1N957B THRU 1N992B
www.centralsemi.com
SILICON ZENER DIODE
6.8 VOLTS THRU 200 VOLTS
500mW, 5% TOLERANCE
DESCRIPTION:
The CENTRAL SEMICONDUCTOR 1N957B Series
Silicon Zener Diode is a high quality voltage regulator
designed for use in industrial, commercial, entertainment
and computer applications.
DO-35 CASE
MAXIMUM RATINGS: (T =75°C)
Power Dissipation
Operating and Storage Junction Temperature
SYMBOL
UNITS
mW
°C
%
%
%
L
P
T , T
500
-65 to +200
D
J
stg
V
V
V
Tolerance: Part number with “B” suffix
Tolerance: Part number with “C” suffix
Tolerance: Part number with “D” suffix
5
2
1
Z
Z
Z
ELECTRICAL CHARACTERISTICS: (T =25°C) V =1.5V MAX @ I =200mA (for all types)
A
F
F
ZENER
MAXIMUM
REVERSE
CURRENT
MAXIMUM
ZENER
CURRENT
TEST
MAXIMUM ZENER
IMPEDANCE
VOLTAGE
CURRENT
V
@ I
ZT
TYPE
Z
MIN
NOM
MAX
I
Z
@ I
Ω
Z
@
I
I
@
V
I
ZT
ZT
ZT
ZK
ZK
R
R
V
ZM
V
V
V
mA
18.5
16.5
15.0
14.0
12.5
11.5
10.5
9.5
8.5
7.8
7.0
6.2
5.6
5.2
4.6
4.2
3.8
3.4
3.2
3.0
Ω
mA
1.00
0.50
0.50
0.50
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
μA
150
75
50
25
mA
1N957B
1N958B
1N959B
1N960B
1N961B
1N962B
1N963B
1N964B
1N965B
1N966B
1N967B
1N968B
1N969B
1N970B
1N971B
1N972B
1N973B
1N974B
1N975B
1N976B
1N977B
1N978B
1N979B
1N980B
1N981B
1N982B
6.460
7.125
7.790
8.645
9.500
10.45
11.40
12.35
14.25
15.20
17.10
19.00
20.90
22.80
25.65
28.50
31.35
34.20
37.05
40.85
44.65
48.45
53.20
58.90
64.60
71.25
6.8
7.5
8.2
9.1
10
11
12
13
15
16
18
20
22
24
27
30
33
36
39
43
47
51
56
62
68
75
7.140
7.875
8.610
9.555
10.50
11.55
12.60
13.65
15.75
16.80
18.90
21.00
23.10
25.20
28.35
31.50
34.65
37.80
40.95
45.15
49.35
53.55
58.80
65.10
71.40
78.75
4.5
5.5
6.5
7.5
8.5
700
700
700
700
700
700
700
700
700
700
750
750
750
750
750
1000
1000
1000
1000
1500
1500
2000
2000
2000
2000
2000
5.2
5.7
6.2
6.9
7.6
8.4
9.1
9.9
11.4
12.2
13.7
15.2
16.7
18.2
20.6
22.8
25.1
27.4
29.7
32.7
35.8
38.8
42.6
47.1
51.7
56.0
47
42
38
35
32
28
26
24
21
19
17
15
14
13
11
10
10
9.5
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
5.0
11.5
13.0
16.0
17.0
21.0
25.0
29.0
33.0
41.0
49.0
58.0
70.0
80.0
93.0
105
125
150
185
230
270
9.2
8.5
7.8
7.0
6.4
5.9
5.4
4.9
4.5
4.0
2.7
2.5
2.2
2.0
1.8
1.7
R1 (27-October 2011)