138D
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Wet Tantalum Capacitors Silver Case TANTALEX® Capacitors
Hermetically-Sealed
FEATURES
• Terminations: Axial, standard tin/lead (SnPb),
100 % tin (RoHS-compliant) available
• Model 138D is the commercial equivalents of
Tansitor styles WT, UWT, Mallory-NACC styles
TLX, TXX and Military styles CL66, CL67, CLR65, and
CLR69, designed to meet the performance requirements
of Military Specification MIL-PRF-39006/09/21.
Capacitors in accordance with military specifications
should be ordered by their military part numbers.
• Mounting: Through-hole
• Material categorization: For definitions of compliance
please see www.vishay.com/doc?99912
Note
*Lead (Pb)-containing terminations are not RoHS-compliant.
Exemptions may apply.
PERFORMANCE CHARACTERISTICS
Operating Temperature: - 55 °C to + 85 °C (to + 125 °C
with voltage derating)
Capacitance Tolerance: At 120 Hz, + 25 °C. ± 20 %
standard. ± 10 %, ± 5 % available as special.
DC Leakage Current (DCL Max.): At + 25 °C, + 85 °C and
+ 125 °C: Leakage current shall not exceed the values listed
in the Standard Ratings tables.
Life Test: Capacitors are capable of withstanding a 2000 h
life test at a temperature of + 85 °C or + 125 °C at the
applicable rated DC working voltage.
Following the life test:
1. DCL shall not exceed 125 % of the original requirement.
2. The ESR shall not exceed 200 % of the initial
requirement.
3. Change in capacitance value shall not exceed the
percentages below.
a) 6 VDC units: + 10 % to - 25 % of initial measurement.
b) 8 VDC and 10 VDC units: + 10 % to - 20 % of initial
measurement.
c) 15 VDC units: + 10 % to - 15 % of initial measurement.
d) 20 VDC and above: ± 10 % of initial measurement.
Note
• Packaging: The use of formed plastic trays for packaging these axial lead components is standard. Tape and reel is not available due to the
unit weight.
ORDERING INFORMATION
138D 306 X0 006 C 2 E3
MODEL CAPACITANCE CAPACITANCE
TOLERANCE
DC VOLTAGE RATING
AT + 85 °C
CASE
CODE
TERMINATION RoHS COMPLIANT
This is expressed
in picofarads. The
first two digits are
the significant
figures. The third is
the number of
zeros to follow
X0 = ± 20 %
X9 = ± 10 %
X5 = ± 5 %
special order
This is expressed in volts.
To complete the
three-digit block, zeros
precede the voltage
rating. A decimal point is
indicated by an “R”
(6R3 = 6.3 V)
See
Ratings
and Case
Codes
table
0 = No outer sleeve
2 = Outer plastic film
insulation
E3 = 100 % tin
termination
(RoHS compliant)
Blank = SnPb
termination
(standard design)
138D
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DIMENSIONS in inches [millimeters]
CASE
CODE
BARE TUBE WITH OUTER PLASTIC -
FILM INSULATION LEAD LENGTH
MAX.
WEIGHT
(oz./g)
D L D (MAX.) L (MAX.)
C0.188 ± 0.016
[4.78 ± 0.41]
0.453 + 0.031/- 0.016
[11.51 + 0.79/- 0.41]
0.219
[5.56]
0.608
[15.45]
1.500 ± 0.250
[38.10 ± 6.35]
0.07
[2.0]
F0.281 ± 0.016
[7.14 ± 0.41]
0.641 + 0.031/- 0.016
[16.28 + 0.79/- 0.41]
0.312
[7.92]
0.796
[20.22]
2.250 ± 0.250
[57.15 ± 6.35]
0.18
[5.1]
T0.375 ± 0.016
[9.53 ± 0.41]
0.766 + 0.031/- 0.016
[19.46 + 0.79/- 0.41]
0.406
[10.31]
0.921
[23.40]
2.250 ± 0.250
[57.15 ± 6.35]
0.36
[10.2]
K0.375 ± 0.016
[9.53 ± 0.41]
1.062 + 0.031/- 0.023
[26.97 + 0.79/- 0.58]
0.406
[10.31]
1.127
[30.91]
2.250 ± 0.250
[57.15 ± 6.35]
0.49
[13.9]
STANDARD RATINGS
CAPACITANCE
(μF)
CASE
CODE PART NUMBER (1)
MAX. ESR
AT + 25 °C
120 Hz
()
MAX. IMP.
