Document
1SMA4738A thru 1SMA4764A
Surface Mount Zener Diodes Vz Range:8.2 to 100V Power Dissipation:1W
Features
■ Silicon power zener diodes ■ For use in stabilizing and clipping circuits
with high power rating. ■ Suffix”A” for ±5% tolerance.
Package: DO-214AC (SMA)
Maximum Rating (TA=25°C unless otherwise specified)
Parameter
Zener Current Power Dissipation at TL=70°C JunctionTemperature
Storage Temperature Range
Symbol
Ptot TJ TS
Value
See Next Page 1
150
-55to+150
Unit
W °C °C
Typical Thermal Resistance (Note1)
RθJA RθJL
125 30
Note1: Thermal resistance from junction to ambient & lead, mounted on PCB with 5.0×5.0mm copper pads
°C/W °C/W
Electrical Charateristics (TA=25°C unless otherwise specified)
Part number
1SMA4738A 1SMA4739A 1SMA4740A 1SMA4741A 1SMA4742A 1SMA4743A 1SMA4744A 1SMA4745A 1SMA4746A 1SMA4747A 1SMA4748A 1SMA4749A
Device Marking
Code
Nominal
Zener Voltage at
IZT Vz (Volts)(1)
Test Current IZT(mA)
Maximum Zener
Impedance(2)
ZZT at IZT ZZK At IZK (Ω) (Ω) (mA)
Maximum
Reverse
Leakage Current
IR(uA)
at VR (Volts)
4738A
8.2
31
4.5
700 0.5
10
6
4739A
9.1
28
5.0
700 0.5
10
7
4740A
10
25
7
700 0.25 10
7.6
4741A
11
23
8
700 0.25
5
8.4
4742A
12
21
9
700 0.25
5
9.1
4743A
13
19
10
700 0.25
5
9.9
4744A
15
17
14
700 0.25
5
11.4
4745A
16
15.5
16
700 0.25
5
12.2
4746A
18
14
20
750 0.25
5
13.7
4747A
20
12.5
22
750 0.25
5
15.2
4748A
22
11.5
23
750 0.25
5
16.7
4749A
24
10.5
25
750 0.25
5
18.2
Maximum Surge
Current(3)
IRM(mApk)
Maximum Regulator Current(4)
at TA=50°C
IZM(mA)
550 122 500 110 454 100 414 83 380 76 344 69 304 61 285 57 250 50 225 45 205 41 190 38
1/3
1SMA4738A thru 1SMA4764A
Surface Mount Zener Diodes Vz Range:8.2 to 100V Power Dissipation:1W
Electrical Charateristics (TA=25°C unless otherwise specified)
Part number 1SMA4750A
Device
Marking Code
Nominal Zener
Voltage at IZT Vz (Volts)(1)
Test
Current IZT(mA)
Maximum Zener
Impedance(2)
ZZT at IZT ZZK At IZK (Ω) (Ω) (mA)
Maximum
Reverse
Leakage
Current
IR(uA)
at VR (Volts)
4750A
27
9.5
35
750 0.25
5
20.6
Maximum Surge
Current(3)
IRM(mApk)
170
Maximum Regulator Current(4)
at TA=50°C IZM(mA)
34
1SMA4751A
4751A
30
8.5
40
1000 0.25
5
22.8
150
30
1SMA4752A
4752A
33
7.5
45
1000 0.25
5
25.1
135
27
1SMA4753A
4553A
36
7.0
50
1000 0.25
5
27.4
125
25
1SMA4754A
4754A
39
6.5
60
1000 0.25
5
29.7
115
23
1SMA4755A
4755A
43
6.0
70
1500 0.25
5
32.7
110
22
1SMA4756A
4756A
47
5.5
80
1500 0.25
5
35.8
95
19
1SMA4757A
4757A
51
5.0
95
1500 0.25
5
38.8
90
18
1SMA4758A
4758A
56
4.5
110 2000 0.25 5
42.6
80
16
1SMA4759A
4759A
62
4.0
125 2000 0.25 5
47.1
70
14
1SMA4760A
4760A
68
3.7
150 2000 0.25 5
51.7
65
13
1SMA4761A
4761A
75
3.3
175 2000 0.25 5
56.0
60
12
1SMA4762A
4762A
82
3.0
200 3000 0.25 5
62.2
55
11
1SMA4763A
4763A
91
2.8
250 3000 0.25 5
69.2
50
10
1SMA4764A
4764A
100
2.5
350 3000 0.25 5
76
45
9
Notes: (1) Measured under thermal equilibrium and DC test conditions , Standard voltage tolerance is 10%, suffix A±5%.
(2) The Zener impedance is derived from the 1KHZ AC voltage which results when an AC current having an RMS value equal to 10% of the Zener current (IZT or IZK) is superimposed on IZT or IZK. Zener impedance is measure at two points to insure a sharp knee on the breakdown curve and to eliminate unstable units. (3) Maximum surge current: Surge current is a non-repetitive,8.3ms pulse width square wave or equivalent sine-wave superimposed on IZT per JEDEC method. (4) Valid provided that electrodes at a distance of 10 mm from case are kept at ambient temperature.
2/3
1SMA4738A thru 1SMA4764A
Surface Mount Zener Diodes Vz Range:8.2 to 100V Power Dissipation:1W
Ratings and Characteristic Curves (at 25°C unless otherwise specified)
Package Outline Dimensions
SMA in inches(millimeters)
www.goodarksemi.com
3/3 Doc.US1SMA47xxAxGD4.0
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