1N957B - 1N973B Series
Discrete POWER & Signal
Technologies
1N957B - 1N973B Series Half Watt Zeners
Absolute Maximum Ratings*
Parameter
Storage Temperature Range
Maximum Junction Operating Temperature
Lead Temperature (1/16” from case for 10 seconds)
Total Device Dissipation
Derate above 25°C
TA = 25°C unless otherwise noted
Tolerance: B = 5%
Value
-65 to +200
+ 175
+ 230
500
3.33
Units
°C
°C
°C
mW
mW/°C
*
These ratings are limiting values above which the serviceability of the diode may be impaired.
DO-35
NOTES:
1)
These ratings are based on a maximum junction temperature of 200 degrees C.
2)
These are steady state limits. The factory should be consulted on applications involving pulsed
or low duty cycle operations.
Electrical Characteristics
Device
1N957B
1N958B
1N959B
1N960B
1N961B
1N962B
1N963B
1N964B
1N965B
1N966B
1N967B
1N968B
1N969B
1N970B
1N971B
1N972B
1N973B
TA = 25°C unless otherwise noted
V
Z
(V)
6.8
7.5
8.2
9.1
10
11
12
13
15
16
18
20
22
24
27
30
33
Z
Z
(Ω)
4.5
5.5
6.5
7.5
8.5
9.5
11.5
13
16
17
21
25
29
33
41
49
58
@
I
ZT
(mA)
18.5
16.5
15
14
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
Z
ZK
(Ω)
700
700
700
700
700
700
700
700
700
700
750
750
750
750
750
1,000
1,000
@
I
ZK
(mA)
1.0
0.5
0.5
0.5
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
I
R
(µA)
150
75
50
25
10
5
5
5
5
5
5
5
5
5
5
5
5
@
V
R
(V)
5.2
5.7
6.2
6.9
7.6
8.4
9.1
9.9
11.4
12.2
13.7
15.2
16.7
18.2
20.6
22.8
25.1
T
C
(%/°C)
0.05
0.058
0.062
0.068
0.072
0.073
0.076
0.079
0.082
0.083
0.085
0.086
0.087
0.088
0.090
0.091
0.092
I
ZM
*
(mA)
47
42
38
35
32
28
26
24
21
19
17
15
14
13
11
10
9.2
IZM (Maximum Zener Current Rating) Values shown are based on the JEDEC rating of 400 milliwatts. Where the actual zener voltage (VZ) is known
at the operating point, the maximum zener current may be increased and is limited by the derating curve.
*
ã
1997 Fairchild Semiconductor Corporation
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