AT - 55 °C
120 Hz
()
MAX. DCL (μA)
AT
MAX. CAPACITANCE
CHANGE (%) AT
MAX. RMS
RIPPLE
CURRENT
120 Hz
(mA)
+ 25 °C + 85 °C
+ 125 °C - 55 °C + 85 °C + 125 °C
6 VDC AT + 85 °C; 4 VDC AT + 125 °C
30 C 138D306X0006C2 4 100 1 2 - 40 + 10.5 + 12 140
68 C 138D686X0006C2 4 60 1 2 - 40 + 14 + 16 160
140 F 138D147X0006F2 2 40 1 3 - 40 + 14 + 16 330
270 F 138D277X0006F2 4 25 1 6.5 - 44 + 17.5 + 20 330
330 T 138D337X0006T2 2 20 2 7.9 - 44 + 14 + 16 410
560 T 138D567X0006T2 3 25 2 13 - 64 + 17.5 + 20 410
1200 K 138D128X0006K2 1.6 20 3 14 - 80 + 25 + 25 530
8 VDC AT + 85 °C; 5 VDC AT + 125 °C
25 C 138D256X0008C2 4 100 1 2 - 40 + 10.5 + 12 140
56 C 138D566X0008C2 4 59 1 2 - 40 + 14 + 16 160
220 F 138D227X0008F2 4 30 1 7 - 44 + 17.5 + 20 270
430 T 138D437X0008T2 3 25 2 14 - 64 + 17.5 + 20 410
850 K 138D857X0008K2 1 22 4 16 - 80 + 25 + 25 670
10 VDC AT + 85 °C; 7 VDC AT + 125 °C
20 C 138D206X0010C2 4 175 1 2 - 32 + 10.5 + 12 140
47 C 138D476X0010C2 5 100 1 2 - 36 + 14 + 16 160
100 F 138D107X0010F2 2 60 1 4 - 36 + 14 + 16 270
180 F 138D187X0010F2 4 40 1 7 - 36 + 14 + 16 270
250 T 138D257X0010T2 2 30 2 10 - 40 + 14 + 16 410
390 T 138D397X0010T2 3 25 2 16 - 64 + 17.5 + 20 410
750 K 138D757X0010K2 1 23 4 16 - 80 + 25 + 25 670
15 VDC AT + 85 °C; 10 VDC AT + 125 °C
15 C 138D156X0015C2 5 155 1 2 - 24 + 10.5 + 12 130
33 C 138D336X0015C2 5 90 1 2 - 28 + 14 + 16 160
70 F 138D706X0015F2 4 75 1 4 - 28 + 14 + 16 270
120 F 138D127X0015F2 4 50 1 7 - 28 + 17.5 + 20 270
170 T 138D177X0015T2 2 35 2 10 - 32 + 14 + 16 410
270 T 138D277X0015T2 3 30 2 16 - 56 + 17.5 + 20 410
540 K 138D547X0015K2 1.0 23 6 24 - 80 + 25 + 25 610
20 VDC AT + 85 °C; 13 VDC AT + 125 °C
27 C 138D276X0020C2 5 100 1 2 - 20 + 11 + 14 160
220 T 138D227X0020T2 4 30 2 16 - 48 + 13 + 15 410
Note
(1) Part numbers listed are for units with outer plastic-film insulation and a capacitance tolerance of ± 20 %. For bare case units, substitute
“0” for “2” at the end of the part number. For capacitors with ± 10 % tolerance, change the digit following the letter “X” to “9”. For RoHS
compliant add “E3“.
