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6
Zener Diodes 1W 1SMA4728A to 1SMA4764, SMA
Nominal
Zener
Voltage
Test
Current
Maximum Zener
Impedance
Maximum Reverse
Leakage Current
Maximum DC
Zener
Current
Maximum
Surge
Current
VZ@IZT IZT ZZT@IZT ZZK@IZK IZK IR @ VR IZM IRM(2)
Type No.
（V） （mA） (Ω) (Ω) (mA) (uA) (mA) (mA) (mApk)
1SMA4728A 3.3 76.0 10 400 1.0 100 1.0 276 1380
1SMA4729A 3.6 69.0 10 400 1.0 100 1.0 252 1260
1SMA4730A 3.9 58.0 9.0 400 1.0 50 1.0 234 1190
1SMA4731A 4.3 58.0 9.0 400 1.0 10 1.0 217 1070
1SMA4732A 4.7 53.0 8.0 500 1.0 10 1.0 193 970
1SMA4733A 5.1 49.0 7.0 500 1.0 10 1.0 178 890
1SMA4734A 5.6 45.0 5.0 500 1.0 10 2.0 162 810
1SMA4735A 6.2 41.0 2.0 700 1.0 10 3.0 146 730
1SMA4736A 6.8 37.0 3.5 700 1.0 50 4.0 133 660
1SMA4737A 7.5 34.0 4.0 700 0.5 50 5.0 121 605
1SMA4738A 8.2 31.0 4.5 700 0.5 50 6.0 110 550
1SMA4739A 9.1 28.0 5.0 700 0.5 50 7.0 100 500
1SMA4740A 10 25.0 7.0 700 0.25 50 7.6 91 454
1SMA4741A 11 23.0 8.0 700 0.25 50 8.4 83 414
1SMA4742A 12 21.0 9.0 700 0.25 5.0 9.1 76 380
1SMA4743A 13 19.0 10 700 0.25 5.0 9.9 69 144
1SMA4744A 15 17.0 14 700 0.25 5.0 11.4 61 305
1SMA4745A 16 15.5 16 700 0.25 5.0 12.2 57 285
1SMA4746A 18 14.0 20 750 0.25 5.0 13.7 50 250
1SMA4747A 20 12.5 22 750 0.25 5.0 15.2 45 225
1SMA4748A 22 11.5 23 750 0.25 5.0 16.7 41 205
1SMA4749A 24 10.5 25 750 0.25 5.0 18.2 38 190
1SMA4750A 27 9.5 35 750 0.25 5.0 20.6 34 170
1SMA4751A 30 8.5 40 1000 0.25 5.0 22.8 30 150
1SMA4752A 33 7.5 45 1000 0.25 5.0 25.1 27 135
1SMA4753A 36 7.0 50 1000 0.25 5.0 27.4 25 125
1SMA4754A 39 6.5 60 1000 0.25 5.0 29.7 23 115
1SMA4755A 43 6.0 70 1500 0.25 5.0 32.7 22 110
1SMA4756A 47 5.5 80 1500 0.25 5.0 35.8 19 95
1SMA4757A 51 5.0 95 1500 0.25 5.0 38.8 18 90
1SMA4758A 56 4.5 110 2000 0.25 5.0 42.6 16 80
1SMA4759A 62 4.0 125 2000 0.25 5.0 47.1 14 70
1SMA4760A 68 3.7 150 2000 0.25 5.0 51.7 13 65
1SMA4761A 75 3.3 175 2000 0.25 5.0 56.0 12 60
1SMA4762A 82 3.0 200 3000 0.25 5.0 62.2 11 55
1SMA4763A 91 2.8 2.5 3000 0.25 5.0 69.2 10 50
1SMA4764A 100 2.5 350 3000 0.25 5.0 76.0 9.0 45
SMA
Dim Millimeters Inches
Min Max Min Max
A 3.99 4.50 0.157 0.177
B 2.54 2.79 0.100 0.110
C 1.25 1.65 0.049 0.065
D 0.152 0.305 0.006 0.012
E 4.93 5.28 0.194 0.208
F ---- 0.203 ---- 0.008
G 1.98 2.29 0.078 0.090
H 0.76 1.52 0.030 0.060