1N5221B(UR)-1N5281B(UR)
SILICON ZENER DIODES
High-reliability discrete products
and engineering services since 1977
Max Zener Voltage
Temp. Coeff.
(A&B Suffix Only)
Max Reverse Leakage Current
Max Zener Impedance
A&B Suffix Only(2)
A, B, & D Suffix
Non Suffix
Test
Nominal
Current
Only
Zener Voltage
IZT
IR
µA
VR
Volts
IR @ VR Used For
Suffix A
αVZ (%/°C)(3)
VZ @ IZT
Volts
Part Number (1)
mA
@
ZZT @ IZT
ZZT @ IZK=0.25mA
µA
Ohms
Ohms
A
B,C&D
1N5261B
1N5262B
1N5263B
1N5264B
1N5265B
1N5266B
1N5267B
1N5268B
1N5269B
1N5270B
1N5271B
1N5272B
1N5273B
1N5274B
1N5275B
47
51
56
60
62
68
75
82
87
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
0.90
105
125
150
170
185
230
270
330
370
400
500
750
900
1100
1300
1000
1100
1300
1400
1400
1600
1700
2000
2200
2300
2600
3000
4000
4500
4500
0.1
34
37
41
44
45
49
53
59
65
66
72
80
86
94
101
36
39
43
46
47
52
56
62
68
69
76
84
91
99
106
10
10
10
10
10
10
10
10
10
10
10
10
10
10
10
+0.095
+0.096
+0.096
+0.097
+0.097
+0.097
+0.098
+0.098
+0.099
+0.099
+0.110
+0.110
+0.110
+0.110
+0.110
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
91
100
110
120
130
140
1N5276B
1N5277B
1N5278B
1N5279B
1N5280B
1N5281B
150
160
170
180
190
200
0.85
0.80
0.74
0.68
0.66
0.65
150
170
190
2200
2400
2500
5000
5500
5500
6000
6500
7000
0.1
0.1
0.1
0.1
0.1
0.1
108
116
123
130
137
144
114
122
129
137
144
152
10
10
10
10
10
10
+0.110
+0.110
+0.110
+0.110
+0.110
+0.110
NOTE 1: The electrical characteristics are measured after allowing the device to stabilize for 20 seconds when mounted with a 3/8” minimum lead length from the case.
NOTE 2: The zener impedance is derived from the 60HZ ac voltage, which results when an ac current having an r.m.s. value equal to 10% of the DC zener current
(IZT or I ZK) is superimposed on IZT or I ZK. Zener impedance is measured at two points to insure a sharp knee on the breakdown curve, thereby eliminating unstable units.
NOTE 3: Temperature coefficient (αVZ). Test conditions for temperature coefficient are a follows:
a.
IZT = 7.5 mA, T1 = 25°C,
T2 = 125°C (1N5221A, thru 1N5242A, B.)
b.
IZT = Rated IZT, T1 = 25°C,
T2 = 125°C (1N5243A, B thru 1N5281A, B.)
Device to be temperature stabilized with current applied prior to reading breakdown voltage at the specified ambient temperature.
Rev. 20190114