L
Weld
0.250 [6.35]
Max.
0.0253 ± 0.002 [0.64 ± 0.05] dia.
(no. 22 AWG) tinned solderable leads
Tantalum
D
138D
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25 VDC AT + 85 °C; 15 VDC AT + 125 °C
10 C 138D106X0025C2 6 220 1 2 - 16 + 8 + 9 130
22 C 138D226X0025C2 5 140 1 2 - 20 + 10.5 + 12 160
27 C 138D276X0025C2 4.3 110 2 9 - 35 + 12 + 15 160
50 F 138D506X0025F2 4 70 1 5 - 28 + 13 + 15 270
100 F 138D107X0025F2 4 50 1 10 - 28 + 13 + 15 270
180 T 138D187X0025T2 4 32 2 18 - 48 + 13 + 15 340
350 K 138D357X0025K2 1.3 24 7 28 - 70 + 25 + 25 580
30 VDC AT + 85 °C; 20 VDC AT + 125 °C
8.0 C 138D805X0030C2 7.5 275 1 2 - 16 + 8 + 12 130
15 C 138D156X0030C2 8 175 1 2 - 20 + 10.5 + 12 160
40 F 138D406X0030F2 4 65 1 5 - 24 + 10.5 + 12 270
100 T 138D107X0030T2 6 40 2 12 - 28 + 10.5 + 12 410
150 T 138D157X0030T2 2.5 35 2 16 - 48 + 13 + 15 340
300 K 138D307X0030K2 1.6 25 8 32 - 60 + 25 + 25 550
35 VDC AT + 85 °C; 22 VDC AT + 125 °C
68 F 138D686X0035F2 6 60 1 8 - 24 + 12 + 15 270
120 T 138D127X0035T2 4 38 2 16 - 30 + 13 + 15 410
270 K 138D277X0035K2 2.2 23 8 32 - 45 + 20 + 25 500
50 VDC C AT + 85 °C; 30 VDC AT + 125 °C
5.0 C 138D505X0050C2 9 400 1 2 - 16 + 5 + 6 130
10 C 138D106X0050C2 8 250 1 2 - 24 + 8 + 9 160
25 F 138D256X0050F2 6 95 1 5 - 20 + 10.5 + 12 270
47 F 138D476X0050F2 6 70 1 9 - 28 + 10.5 + 15 270
60 T 138D606X0050T2 3 45 2 12 - 16 + 10.5 + 12 410
82 T 138D826X0050T2 4 45 2 16 - 32 + 13 + 15 410
160 K 138D167X0050K2 2.2 27 8 32 - 50 + 25 + 25 460
60 VDC AT + 85 °C; 40 VDC AT + 125 °C
4.0 C 138D405X0060C2 10 550 1 2 - 16 + 5 + 6 110
8.2 C 138D825X0060C2 8 275 1 2 - 24 + 8 + 9 140
20 F 138D206X0060F2 5 105 1 5 - 16 + 10.5 + 12 270
39 F 138D396X0060F2 7 90 1 9 - 28 + 10.5 + 12 330
50 T 138D506X0060T2 4 50 2 12 - 16 + 10.5 + 12 410
68 T 138D686X0060T2 6 50 2 16 - 32 + 10.5 + 12 410
140 K 138D147X0060K2 2.4 28 8 32 - 40 + 20 + 20 430
