22 COREY STREET, MELROSE, MASSACHUSETTS 02176
PHONE (781) 665-1071 FAX (781) 665-7379
WEBSITE: http://www.cdi-diodes.com E-mail: mail@cdi-diodes.com
MAXIMUM RATINGS
Operating Temperature: -65°C to +175°C
Storage Temperature: -65°C to +175°C
DC Power Dissipation: 500 mW @ +50°C
Power Derating: 4 mW / °C above +50°C
Forward Voltage @ 200mA: 1.1volts maximum
ELECTRICAL CHARACTERISTICS @ 25°C
JEDEC NOMINAL ZENER MAX. DC
TYPE ZENER TEST MAXIMUM ZENER IMPEDANCE ZENER MAX. REVERSE
NUMBER VOLTAGE CURRENT CURRENT LEAKAGE CURRENT
VZ 1ZT (NOTE 3)
(NOTE 1) (NOTE 2) ZZT @ 1ZT ZZK @ 1ZK 1ZM lR@ VR
VOLTS mA OHMS OHMS mA mA
µ
A VOLTS
1N957B 6.8 18.5 4.5 700 1.0 55 5 5.2
1N958B 7.5 16.5 5.5 700 .5 50 5 5.7
1N959B 8.2 15.0 6.5 700 .5 45 5 6.2
1N960B 9.1 14.0 7.5 700 .5 41 5 6.9
1N961B 10 12.5 8.5 700 .25 38 2 7.6
1N962B 11 11.5 9.5 700 .25 32 1 8.4
1N963B 12 10.5 11.5 700 .25 31 1 9.1
1N964B 13 9.5 13 700 .25 28 0.5 9.9
1N965B 15 8.5 16 700 .25 25 0.5 11
1N966B 16 7.8 17 700 .25 24 0.5 12
1N967B 18 7.0 21 750 .25 20 0.5 14
1N968B 20 6.2 25 750 .25 18 0.5 15
1N969B 22 5.6 29 750 .25 16 0.5 17
1N970B 24 5.2 33 750 .25 15 0.5 18
1N971B 27 4.6 41 750 .25 13 0.5 21
1N972B 30 4.2 49 1000 .25 12 0.5 23
1N973B 33 3.8 58 1000 .25 11 0.5 25
1N974B 36 3.4 70 1000 .25 10 0.5 27
1N975B 39 3.2 90 1000 .25 9.5 0.5 30
1N976B 43 3.0 93 1500 .25 8.8 0.5 33
1N977B 47 2.7 105 1500 .25 7.9 0.5 36
1N978B 51 2.5 125 1500 .25 7.4 0.5 39
1N979B 56 2.2 150 2000 .25 6.8 0.5 43
1N980B 62 2.0 185 2000 .25 6.0 0.5 47
1N981B 68 1.8 230 2000 .25 5.5 0.5 52
1N982B 75 1.7 270 2000 .25 5.0 0.5 56
1N983B 82 1.5 330 3000 .25 4.6 0.5 62
1N984B 91 1.4 400 3000 .25 4.1 0.5 69
1N985B 100 1.3 500 3000 .25 3.7 0.5 76
1N986B 110 1.1 750 4000 .25 3.3 0.5 84
NOTE 1 Zener voltage tolerance on "B"suffix is + 5%. Suffix letter A denotes +10%. No Suffix
denotes + 20% tolerance, "C" suffix denotes + 2% and "D" suffix denotes + 1%.
NOTE 2 Zener voltage is measured with the device junction in thermal equilibrium at
an ambient temperature of 25°C + 3°C.
NOTE 3 Zener impedance is derived by superimposing on 1ZT A 60Hz rms a.c. current
equal to 10% of 1ZT
FIGURE 1
DESIGN DATA
CASE: Hermetically sealed glass
case. DO 35 outline.
LEAD MATERIAL: Copper clad steel.
LEAD FINISH: Tin / Lead
THERMAL RESISTANCE: (ROJEC):
250 ˚C/W maximum at L = .375 inch
THERMAL IMPEDANCE: (ZOJX): 35
˚C/W maximum
POLARITY: Diode to be operated with
the banded (cathode) end positive.
MOUNTING POSITION: Any.
1N962B-1 THRU 1N986B-1 AVAILABLE IN JAN, JANTX AND JANTXV
PER MIL-PRF-19500/117
METALLURGICALLY BONDED
DOUBLE PLUG CONSTRUCTION
1N957 thru 1N986B
and
1N962B-1 thru 1N986B-1
0 25 50 75 100 125 150 175
TA, Ambient temperature (C°)
POWER DERATING CURVE
500
400
300
200
100
0
Pd, Rated Power
Dissipation (mW)
.1 .2 .3 .4 .5 1 2 5 10 20 30 40 50 100
OPERATING CURRENT lZT (mA)
FIGURE 3
ZENER IMPEDANCE VS. OPERATING CURRENT
1000
500
400
300
200
100
50
40
30
20
10
5
4
3
2
1
ZENER IMPEDANCE ZZT (OHMS)
1N957 thru 1N986B
INCLUDING -1 VERSIONS
FIGURE 2
3.3 VOLT
5.1 VOLT
27 VOLT
11 VOLT
6.2 VOLT