SILICON 2.0 Watt ZENER DIODES
WWW.Microsemi .COM
SCOTTSDALE DIVISION
SMBG4728 thru SMBG4764A, e3
SMBJ4728 thru SMBJ4764A, e3
SMBG(J)4728–4764A, e3
DESCRIPTION APPEARANCE
The SMBJ4728A-4764A and SMBG4728A-4764A series of surface mount
2.0 watt Zeners provides voltage regulation in a selection from 3.3 to 100
volts with different tolerances as identified by suffix letter on the part
number as well as RoHS Compliant with an e3 suffix. This surface mount
product series with lower thermal resistance features is equivalent to the
JEDEC registered 1N4728 thru 1N4764A with identical electrical
characteristics except it is rated at 2.0 W instead of 1.0 W. It is available
in J-bend design (SMBJ) with the DO-214AA package for greater PC
board mounting density or in Gull-wing design (SMBG) in the DO-215AA
for visible solder connections. Microsemi also offers numerous other
Zener products to meet higher an d lower power applications.
NOTE: All SMB series are equival en t
to prior SMS package identifications.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
FEATURES APPLIC ATIONS / BENEFITS
• Surface mount equivalent to 1N4728 to 1N 4764A
• Ideal for high-density and low-profile mounting
• Zener voltage available 3.3V to 200V
• Standard voltage tolerances are plus/minus 5% with
A suffix and 10 % with no suffix identific ation
• Tight tolerances available in plus or minus 2% or 1%
with C or D suffix respectively
• Options for screening in accordance with MIL-PRF-
19500 for JAN, JANTX, and JANTXV are available
by adding MQ, MX, or MV prefixes respectively to
part numbers.
• RoHS compliant devices available by adding an e3
suffix.
• Regulates voltage over a broad op erating current
and temperature range
• Wide selection from 3.3 to 100 V
• Popular DO-214AA or DO-215AA packages and
footprints for either high densit y J-bend or Gull-wing
designs for visible solder joints
• Nonsensitive to ESD per MIL-STD-750 Method
1020
• Moisture classification: Level 1 per IPC/JED EC J-
STD-020B with no dry pack required
MAXIMUM RAT ING S MECHANICAL AND PACKAGING
• Power dissipation at 25ºC: 2.0 watts (also see
derating in Figure 1).
• Operating and Storage temperature: -65ºC to
+150ºC
• Thermal Resistance: 35 ºC/W junction to le ad, or
100ºC/W junction to ambient when mounted on FR4
PC board (1oz Cu) with recommended footprint
(see last page)
• Steady-State Power: 2 watts at TL < 80oC, or 1.25
watts at TA = 25ºC when mounted on FR4 PC boar d
with recommended footprint (also see Figure 1)
• Forward voltage @200 mA: 1.2 volts (maximum)
• Solder Temperatures: 260 ºC for 10 s (maximum)
• CASE: Void-free transfer molded thermosetting
epoxy body meeting UL94V-0
• TERMINALS: Gull-wing or C-bend (modified J-
bend) leads, tin-lead plated or RoHS compliant
annealed matte-tin plating solderable per MIL-STD-
750, method 2026
• POLARITY: Cathode indicated by band. Diode to
be operated with the banded end positive with
respect to opposite end for Zener regulation
• MARKING: Includes part number without prefix
(e.g. 4728A, 4728Ae3, 4734C, 4764D, etc.)
• TAPE & REEL option: Standard per EIA-481-1-A
with 12 mm tape, 750 per 7 inch reel or 2500 per 13
inch reel (add “TR” suffix to part number)
• WEIGHT: 0.1 grams
• See package dimensions on l ast page
Microsemi
Scottsdale Division Page 1
Copyright © 2007
6-20-2007 REV E 8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
SILICON 2.0 Watt ZENER DIODES
WWW.Microsemi .COM
SCOTTSDALE DIVISION
SMBG4728 thru SMBG4764A, e3
SMBJ4728 thru SMBJ4764A, e3
SMBG(J)4728–4764A, e3
ELECTRICAL CHARACTERISTICS*
JEDEC
TYPE NUMBER
(Note 1)
ZENER
VOLTAGE
(Vz)
(Note 4)
TEST
CURRENT
(IZT)
MAXIMUM
DYNAMIC
IMPEDANCE
(ZZT @ IZT)
(Note 2)
MAXIMUM
REVERSE
CURRENT
(IR @ VR)
TEST
VOLTAGE
(VR)
MAXIMUM
REGULATOR
CURRENT
(IZM)
TA = 50oC
MAXIMUM
KNEE
IMPEDANCE
(ZZK @ IZK)
(Note 2)
TEST
CURRENT
(IZK)
MAXIMUM
(SURGE)
CURRENT
(IS)
(Note 3)
GULL-WING
LEAD C-BEND
(MOD. “J”) VOLTS mA OHMS μA VOLTS mA OHMS mA mA
SMBG4728A
SMBG4729A