75 VDC AT + 85 °C; 50 VDC AT + 125 °C
3.5 C 138D355X0075C2 10 650 1 2 - 16 + 5 + 6 110
6.8 C 138D685X0075C2 8 300 1 2 - 20 + 8 + 9 140
15 F 138D156X0075F2 6.5 150 1 5 - 16 + 8 + 9 270
33 F 138D336X0075F2 7 90 1 10 - 24 + 10.5 + 15 270
40 T 138D406X0075T2 5 60 2 12 - 16 + 10.5 + 12 410
56 T 138D566X0075T2 6 60 2 17 - 28 + 10.5 + 15 410
110 K 138D117X0075K2 3.1 29 9 36 - 35 + 20 + 20 110
100 VDC AT + 85 °C; 65 VDC AT + 125 °C
2.5 C 138D255X0100C2 26.5 950 1 2 - 16 + 7 + 8 100
4.7 C 138D475X0100C2 10 500 1 2 - 16 + 7 + 8 130
11 F 138D116X0100F2 6 200 1 4 - 16 + 7 + 8 230
22 F 138D226X0100F2 7 100 1 9 - 16 + 7 + 8 230
30 T 138D306X0100T2 4 80 2 12 - 16 + 7 + 8 340
43 T 138D436X0100T2 6 70 2 17 - 20 + 7 + 8 340
86 K 138D866X0100K2 3.1 30 9 36 - 25 + 15 + 15 400
125 VDC AT + 85 °C; 85 VDC AT + 125 °C
1.7 C 138D175X0125C2 54.6 1250 1 2 - 16 + 7 + 8 100
3.6 C 138D365X0125C2 15 600 1 2 - 16 + 7 + 8 110
9.0 F 138D905X0125F2 15 240 1 5 - 16 + 7 + 8 210
14 F 138D146X0125F2 12 167 1 7 - 16 + 7 + 8 210
18 T 138D186X0125T2 11 129 2 9 - 16 + 7 + 8 340
25 T 138D256X0125T2 10 93 2 13 - 16 + 7 + 8 340
56 K 138D566X0125K2 4.1 32 10 40 - 25 + 15 + 15 400
STANDARD RATINGS
CAPACITANCE
(μF)
CASE
CODE PART NUMBER (1)
MAX. ESR
AT + 25 °C
120 Hz
()
MAX. IMP.
AT - 55 °C
120 Hz
()
MAX. DCL (μA)
AT
MAX. CAPACITANCE
CHANGE (%) AT
MAX. RMS
RIPPLE
CURRENT
120 Hz
(mA)
+ 25 °C + 85 °C
+ 125 °C - 55 °C + 85 °C + 125 °C
Note
(1) Part numbers listed are for units with outer plastic-film insulation and a capacitance tolerance of ± 20 %. For bare case units, substitute
“0” for “2” at the end of the part number. For capacitors with ± 10 % tolerance, change the digit following the letter “X” to “9”. For RoHS
compliant add “E3“.
138D
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EXTENDED RATINGS
CAPACITANCE
(μF)
CASE
CODE PART NUMBER (1)
MAX. ESR
AT + 25 °C
120 Hz
()
MAX. IMP.
