Note:
(1) Valid provided that leads are kept at ambient temperature at a distance of 8 mm from case.
Features
1N957 THRU 1N978
SILICON PLANAR ZENER DIODES
Silicon Planar Zener Diodes
Standard Zener voltage tolerance is 20%. Add suffix A
for 10% tolerance and suffix B for 5% tolerance.
Other tolerances, non standard and higher Zener voltages
upon request.
Absolute Maximum Ratings
(T
a
=25 )
1
Symbols
Values
Units
Zener current see Table "Characteristics"
Power dissipation at T
amb
=50
P
tot
400
1)
mW
Junction temperature
T
j
175
Storage temperature range
T
S
-65 to +175
Note:
(1) Valid provided that leads are kept at ambient temperature at a distance of 8 mm from case.
Characteristics
at
T
amb
=25
Symbols
Min.
Typ.
Max.
Units
Thermal resistance
junction to ambient Air
R
thA
-
-
0.3
1)
K/mW
Forward voltage at I
F
=200mA
V
F
-
-
1.5
V
DIMENSIONS
DIM
inches
mm
Note
Min.
Max.
Min.
Max.
A
-
0.154
-
3.9
B
-
0.075
-
1.9
C
-
0.020
-
0.52
D
1.083
-
27.50
-
Notes:
(1) Test with pulse tp=20ms.
(2) Valid provided that leads are kept at ambient temperature at a distance of 8 mm from case.
Type
Zener voltage range
1)
Dynamic resistance
Typical
temperature
coefficient
Maximum reverse leakage currrent
Maximum
regulator
current
V
znom
I
ZT
r
zjT
and r
zjk
at I
zk
I
R
2)
Test - Voltage
Suffix A Suffix B
I
ZM
V
mA
mA
(%/ )
uA
V
V
mA
1N957
6.8
18.5
4.5
700
1.0
0.050
150
4.9
5.2
47
1N958
7.5
16.5
5.5
700
0.5
0.058
75
5.4
5.7
42
1N959
8.2
15
6.5
700
0.5
0.062
50
5.9
6.2
38
1N960
9.1
14
7.5
700
0.5
0.068
25
6.6
6.9
35
1N961
10
12.5
8.5
700
0.25
0.075
10
7.2
7.6
32
1N962
11
11.5
9.5
700
0.25
0.076
5
8.0
8.4
28
1N963
12
10.5
11.5
700
0.25
0.077
5
8.6
9.1
26
1N964
13
9.5
13
700
0.25
0.079
5
9.4
9.9
24
1N965
15
8.5
16
700
0.25
0.082
5
10.8
11.4
21
1N966
16
7.8
17
700
0.25
0.083
5
11.5
12.2
19
1N967
18
7.0
21
750
0.25
0.085
5
13.0
13.7
17
1N968
20
6.2
25
750
0.25
0.086
5
14.4
15.2
15
1N969
22
5.6
29
750
0.25
0.087
5
15.8
16.7
14
1N970
24
5.2
33
750
0.25
0.088
5
17.3
18.2
13
1N971
27
4.6
41
750
0.25
0.090
5
19.4
20.6
11
1N972
30
4.2
49
1000
0.25
0.091
5
21.6
22.8
10
1N973
33
3.8
58
1000
0.25
0.092
5
23.8
25.1
9.0
1N974
36
3.4
70
1000
0.25
0.093
5
25.9
27.4
8.5
1N975
39
3.2
80
1000
0.25
0.094
5
28.1
29.7
7.8
1N976
43
3.0
93
1500
0.25
0.095
5
31.0
32.7
7.0
1N977
47
2.7
105
1500
0.25
0.095
5
33.8
35.8
6.4
1N978
51
2.5
125
1500
0.25
0.096
5
36.7
38.8
5.9
2
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