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: -65C to +175C
Storage Temperature: -65C to +175C
DC Power Dissipation: 500 mW @ +50C
Power Derating: 4 mW / C above +50C
Forward Voltage @ 200mA: 1.1volts maximum
ELECTRICAL CHARACTERISTICS @ 25C
JEDEC
NOMINAL
ZENER
MAX. DC
TYPE
ZENER
TEST
MAXIMUM ZENER IMPEDANCE
ZENER
MAX. REVERSE
NUMBER
VOLTAGE
CURRENT
CURRENT
LEAKAGE CURRENT
V
Z
1
ZT
(NOTE 3)
(NOTE 1)
(NOTE 2)
Z
ZT
@ 1
ZT
Z
ZK
@ 1
ZK
1
ZM
l
R
@ V
R
VOLTS
mA
OHMS
OHMS
mA
mA
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 25C + 3C.
NOTE 3
Zener impedance is derived by superimposing on 1
ZT
A 60Hz rms a.c. current
equal to 10% of 1
ZT
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
Z
ZT
(OHMS)
1N957
thru
1N986B
INCLUDING -1 VERSIONS
FIGURE 2
3.3
VOL
T
5.1
VOL
T
27
VOL
T
11
V
OL
T
6.2
VOL
T
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