AT - 55 °C
120 Hz
()
MAX. DCL (μA)
AT
MAX. CAPACITANCE CHANGE
(%) AT
MAX. RMS
RIPPLE
CURRENT
120 Hz
(mA)
+ 25 °C + 85 °C
+ 125 °C - 55 °C + 85 °C + 125 °C
6 VDC AT + 85 °C; 4 VDC AT + 125 °C
560 F 138D567X0006F2 2.5 20 3 14 - 80 + 16 + 20 300
820 F 138D827X0006F2 2.5 18 3 14 - 88 + 16 + 20 300
1500 T 138D158X0006T2 1.5 18 5 20 - 90 + 20 + 25 480
2200 K 138D228X0006K2 1 13 6 24 - 90 + 25 + 30 670
8 VDC AT + 85 °C; 5 VDC AT + 125 °C
180 C 138D187X0008C2 3 45 2 9 - 60 + 13 + 16 180
470 F 138D477X0008F2 2.5 25 3 14 - 75 + 16 + 20 300
680 F 138D687X0008F2 2.5 22 3 14 - 83 + 16 + 20 300
1800 K 138D188X0008K2 1 14 7 25 - 90 + 20 + 30 670
10 VDC AT + 85 °C; 7 VDC AT + 125 °C
100 C 138D107X0010C2 3 60 2 9 - 50 + 13 + 16 160
150 C 138D157X0010C2 3 54 2 9 - 55 + 13 + 16 180
390 F 138D397X0010F2 2.5 30 3 16 - 70 + 16 + 20 300
560 F 138D567X0010F2 2.5 27 3 16 - 77 + 16 + 20 300
1200 T 138D128X0010T2 1.5 18 5 20 - 88 + 20 + 25 480
1500 K 138D158X0010K2 1 15 7 25 - 88 + 25 + 30 670
15 VDC AT + 85 °C; 10 VDC AT + 125 °C
68 C 138D686X0015C2 4 80 2 9 - 40 + 13 + 16 140
100 C 138D107X0015C2 4 72 2 9 - 44 + 13 + 16 160
270 F 138D277X0015F2 2.5 35 3 16 - 60 + 16 + 20 300
390 F 138D397X0015F2 2.5 31 3 16 - 16 + 16 + 20 300
540 T 138D547X0015T2 1.8 25 6 24 - 70 + 20 + 25 440
820 T 138D827X0015T2 1.8 22 6 24 - 77 + 20 + 25 440
1000 K 138D108X0015K2 1.2 17 8 32 - 77 + 25 + 30 610
20 VDC AT + 85 °C; 13 VDC AT + 125 °C
56 C 138D566X0020C2 4.3 90 2 9 - 38 + 13 + 16 140
82 C 138D826X0020C2 4.3 81 2 9 - 43 + 13 + 16 160
220 F 138D227X0020F2 2.7 35 3 16 - 60 + 16 + 20 300
330 F 138D337X0020F2 2.7 31 3 16 - 66 + 16 + 20 300
25 VDC AT + 85 °C; 15 VDC AT + 125 °C
47 C 138D476X0025C2 4.3 100 2 9 - 35 + 12 + 15 140
68 C 138D686X0025C2 4.3 90 2 9 - 40 + 12 + 15 160
180 F 138D187X0025F2 2.7 37 3 16 - 55 + 13 + 16 300
270 F 138D277X0025F2 2.7 33 3 16 - 62 + 13 + 16 300
350 T 138D357X0025T2 1.8 27 7 28 - 60 + 20 + 25 440
30 VDC AT + 85 °C; 20 VDC AT + 125 °C
39 C 138D396X0030C2 5.2 110 2 9 - 32 + 12 + 15 140
56 C 138D566X0030C2 5.2 100 2 9 - 38 + 12 + 15 140
150 F 138D157X0030F2 2.5 40 3 16 - 50 + 13 + 16 300
220 F 138D227X0030F2 2.5 36 3 16 - 60 + 13 + 16 300
330 T 138D337X0030T2 1.8 28 8 32 - 50 + 20 + 25 440
470 T 138D477X0030T2 1.8 25 8 32 - 65 + 20 + 25 440
560 K 138D567X0030K2 1.3 20 9 36 - 65 + 25 + 30 590
Note
• Part numbers listed are for units with outer plastic-film insulation and a capacitance tolerance of ± 20 %. For bare case units, substitute “0”
for “2” at the end of the part number. For capacitors with ± 10 % tolerance, change the digit following the letter “X” to “9”. For RoHS
compliant add “E3“.
