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
PowDeerraDteisAsibpoavtieon50(TCL
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+50C),
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. . . 500mW
3.33mW/C
Forward Voltage (IF = 200mA), VF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5V
Electrical Characteristics: (TC = +25C, unless otherwise specified)
Device
Number
1N957B
Nominal
Zener
Voltage
VZ
(Note 1)
Volts
6.8
Test
Current
IZT
mA
Maximum Zene Impedance
(Note 2)
ZZT @ IZT ZZK @ IZK IZK
Ohms Ohms mA
18.5 4.5
700 1.0
Maximum
DC Zener
Current
IZM
mA
47 61
Maximum Reverse Current
IR Max
A
150
Test Voltage Vdc
5% VR 10%
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.
