P
DP
Db
H
DD0
H1
U
P1
P0
P2
DH
E
DH
DP
W1
W
Ft
W2W0
P
DP
Db
Ho
DD0
H1
Under-crimped Leads "ZU"
P0
U
DH
E
DH
DP
W1
W
Ft
W2
P
DP
Db
Ho
DD0
H1
P2
W0
P1
Crimped Leads "ZT" Crimped Leads "ZT"
Straight Leads "ZS"
Straight Leads "ZS"
Under-crimped Leads "ZU"
P1
P0
E
DP
DH DH
W1
W
Ft
W2W0
P
DP
C
Db
H0
DD0
H1SEATING
PLANE
P2
P1
P0
W0
E
DP
DH DH
W1
W
Ft
W2
P
DP
C
Db
H0
DD0
H1SEATING
PLANE
P2
P0
DH
E
DH
DP
W1
W
Ft
W2
P
DP
Db
H
DD0
H1
P1
P2
W0
P1
P0
P2
DH
E
DH
DP
W1
W
Ft
W2W0
P
DP
Db
H
DD0
H1
U
P1
P0
P2
DH
E
DH
DP
W1
W
Ft
W2W0
P
DP
Db
Ho
DD0
H1
Under-crimped Leads "ZU"
P0
U
DH
E
DH
DP
W1
W
Ft
W2
P
DP
Db
Ho
DD0
H1
P2
W0
P1
UNDER CRIMPED LEADS "ZU" UNDER CRIMPED LEADS "ZU"
Crimped Leads "ZT" Crimped Leads "ZT"
Straight Leads "ZS"
Straight Leads "ZS"
Under-crimped Leads "ZU"
P1
P0
E
DP
DH DH
W1
W
Ft
W2W0
P
DP
C
Db
H0
DD0
H1SEATING
PLANE
P2
P1
P0
W0
E
DP
DH DH
W1
W
Ft
W2
P
DP
C
Db
H0
DD0
H1SEATING
PLANE
P2
P0
DH
E
DH
DP
W1
W
Ft
W2
P
DP
Db
H
DD0
H1
P1
P2
W0
P1
P0
P2
DH
E
DH
DP
W1
W
Ft
W2W0
P
DP
Db
H
DD0
H1
U
P1
P0
P2
DH
E
DH
DP
W1
W
Ft
W2W0
P
DP
Db
Ho
DD0
H
1
Under-crimped Leads "ZU"
P0
U
DH
E
DH
DP
W1
W
Ft
W2
P
DP
Db
Ho
DD0
H1
P2
W0
P1
Crimped Leads "ZT" Crimped Leads "ZT"
Straight Leads "ZS"
Straight Leads "ZS"
Under-crimped Leads "ZU"
P1
P0
E
DP
DH DH
W1
W
Ft
W2W0
P
DP
C
Db
H0
DD0
H1SEATING
PLANE
P2
P1
P0
W0
E
DP
DH DH
W1
W
Ft
W2
P
DP
C
Db
H0
DD0
H1SEATING
PLANE
P2
P0
DH
E
DH
DP
W1
W
Ft
W2
P
DP
Db
H
DD0
H1
P1
P2
W0
P1
P0
P2
DH
E
DH
DP
W1
W
Ft
W2W0
P
DP
Db
H
DD0
H1
U
P1
P0
P2
DH
E
DH
DP
W1
W
Ft
W2W0
P
DP
Db
Ho
DD0
H1
Under-crimped Leads "ZU"
P0
U
DH
E
DH
DP
W1
W
Ft
W2
P
DP
Db
Ho
DD0
H1
P2
W0
P1
5 and 7mm Devices 10, 14 and 20mm Devices
STRAIGHT LEADS "ZS" STRAIGHT LEADS "ZS"
Refer to next page for dimension measurement specifics.