138D
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35 VDC AT + 85 °C; 22 VDC AT + 125 °C
33 C 138D336X0035C2 5.2 130 2 9 - 30 + 10 + 12 140
47 C 138D476X0035C2 5.2 115 2 9 - 35 + 10 + 12 140
120 F 138D127X0035F2 2.5 45 3 16 - 45 + 13 + 16 300
220 T 138D227X0035T2 1.8 30 8 32 - 45 + 20 + 25 440
390 T 138D397X0035T2 1.8 27 8 32 - 58 + 20 + 25 440
470 K 138D477X0035K2 1.3 21 9 36 - 58 + 25 + 30 590
50 VDC AT + 85 °C; 30 VDC AT + 125 °C
22 C 138D226X0050C2 5 150 2 9 - 24 + 10 + 12 140
33 C 138D336X0050C2 5 135 2 9 - 29 + 10 + 12 140
82 F 138D826X0050F2 2.5 55 4 24 - 35 + 10 + 15 300
120 F 138D127X0050F2 2.5 49 4 24 - 42 + 12 + 15 300
160 T 138D167X0050T2 1.8 32 6 32 - 35 + 20 + 25 420
270 T 138D277X0050T2 1.8 29 8 32 - 46 + 20 + 25 440
330 K 138D337X0050K2 1.5 22 9 36 - 46 + 25 + 30 550
60 VDC AT + 85 °C; 40 VDC AT + 125 °C
18 C 138D186X0060C2 5 160 3 12 - 20 + 10 + 12 140
27 C 138D276X0060C2 5 144 3 12 - 24 + 10 + 12 140
68 F 138D686X0060F2 3 60 4 20 - 30 + 12 + 15 270
100 F 138D107X0060F2 2.5 54 4 20 - 36 + 12 + 15 300
140 T 138D147X0060T2 2 32 8 32 - 30 + 16 + 20 420
220 T 138D227X0060T2 1.8 29 8 32 - 40 + 16 + 20 440
270 K 138D277X0060K2 1.5 23 9 36 - 45 + 20 + 25 550
75 VDC AT + 85 °C; 50 VDC AT + 125 °C
15 C 138D156X0075C2 5 175 3 12 - 16 + 10 + 12 140
22 C 138D226X0075C2 5 157 3 12 - 19 + 10 + 12 140
56 F 138D566X0075F2 3 70 4 24 - 25 + 12 + 15 270
82 F 138D826X0075F2 2.5 63 4 24 - 30 + 12 + 15 300
110 T 138D117X0075T2 2 33 9 36 - 25 + 16 + 20 420
180 T 138D187X0075T2 1.8 30 9 36 - 35 + 16 + 20 440
220 K 138D227X0075K2 2.2 24 10 40 - 40 + 20 + 25 450
100 VDC AT + 85 °C; 65 VDC AT + 125 °C
8.2 C 138D825X0100C2 6 250 3 12 - 12 + 10 + 12 130
10 C 138D106X0100C2 6 200 3 12 - 17 + 10 + 12 130
33 F 138D336X0100F2 3.5 85 5 24 - 18 + 12 + 15 250
39 F 138D396X0100F2 3.5 80 5 24 - 20 + 12 + 15 250
68 T 138D686X0100T2 2.2 40 10 40 - 30 + 14 + 16 400
120 K 138D127X0100K2 2.8 30 12 48 - 35 + 15 + 17 440
125 VDC AT + 85 °C; 85 VDC AT + 125 °C
6.8 C 138D685X0125C2 11.7 300 3 12 - 14 + 10 + 12 130
27 F 138D276X0125F2 3.5 90 5 24 - 18 + 12 + 15 250
39 T 138D396X0125T2 2.2 60 10 40 - 16 + 14 + 16 400
47 T 138D476X0125T2 2.2 50 10 40 - 26 + 14 + 16 400
82 K 138D826X0125K2 2.8 32 12 48 - 30 + 15 + 17 440
EXTENDED RATINGS
CAPACITANCE
(μF)
CASE
CODE PART NUMBER (1)
MAX. ESR
AT + 25 °C
120 Hz
()
MAX. IMP.
