1N5221B through 1N5281B Series
ELECTRICAL CHARACTERISTICS (TA = 25ºC unless otherwise noted, VF = 1.1 V Max @ IF = 200mA for all types)
(Note 7.)
(Note 8.)
Zener Voltage
VZ (Volts)
Nom
Zener Impedance
Leakage Current
IR @ VR
θVZ
@ IZT
(mA)
ZZT @ IZT
ZZK @ IZK
(Note 9.)
Device
Device
Min
Max
(mA)
(Volts)
(%/ºC)
Marking
(Ω)
(Ω)
(µA)
(Note 6.)
1N5236B
1N5236B
7.125
7.79
7.5
8.2
8.7
9.1
10
11
12
13
14
15
16
17
18
19
20
22
24
25
27
28
30
33
36
39
43
47
51
56
60
62
7.875
8.61
20
20
20
20
20
20
20
9.5
9
6
8
500
500
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
600
700
700
800
900
1000
1100
1300
1400
1400
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
3
6
+0.058
+0.062
+0.065
+0.068
+0.075
+0.076
+0.077
+0.079
+0.082
+0.082
+0.083
+0.084
+0.085
+0.086
+0.086
+0.087
+0.088
+0.089
+0.09
1N5237B 1N5237B
3
6.5
6.5
7
1N5238B
1N5239B
1N5238B
1N5239B
8.265
8.645
9.5
9.135
9.555
10.5
8
3
10
17
22
30
13
15
16
17
19
21
23
25
29
33
35
41
44
49
58
70
80
93
105
125
150
170
185
3
1N5240B 1N5240B
1N5241B 1N5241B
1N5242B 1N5242B
3
8
10.45
11.4
11.55
12.6
2
8.4
9.1
9.9
10
11
12
13
14
14
15
17
18
19
21
21
23
25
27
30
33
36
39
43
46
47
1
1N5243B
1N5244B
1N5243B
1N5244B
12.35
13.3
13.65
14.7
0.5
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
1N5245B 1N5245B
1N5246B 1N5246B
14.25
15.2
15.75
16.8
8.5
7.8
7.4
7
1N5247B
1N5248B
1N5249B
1N5247B
1N5248B
1N5249B
16.15
17.1
17.85
18.9
18.05
19
19.95
21
6.6
6.2
5.6
5.2
5
1N5250B 1N5250B
1N5251B
1N5252B
1N5253B
1N5254B
1N5255B
1N5256B
1N5257B
1N5258B
1N5259B
1N5260B
1N5261B
1N5262B
1N5263B
1N5264B
1N5265B
1N5251B
1N5252B
1N5253B
1N5254B
1N5255B
1N5256B
1N5257B
1N5258B
1N5259B
1N5260B
1N5261B
1N5262B
1N5263B
1N5264B
1N5265B
20.9
23.1
22.8
25.2
23.75
25.65
26.6
26.25
28.35
29.4
4.6
4.5
4.2
3.8
3.4
3.2
3
+0.091
+0.091
+0.092
+0.093
+0.094
+0.095
+0.095
+0.096
+0.096
+0.097
+0.097
28.5
31.5
31.35
34.2
34.65
37.8
37.05
40.85
44.65
48.45
53.2
40.95
45.15
49.35
53.55
58.8
2.7
2.5
2.2
2.1
2
57
63
58.9
65.1
6. TOLERANCE AND TYPE NUMBER DESIGNATION (VZ)
The type numbers listed have a standard tolerance on the nominal zener voltage of ±5%.
7. ZENER VOLTAGE (VZ) MEASUREMENT
Nominal zener voltage is measured with the device junction in the thermal equilibrium at the lead temperature (TL) at 30°C
±1°C and 3/8” lead length.
8. ZENER IMPEDANCE (ZZ) DERIVATION
ZZT and ZZK are measured by dividing the AC voltage drop across the device by the AC current applied. The specified limits
are for IZ(AC) = 0.1 IZ(DC) with AC frequency = 60Hz.
9. TEMPERATURE COEFFICIENT (θVZ
)
Test conditions for temperature coefficient are as follows:
A. IZT = 7.5mA, T1 = 25°C, T2 = 125°C (1N5221B through 1N5242B)
B. IZT = Rated IZT, T1 = 25°C, T2 = 125°C (1N5243B through 1N5281B)
Device to be temperature stabilized with current applied prior to reading breakdown voltage at the specified ambient
temperature.
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