Zener Diode Chip Series
CD957B thru CD986B
Available in JANHC and JANKC per MIL-PRF-19500/117
Features
• 0.5 Watt capability with proper heat sinking • Electrically equivalent to IN957B thru IN986B • All junctions completely protected with silicon dioxide • Compatible with all wire bonding and die attach techniques
Maximum Ratings
Operating Temperature: Storage Temperature: Forward Voltage @ 200mA:
-65°C to +175°C -65°C to +175°C 1.5 volts maximum
Electrical Specifications @ +25 ºC (Unless Otherwise Specified)
TYPE NUMBER
CD957B CD958B CD959B CD960B CD961B
CD962B CD963B CD964B CD965B CD966B
CD967B CD968B CD969B CD970B CD971B
CD972B CD973B CD974B CD975B CD976B
CD977B CD978B CD979B CD980B CD981B
CD982B CD983B CD984B CD985B CD986B
NOMINAL ZENER
VOLTAGE VZ
(NOTE 1)
VOLTS
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 82 91 100 110
ZENER TEST CURRENT l ZT
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
2.7 2.5 2.2 2.0 1.8
1.7 1.5 1.4 1.3 1.1
MAXIMUM ZENER IMPEDANCE (NOTE 2)
ZZT @ l ZT
OHMS
4.5 5.5 6.5 7.5 8.5
9.5 11.5 13 16 17
21 25 29 33 41
49 58 70 90 93
105 125 150 185 230
270 330 400 500 750
ZZK @ l ZK
OHMS
mA
700 1.0 700 0.5 700 0.5 700 0.5 700 0.25
700 0.25 700 0.25 700 0.25 700 0.25 700 0.25
750 0.25 750 0.25 750 0.25 750 0.25 750 0.25
1000 1000 1000 1000 1500
0.25 0.25 0.25 0.25 0.25
1500 1500 2000 2000 2000
0.25 0.25 0.25 0.25 0.25
2000 3000 3000 3000 4000
0.25 0 .25 0.25 0.25 0.25
MAXIMUM DC ZENER
CURRENT l ZM
mA
55 50 45 41 38
32 31 28 25 24
20 18 16 15 13
12 11 10 9.5 8.8
7.9 7.4 6.8 6.0 5.5
5.0 4.6 4.1 3.7 3.3
MAXIMUM REVERSE LEAKAGE CURRENT
lR @ VR
μ A VOLTS
5.0 5.2 5.0 5.7 5.0 6.2 5.0 6.9 2.0 7.6
1.0 8.4 1.0 9.1 0.5 9.9 0.5 11 0.5 12
0.5 14 0.5 15 0.5 17 0.5 18 0.5 21
0.5 23 0.5 25 0.5 27 0.5 30 0.5 33
0.5 36 0.5 39 0.5 43 0.5 47 0.5 52
0.5 56 0.5 62 0.5 69 0.5 76 0.5 84
NOTE 1 NOTE 2
Zener voltage range equals nominal voltage + 5% for “B” Suffix. “A” Suffix denotes + 10%, No Suffix denotes + 20%. "C" suffix = + 2% and "D" suffix = + 1%. Zener voltage is read using a pulse measurement, 10 milliseconds maximum.
Zener impedance is derived by superimposing on IZT a 60Hz rms a.c. current equal to 10% of IZT.
Revision Date: 12/13/2011 New Product
1
Outline Drawing
Anode
CD957B thru CD986B
DESIGN DATA
METALLIZATION:
Top: (Anode) Al Back: (Cathode) Au
AL THICKNESS:
25,000 Å Minimum
GOLD THICKNESS: 4,000 Å Minimum
CHIP THICKNESS: 10 Mils
CIRCUIT LAYOUT DATA: For Zener operation, cathode must be operated positive with respect to anode.
Graphs
ZENER IMPEDANCE ZZT (OHMS)
1000
500 400 300 200
100
50 40 30 20
10
5 4 3 2
27 VOLT
3.3 VOLT
5.1 VOLT
11 VOLT 6.2 VOLT
1 .1
.2 .3 .4 .5
1 2 5 10 20 30 40 OPERATING CURRENT lZT (mA)
50
100
ZENER IMPEDANCE VS. OPERATING CURRENT
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Revision Date: 12/13/2011
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