AT - 55 °C
120 Hz
()
MAX. DCL (μA)
AT
MAX. CAPACITANCE CHANGE
(%) AT
MAX. RMS
RIPPLE
CURRENT
120 Hz
(mA)
+ 25 °C + 85 °C
+ 125 °C - 55 °C + 85 °C + 125 °C
Note
• Part numbers listed are for units with outer plastic-film insulation and a capacitance tolerance of ± 20 %. For bare case units, substitute “0”
for “2” at the end of the part number. For capacitors with ± 10 % tolerance, change the digit following the letter “X” to “9”. For RoHS
compliant add “E3“.
138D
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PERFORMANCE CHARACTERISTICS
1. Operating Temperature:
Capacitors are designed to
operate over the temperature range of - 55 °C to + 125 °C.
2. DC Working Voltage: The DC working voltage is the
maximum operating voltage for continuous duty at the
rated temperature.
3. Surge Voltage: The surge DC rating is the maximum
voltage to which the capacitors should be subjected
under any conditions. This includes transients and peak
ripple at the highest line voltage. The surge voltage of
capacitors rated below 150 V is 115 % of the rated DC
working voltage. The surge voltage of capacitors rated
at 150 VDC is 165 V.
3.1 Surge Voltage Test: Capacitors shall withstand the
surge voltage test applied through a 1000 ± 10 %
resistor in series with the capacitor and voltage source at
the rate of one-half min on, four and one-half min. off, for
1000 successive test cycles at + 85 °C or + 125 °C.
4. Capacitance Tolerance: The capacitance of all
capacitors shall be within the specified tolerance limits
of the nominal rating.
4.1 Capacitance measurements shall be made by the
bridge method at or referred to, a frequency of 120 Hz
at a temperature of + 25 °C. A polarizing voltage shall be
used of such magnitude that there shall be no reversal
of polarity due to the AC component. The maximum AC
voltage will be 1 VRMS applied during measurement.
5. Capacitance Change With Temperature: The
capacitance change with temperature shall not exceed
the limits given in the Standard and Extended Ratings
table for each capacitor.
6. Equivalent Series Resistance: Measurements shall be
made by the bridge method at or referred to, a
frequency of 120 Hz at a temperature of + 25 °C. A
polarizing voltage shall be used of such magnitude that
there shall be no reversal of polarity due to the AC
component. The maximum AC voltage will be 1 VRMS
applied during measurement.
6.1 The equivalent series resistance shall not exceed the
maximum value in ohms listed in the Standard and
Extended Ratings table for each capacitor.
6.2 The dissipation factor may be calculated from the
equivalent series resistance and capacitance values as
shown:
where:
DF = Dissipation factor in %
R = ESR in
C = Capacitance in μF
f = Frequency in Hz
At 120 Hz, the above equation becomes:
For example, percent dissipation factor of a 30 μF,
6 V capacitor, which has a maximum ESR of 3.4 at
+ 25 °C and 120 Hz, would be calculated as shown:
TYPICAL CURVES OF IMPEDANCE AS A FUNCTION OF FREQUENCY AT VARIOUS TEMPERATURES
- 55
- 40
- 20
+ 25
+ 85
IMPEDANCE IN ()
0.2
1.0
10
100
200
FREQUENCY IN Hz
100 1K 10K 100K 1M 10M
“K” Case 120 μF , 25 V Capacitors
°C
°C
°C
°C
125 °C
- 55
- 40
- 20
+ 25
+ 85
+125
FREQUENCY IN Hz
IMPEDANCE IN ()
100 1K 10K 100K 1M 10M
0.2
1.0
10
100
200
“C” Case 10 μF. 100 V Capacitors
°C
°C
°C
°C
°C
°C
UP TO
+ 85 °C
WORKING
VOLTAGE
(V)
AT
+ 125 °C
WORKING
VOLTAGE
(V)
UP TO
+ 85 °C
WORKING
VOLTAGE
(V)
AT
+ 125 °C
WORKING
VOLTAGE
(V)
6 4 35 22
8 5 50 30
10 7 60 40
15 10 75 50
20 13 100 70
25 15 125 85
30 20 150 100
DF 2fRC
104
------------------
=
DF R x C
13.26
---------------
=
DF 2 x 120 x 3.4 x 30
104
---------------------------------------------------3.4 x 30
13.26
---------------------7.7 %===
138D
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Revision: 21-Mar-13 7Document Number: 40025
For technical questions, contact: tantalum@vishay.com
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PERFORMANCE CHARACTERISTICS (CONTINUED)
7. Leakage Current: Measurements shall be made at the
applicable rated working voltage at + 25 °C ± 5 °C
through application of a steady source of power, such
as a regulated power supply. The total resistance in
series with each capacitor shall be between 1000 and
10 000 . The voltage shall be applied to the capacitor
for 5 min before making the leakage current
measurement.
