Data Sheet
½ Watt
ZENER DIODES (2.4V to 200V)
NOTES: 1. For 10% Tolerance on Zener Voltage, Specify Suffix A. For 5% Tolerance,
Specify Suffix B. (Example: 1N5230B = 4.7V +/- 5%)
2. TA = 25°C unless otherwise specified. Measurements made at Thermal Equilibrium.
Lead Length = .375". Thermal Resistance of Heat Sink = 30°C / W, VF = 1.1V Max. @ IF = 200mA
Electrical Characteristics @ 25OC.
Max. Zener Impedance
Max. Reverse
Max.
Part #
Jedec Type #
Nominal Zener
Voltage,
Test
Current
IZT (mA)
Zener Voltage
Leakage Current @ VR
Z
@ IZT ZZK @ IZK = 0.25mA
Temp. Coeff. (% /oC)
IR (µA)
VZ (V)
ZT (Ω)
(Ω)
VR (V)
1N5256A or B
1N5257A or B
1N5258A or B
1N5259A or B
1N5260A or B
1N5261A or B
1N5262A or B
1N5263A or B
1N5264A or B
1N5265A or B
1N5266A or B
1N5267A or B
1N5268A or B
1N5269A or B
1N5270A or B
1N5271A or B
1N5272A or B
1N5273A or B
1N5274A or B
1N5275A or B
1N5276A or B
1N5277A or B
1N5278A or B
1N5279A or B
1N5280A or B
1N5281A or B
30
33
4.2
3.8
3.4
3.2
3.0
2.7
2.5
2.2
2.1
2.0
1.8
1.7
1.5
1.4
1.4
1.3
1.1
1.0
0.95
0.9
0.85
0.8
0.74
0.68
0.66
0.65
49
58
600
700
.1
.1
.1
.1
.1
.1
.1
.1
.1
.1
.1
.1
.1
.1
.1
.1
.1
.1
.1
.1
.1
.1
.1
.1
.1
.1
23
25
+ 0.091
+ 0.092
+ 0.093
+ 0.094
+ 0.095
+ 0.095
+ 0.096
+ 0.096
+ 0.097
+ 0.097
+ 0.097
+ 0.098
+ 0.098
+ 0.099
+ 0.099
+ 0.11
36
70
700
27
39
80
93
800
900
30
43
33
47
105
125
150
170
185
230
270
330
370
400
500
750
900
1100
1300
1500
1700
1900
2200
2400
2500
1000
1100
1300
1400
1400
1600
1700
2000
2200
2300
2600
3000
4000
4500
4500
5000
5500
5500
6000
6500
7000
36
51
39
56
43
60
46
62
47
68
52
75
56
82
62
87
68
91
69
100
110
120
130
140
150
160
170
180
190
200
76
84
+ 0.11
91
+ 0.11
99
+ 0.11
106
114
122
129
137
144
152
+ 0.11
+ 0.11
+ 0.11
+ 0.11
+ 0.11
+ 0.11
+ 0.11
Page 12-4
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