1N5221B through 1N5281B Series
ELECTRICAL CHARACTERISTICS (TA = 25ºC unless otherwise noted, VF = 1.1 V Max @ IF = 200mA for all types)
(Note 11.)
(Note 12.)
Zener Voltage
VZ (Volts)
Nom
Zener Impedance
Leakage Current
IR @ VR
θVZ
@ IZT
(mA)
ZZT @ IZT
ZZK @ IZK
(Note 13.)
Device
Device
Min
Max
(mA)
(Volts)
(%/ºC)
Marking
(Ω)
(Ω)
(µA)
(Note 10.)
1N5266B
1N5267B
1N5268B
1N5269B
1N5270B
1N5271B
1N5272B
1N5273B
1N5274B
1N5275B
1N5276B
1N5277B
1N5278B
1N5279B
1N5280B
1N5281B
1N5266B
1N5267B
1N5268B
1N5269B
1N5270B
1N5271B
1N5272B
1N5273B
1N5274B
1N5275B
1N5276B
1N5277B
1N5278B
1N5279B
1N5280B
1N5281B
64.6
71.25
77.9
82.65
86.45
95
68
75
71.4
78.75
86.1
91.35
95.55
105
1.8
1.7
230
270
1600
1700
2000
2200
2300
2600
3000
4000
4500
4500
5000
5500
5500
6000
6500
7000
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
0.1
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
52
56
+0.097
+0.098
+0.098
+0.099
+0.099
+0.11
+0.11
+0.11
+0.11
+0.11
+0.11
+0.11
+0.11
+0.11
+0.11
+0.11
82
1.5
330
62
87
1.4
370
68
91
1.4
400
69
100
110
120
130
140
150
160
170
180
190
200
1.3
500
76
104.5
114
115.5
126
1.1
750
84
1
900
91
123.5
133
136.5
147
0.95
0.9
1100
1300
1500
1700
1900
2200
2400
2500
99
106
114
122
129
137
144
152
142.5
152
157.5
168
0.85
0.8
161.5
171
178.5
189
0.74
0.68
0.66
0.65
180.5
190
199.5
210
10. TOLERANCE AND TYPE NUMBER DESIGNATION (VZ)
The type numbers listed have a standard tolerance on the nominal zener voltage of ±5%.
11. 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.
12. 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.
13. 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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