SMBG4730A
SMBG4731A
SMBJ4728A
SMBJ4729A
SMBJ4730A
SMBJ4731A
3.3
3.6
3.9
4.3
76
69
64
58
10
10
9
9
100
100
50
10
1
1
1
1
276
252
234
217
400
400
400
400
1.0
1.0
1.0
1.0
1380
1260
1190
1070
SMBG4732A
SMBG4733A
SMBG4734A
SMBG4735A
SMBJ4732A
SMBJ4733A
SMBJ4734A
SMBJ4735A
4.7
5.1
5.6
6.2
53
49
45
41
8
7
5
2
10
10
10
10
1
1
2
3
193
178
162
146
500
550
600
700
1.0
1.0
1.0
1.0
970
890
810
730
SMBG4736A
SMBG4737A
SMBG4738A
SMBG4739A
SMBJ4736A
SMBJ4737A
SMBJ4738A
SMBJ4739A
6.8
7.5
8.2
9.1
37
34
31
28
3.5
4.0
4.5
5.0
10
10
10
10
4
5
6
7
133
121
110
100
700
700
700
700
1.0
0.5
0.5
0.5
660
605
550
500
SMBG4740A
SMBG4741A
SMBG4742A
SMBG4743A
SMBJ4740A
SMBJ4741A
SMBJ4742A
SMBJ4743A
10
11
12
13
25
23
21
19
7
8
9
10
10
5
5
5
7.6
8.4
9.1
9.9
91
83
76
69
700
700
700
700
0.25
0.25
0.25
0.25
454
414
380
344
SMBG4744A
SMBG4745A
SMBG4746A
SMBG4747A
SMBJ4744A
SMBJ4745A
SMBJ4746A
SMBJ4747A
15
16
18
20
17
15.5
14
12.5
14
16
20
22
5
5
5
5
11.4
12.2
13.7
15.2
61
57
50
45
700
700
750
750
0.25
0.25
0.25
0.25
304
285
250
225
SMBG4748A
SMBG4749A
SMBG4750A
SMBG4751A
SMBJ4748A
SMBJ4749A
SMBJ4750A
SMBJ4751A
22
24
27
30
11.5
10.5
9.5
8.5
23
25
35
40
5
5
5
5
16.7
18.2
20.6
22.8
41
38
34
30
750
750
750
1000
0.25
0.25
0.25
0.25
205
190
170
150
SMBG4752A
SMBG4753A
SMBG4754A
SMBG4755A
SMBJ4752A
SMBJ4753A
SMBJ4754A
SMBJ4755A
33
36
39
43
7.5
7.0
6.5
6.0
45
50
60
70
5
5
5
5
25.1
27.4
29.7
32.7
27
25
23
22
1000
1000
1000
1500
0.25
0.25
0.25
0.25
135
125
115
110
SMBG4756A
SMBG4757A
SMBG4758A
SMBG4759A
SMBJ4756A
SMBJ4757A
SMBJ4758A
SMBJ4759A
47
51
56
62
5.5
5.0
4.5
4.0
80
95
110
125
5
5
5
5
35.8
38.8
42.6
47.1
19
18
16
14
1500
1500
2000
2000
0.25
0.25
0.25
0.25
95
90
80
70
SMBG4760A
SMBG4761A
SMBG4762A
SMBG4763A
SMBJ4760A
SMBJ4761A
SMBJ4762A
SMBJ4763A
68
75
82
91
3.7
3.3
3.0
2.8
150
175
200
250
5
5
5
5
51.7
56.0
62.2
69.2
13
12
11
10
2000
2000
3000
3000
0.25
0.25
0.25
0.25
65
60
55
50
SMBG4764A SMBJ4764A 100 2.5 350 5 76.0 9 3000 0.25 45
*JEDEC Registere d Data
NOTES:
1. The JEDEC type numbers shown with an A suffix have a 5% tolerance on nominal zener voltage. No suffix signifies a 10% tolerance,
C signifies 2%, and D signifies 1% tolerance. Also add a P suffix for designating plastic construction (or G suffix for glass body). Add
an e3 suffix for RoHS compliant devices.
2. The Zener impedance is derived from the 60 Hz ac voltage that results when an ac current having an rms value equal to 10% of the dc
Zener current (IZT or IZK) is superimposed on IZT or IZK. Zener impedance is measured at two points to ensure a sharp knee on the
breakdown curve and eliminate unstable units. See MicroNote 202 for zener impedance variation with different operating currents.
3. The reverse surge current is measured at 25oC ambient using a square wave or equivalent half-sine wave pulse 1/120 second duration
superimposed on IZT.
4. Zener voltage (VZ) is measured at TL = 25ºC (+8, -2ºC) and 90 seconds after application of dc current.
Microsemi
Scottsdale Division Page 2
Copyright © 2007
6-20-2007 REV E 8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
SILICON 2.0 Watt ZENER DIODES
WWW.Microsemi .COM
SCOTTSDALE DIVISION
SMBG4728 thru SMBG4764A, e3
SMBJ4728 thru SMBJ4764A, e3
SMBG(J)4728–4764A, e3
GRAPHS
TEMPERATURE COEFFICIENT mV/oC
RATED POWER DISSIPATION - W
TL
TA on FR4
PC board
TL, LEAD TEMP. (oC) or NOMINAL ZENER VOLTAGE (VOLTS) FIGURE 3
T
A on FR4 PC Board FIGURE 2 Typical Capacitance vs. Voltage
FIGURE 1 Temp. Coeff. vs. Zener Voltage for Representative Types
Power Derating Curve
Microsemi
Scottsdale Division Page 3
Copyright © 2007
6-20-2007 REV E
PACKAGE DIMENSIO NS & PAD LAYOU T
SMBJ SMBG
A B C D E F K L
MIN .077 .160 .130 .205 .077 .235 .015 .030
MAX .083 .180 .155 .220 .104 .255 .030 .060
DIMENSIONS IN MILLIMETERS
MIN 1.96 4.06 3.30 5.21 1.95 5.97 .381 .760
MAX 2.10 4.57 3.94 5.59 2.65 6.48 .762 1.520
INCHES mm
A 0.320 8.13
B 0.085 2.16
C 0.110 2.79
INCHES mm
A .260 6.60
B .085 2.16
C .110 2.79
SMBG
SMBJ
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