7.1 The maximum leakage current for any capacitor shall
not exceed the value in microamperes listed in the
Standard and Extended Ratings Table for each
capacitor.
Note
• Leakage current varies with applied voltage. See graph below for
the appropriate adjustment factor.
8. Low Temperature Impedance: The impedance of any
capacitor at - 55 °C at 120 Hz, shall not exceed the
values given in the Standard and Extended Ratings
tables.
9. Life Test: Capacitors are capable of withstanding a
2000 h life test at a temperature of + 85 °C or + 125 °C
at the applicable rated DC working voltage
10. High Frequency Vibration: Capacitors shall with
stand vibration from 10 Hz to 2000 Hz at 20 g when
tested.
11. Lead Pull Test: Capacitors shall withstand a lead
tensile stress of 3 pounds (13.2 N) for 30 s, applied
axially
12. Marking: Capacitors shall be marked with Sprague®
and/or the Sprague trademark 2, the Sprague type
(138D); rated capacitance and tolerance (the tolerance
shall be coded, using the list shown in How to Order);
rated DC working voltage at + 85 °C; the standard EIA
date code of manufacture.
GUIDE TO APPLICATION
1. Ripple Current: All capacitors will withstand rms
ripple currents as listed for each capacitor.
1.1 The RMS ripple current rating is independent of
temperature or frequency within the following
limitations:
1.1.1 At frequencies of less than 120 Hz, the rated RMS
ripple current must be multiplied by the factors shown:
1.1.2 The sum of the peak AC voltage plus the DC voltage
shall not exceed the DC working voltage of the
capacitor.
1.1.3 The sum of the negative peak AC voltage, plus the
applied DC voltage shall not allow a voltage reversal.
2. Cleaning wiring boards with type 138D capacitors:
Customary cleaning solvents used in the electronics
industry at present will not affect Type 138D
capacitors. However, the use of ultrasonic cleaning
techniques is not recommended under any
circumstances.
3. Apparent Capacitance: Note that in timing circuit
applications, the circuit designer must take into
account two important variables which affect any
electrolytic capacitor. These are the internal leakage
resistance of the capacitor and its dielectric
absorption, which will depend on the elapsed time
since the capacitor was last energized. In applications
where electrolytic capacitors are subjected to DC
energy, or in effect, extremely low frequencies, the
value of the apparent capacitance will be somewhat
higher than that which is measured at 120 Hz.
4. No Reverse Voltage: The application of reverse
voltage to these capacitors will cause internal
damage. The resulting damage will lead to immediate
or delayed failure of the unit. This will take the form of
a catastrophic short circuit with possible expulsion of
the electrolyte.
LEAKAGE AS A FUNCTION OF VOLTAGE
AND TEMPERATURE
1.0
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.08
0.07
0.06
0.05
0.04
0.03
0.02
0.01
0.008
0.007
0.006
0.005
0.004
0.003
0.002
0.001
LEAKAGE CURRENT FACTOR
0
PERCENT OF RATED VOLTAGE
10 3020 9040 50 60 70 80 100
FREQUENCY IN Hz
25 50 60 100
0.36 0.59 0.65 0.88
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Revision: 02-Oct-12 1Document Number: 91000
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