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1N957B Datasheet PDF : 2 Pages
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CE
CHENYI ELECTRONICS
1N957 THRU 1N978
0.5W SILICON PLANAR ZENER DIODES
1N957…1N978 SILICON PLANAR ZENER DIODES
Type
1N957
1N958
1N959
1N960
1N961
1N962
1N963
1N964
1N965
1N966
1N967
1N968
1N969
1N970
1N971
1N972
1N973
1N974
1N975
1N976
1N977
1N978
Zener Voltage Range3)
Maximum
zener
impedence1)
VZNOM
IZT
ZZT
ZZK
IZK
V
mA
mA
6.8
18.5
4.5
1
7.5
16.5
8.2
15
0.5
5.5
9.1
14
10
12.5
700
11
11.5
5
12
10.5
11.5
13
9.5
13
15
8.5
16
16
7.8
17
18
7
21
20
6.2
25
22
5.6
29
750
0.25
24
5.2
33
27
4.6
41
30
4.2
49
33
3.8
58
1000
36
3.4
70
39
3.2
80
43
3
93
47
2.7
105
1500
51
2.5
125
Typical
Tempetature
coefficient
%/
0.050
0.058
0.062
0.068
0.075
0.076
0.077
0.079
0.082
0.083
0.085
0.086
0.087
0.088
0.090
0.091
0.092
0.093
0.094
0.095
0.095
0.096
Maximum Reverse
Leakage Current
IR 2)
Test-Voltage
suffix A suffix B
A
V
V
150
4.9
5.2
75
5.4
5.7
50
5.9
6.2
10
6.6
6.9
7.2
7.6
5
8
8.4
8.6
9.1
9.4
9.9
10.8
11.4
11.5
12.2
13
13.7
14.4
15.2
15.8
16.7
17.3
18.2
5
19.4
20.6
21.6
22.8
23.8
25.1
25.9
27.4
28.1
29.7
31
32.7
33.8
35.8
36.7
38.8
Maximum
Regulator
Current
IZM 2)
mA
47
42
38
35
32
28
26
24
21
19
17
15
14
14
11
10
9.0
8.5
7.8
7.0
6.4
5.9
Notes:
(1)The Zener impedance is derived from the 1kHz Ac voltage which results when an AC current having an RMS value equal to 10%
of the Zener current (IZT) is suprimposed on IZT Zener impedance is measured at two points to insure a sharp knee on the
breakdown curve and to eliminate unstable units.
(2)Valid provided that leads are kept at ambient temperature at a distance of 8mm from case
(3) Measured with device junction in thermal equilibrium.
Copyright @ 2000 SHANGHAI CHENYI ELECTRONICS CO.,LTD
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