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/12/18
Metal-Oxide Varistors (MOVs)
Radial Lead Varistors > ZA Series
SYMBOL DESCRIPTION MODEL SIZE
5mm 7mm 10mm 14mm 20mm
PPitch of Component 12.7 +/- 1.0 12.7 +/- 1.0 25.4 +/- 1.0 25.4 +/- 1.0 25.4 +/- 1.0
P0Feed Hole Pitch 12.7 +/- 0.2 12.7 +/- 0.2 12.7 +/- 0.2 12.7 +/- 0.2 12.7 +/- 0.2
P1Feed Hole Center to Pitch 3.85 +/- 0.7 3.85 +/- 0.7 8.85 +/- 0.7 8.85 +/- 0.7 8.85 +/- 0.7
P2Hole Center to Component Center 6.35 +/- 1.0 6.35 +/- 1.0 12.7 +/- 0.7 12.7 +/- 0.7 12.7 +/- 0.7
FLead to Lead Distance 5.0 +/- 1.0 5.0 +/-1.0 7.5 +/- 1.0 7.5 +/- 1.0 7.5 +/- 1.0
hComponent Alignment 2.0 Max 2.0 Max 2.0 Max 2.0 Max 2.0 Max
WTape Width 18.0 +1.0 / -0.5 18.0 +1.0 / -0.5 18.0 +1.0 / -0.5 18.0 +1.0 / -0.5 18.0 +1.0 / -0.5
W0Hold Down Tape Width 12.0 +/- 0.3 12.0 +/- 0.3 12.0 +/- 0.3 12.0 +/- 0.3 12.0 +/- 0.3
W1Hole Position 9.0 +0.75 / -0.50 9.0 +0.75 / -0.50 9.0 +0.75 / -0.50 9.0 +0.75 / -0.50 9.0 +0.75 / -0.50
W2Hold Down Tape Position 0.5 Max 0.5 Max 0.5 Max 0.5 Max 0.5 Max
HHeight from Tape Center to
Component Base 18.0 +2.0 / -0.0 18.0 +2.0 / -0.0 18.0 +2.0 / -0.0 18.0 +2.0 / -0.0 18.0 +2.0 / -0.0
H0Seating Plane Height 16.0 +/- 0.5 16.0 +/- 0.5 16.0 +/- 0.5 16.0 +/- 0.5 16.0 +/- 0.5
H1Component Height 29.0 Max 32.0 Max 36.0 Max 40.0 Max 46.5 Max
D0Feed Hole Diameter 4.0 +/- 0.2 4.0 +/- 0.2 4.0 +/- 0.2 4.0 +/- 0.2 4.0 +/- 0.2
tTotal Tape Thickness 0.7 +/- 0.2 0.7 +/- 0.2 0.7 +/- 0.2 0.7 +/- 0.2 0.7 +/- 0.2
UUndercrimp Width 8.0 Max 8.0 Max 8.0 Max 8.0 Max 8.0 Max
pComponent Alignment 3° Max 3º Max 3° Max 3° Max 3° Max
Tape and Reel Specifications (continued)
NOTES:
• Radial devices on tape are supplied with crimped leads, straight leads, or under-crimped leads
• Leads are offset by product dimension e1
• Conforms to ANSI and EIA specifications
• Can be supplied to IEC Publication 286-2
• 5mm parts are available on tape and reel up to 385 VAC only
Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and
test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications.
Read complete Disclaimer Notice at www.littelfuse.com/disclaimer-electronics.
© 2018 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/12/18
Metal-Oxide Varistors (MOVs)
Radial Lead Varistors > ZA Series
Part Numbering System
For “VARISTOR”
NOMINAL VOLTAGE (VNOM )
(One, T
wo or Three Digits)
V XXX ZA XXXX
RELATIVE ENERGY INDICATOR
(One or Two Digits)
LEAD-FREE,
HALOGEN-FREE AND
R
oHS COMPLIANT INDICATOR
P
See OPTIONS CODES notes below
XXXXX
OPTION CODES
(See notes below)
BASE PART CODES
(See Ratings & Specifications tables and notes below)
SERIES +
PACKAGING / LEAD STYLE
DESIGNA
TOR
(See BASE
PART CODES notes below)
ZA = Bulk Pack / Straight Leads (standard)
ZC = Bulk Pack / Crimped and Trimmed Leads
ZS = Ta pe and Reel / Straight Leads
ZT = Tape and Reel / Crimped Leads
ZU = Tape and Reel / Under-Crimped Leads
COPPER ELECTR
ODE
W
Ordering Notes:
Series + Packaging / Lead Style Designators:
Ordering examples:
Straight
Lead
Bulk Pack
(standard)
Straight
Lead
Tape &
Reel
Crimped
Lead
Tape &
Reel
Crimped &
Trimmed
Lead
Bulk Pack
Under-
Crimp Lead
Tape &
Reel
V18ZA3P V18ZS3P V18ZT3P V18ZC3P V18ZU3P
Standard Model Order As
V18ZA40P V18ZA40PX10
Littelfuse ZA Series varistors are shipped standard in bulk pack
with straight leads and lead spacing outlined in the Package
Dimensions section of this data sheet. Contact your Littelfuse
sales representative to discuss non-standard options.
Tape & Reel Quantities:
Crimped lead ZA Series varistors are supplied standard in tape and
reel, denoted with "ZT."
"ZC" style is supplied in bulk only.
"ZU" style is supplied in tape and reel only.
For crimped leads without trimming and any varitions other than that
described above, please contact Littelfuse.
Packaging and Quantities:
Device Size Voltage Quantity Per Reel
"S" Reel "T" Reel "U" Reel
5mm All 1000 1000 1000
7mm All 1000 1000 1000
10mm All 500 500 500
14mm < 300V 500 500 500
20mm < 300V 500 500 400
For standard parts, use the BASE PART designator only.
For parts with non-standard options (such as additional form, packaging
and lead space options), use BASE PART + OPTION CODE.
OPTION CODE items are subject to availability and minimum order
requirements. Please contact a Littelfuse products representative for
additional information or questions
BASE PART CODES: OPTION CODES:
Standard Model Order As
V18ZA40P V18ZA40PX2855
X10: 10MM LEAD SPACING OPTION --
For 10 -/+1 mm (0.394-/+0.039 in) lead spacing (available
on 20mm diameter models only), append standard
model BASE PART number with "X10." Example:
X2855: Nickel Barrier COATED WIRE OPTION --
All standard parts use tinned copper clad steel wire.
Nickel Barrier Coated wire is available as an option,
consisting of Copper wire with a flashing of Nickel
followed by a top coating of Tin. To order append standard
model BASE PART number with "X2855." Example:
X1347: Hi-Temperature phenolic coating option --
Phenolic Coated C-III Series devices are available with improved
maximum operating maximum temperature of 125°C.
To order, add X1347 to end of part number
(Example: V22ZA3PX1347).
For additional information please refer to the section labeled
"Phenolic Coating Option" within this document.