1N957B thru 1N973B
Zener Diode, 1/2 Watt
5% Tolerance
Features:
D Zener Voltage 6.8 to 33V
D DO35 Package
Absolute Maximum Ratings: (TA = +25C unless otherwise specified)
Operating Junction Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65 to +200C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65 to +200C
DC Power Dissipation (TL +50C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500mW
Derate Above 50C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.33mW/C
Forward Voltage (IF = 200mA), VF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5V
Electrical Characteristics: (TC = +25C, unless otherwise specified)
Device
Number
Nominal
Maximum Zene Impedance
Zener
(Note 2)
Test
Voltage
Current
VZ
ZZT @ IZT ZZK @ IZK IZK
IZT
(Note 1)
Maximum
DC Zener
Current
IZM
IR Max
mA
A
5%
Maximum Reverse Current
Test Voltage Vdc
Volts
mA
Ohms
Ohms
mA
VR
10%
1N957B
6.8
18.5
4.5
700
1.0
47
61
150
5.2
4.9
1N958B
7.5
16.5
5.5
700
0.5
42
55
75
5.7
5.4
1N959B
8.2
15.0
6.5
700
0.5
38
50
50
6.2
5.9
1N960B
9.1
14.0
7.5
700
0.5
35
45
25
6.9
6.6
1N961B
10
12.5
8.5
700
0.25
32
41
10
7.6
7.2
1N962B
11
11.5
9.5
700
0.25
28
37
5
8.4
8.0
1N963B
12
10.5
11.5
700
0.25
26
34
5
9.1
8.6
Note 1. Nominal zener voltage is measured with the device junction in thermal equilibrium at the lead
temperature of +30C 1C and 3/8” lead length.
Note 2. 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 the AC frequency = 60Hz.
Electrical Characteristics (Cont’d): (TC = +25C, unless otherwise specified)
Device
Number
Nominal
Maximum Zene Impedance
Zener
(Note 2)
Test
Voltage
Current
VZ
ZZT @ IZT ZZK @ IZK IZK
IZT
(Note 1)
Maximum
DC Zener
Current
IZM
IR Max
mA
A
5%
Maximum Reverse Current
Test Voltage Vdc
Volts
mA
Ohms
Ohms
mA
VR
10%
1N964B
13
9.5
13.0
700
0.25
24
32
5
9.9
9.4
1N965B
15
8.5
16.0
700
0.25
21
27
5
11.4
10.8
1N966B
16
7.8
17.0
700
0.25
19
37
5
12.2
11.5
1N967B
18
7.0
21.0
750
0.25
17
23
5
13.7
13.0
1N968B
20
6.2
25.0
750
0.25
15
20
5
15.2
14.4
1N969B
22
5.6
29.0
750
0.25
14
18
5
16.7
15.8
1N970B
24
5.2
33.0
750
0.25
13
17
5
18.2
17.3
1N971B
27
4.6
41.0
750
0.25
11
15
5
20.6
19.4
1N972B
30
4.2
49.0
1000
0.25
10
13
5
22.8
21.6
1N973B
33
3.8
58.0
1000
0.25
9.2
12.5
5
25.1
23.8
Note 1. Nominal zener voltage is measured with the device junction in thermal equilibrium at the lead
temperature of +30C 1C and 3/8” lead length.
Note 2. 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 the AC frequency = 60Hz.
1.000 (25.4)
Min
.200 (5.08)
Max
.022 (.509) Dia Max
.090 (2.28)
Dia Max
Color Band Denotes Cathode
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