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Shanghai Lunsure Electronic Tech |
CE
CHENYI ELECTRONICS
FEATURES
. Silicon planar power zener diodes
. Standards zener voltage tolerance is 20%.Add suffix "A" for 10%
tolerance and suffix "B" for 5% tolerance other tolerance, non
standards and higher zener voltage upon request
1N957 THRU 1N978
0.5W SILICON PLANAR ZENER DIODES
MECHANICAL DATA
. Case: DO-35 glass case
. Polarity: Color band denotes cathode end
. Weight: Approx. 0.13gram
ABSOLUTE MAXIMUM RATINGS(LIMITING VALUES)(TA=25 )
Zener current see table "Characteristics"
Symbols
Value
Power dissipation at TA=75
Ptot 5001)
Junction temperature
TJ 175
Storage temperature range
TSTG
-65 to + 175
1)Valid provided that at a distance of 8mm from case are kept at ambient temperature(DO-35)
ELECTRICAL CHARACTERISTICS(TA=25 )
Units
mW
Symbols Min.
Thermal resistance junction to ambient
R JA
Forward voltage at IF=200mA
VF
1)Valid provided that leads at a distance of 8mm from case are kept at ambient temperature
Typ.
Max.
300 1)
1.5
Units
/W
Copyright @ 2000 SHANGHAI CHENYI ELECTRONICS CO.,LTD
Page 1 of 2
CE
CHENYI ELECTRONICS
1N957 THRU 1N978
0.5W SILICON PLANAR ZENER DIODES
1N957…1N978 SILICON PLANAR ZENER DIODES
Type
1N957
1N958
1N959
1N960
1N961
1N962
1N963
1N964
1N965
1N966
1N967
1N968
1N969
1N970
1N971
1N972
1N973
1N974
1N975
1N976
1N977
1N978
Zener Voltage Range3)
VZNOM
V
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
IZT
mA
18.5
16.5
15
14
12.5
11.5
10.5
9.5
8.5
7.8
7
6.2
5.6
5.2
4.6
4.2
3.8
3.4
3.2
3
2.7
2.5
Maximum
zener
impedence1)
ZZT ZZK
4.5
5.5
700
5
11.5
13
16
17
21
25
29 750
33
41
49
58
1000
70
80
93
105 1500
125
IZK
mA
1
0.5
0.25
Typical
Tempetature
coefficient
%/
0.050
0.058
0.062
0.068
0.075
0.076
0.077
0.079
0.082
0.083
0.085
0.086
0.087
0.088
0.090
0.091
0.092
0.093
0.094
0.095
0.095
0.096
Maximum Reverse
Leakage Current
IR 2) Test-Voltage
suffix A suffix B
AVV
150 4.9 5.2
75 5.4 5.7
50 5.9 6.2
10 6.6 6.9
7.2 7.6
5
8 8.4
8.6 9.1
9.4 9.9
10.8 11.4
11.5 12.2
13 13.7
14.4 15.2
15.8 16.7
17.3 18.2
5 19.4 20.6
21.6 22.8
23.8 25.1
25.9 27.4
28.1 29.7
31 32.7
33.8 35.8
36.7 38.8
Maximum
Regulator
Current
IZM 2)
mA
47
42
38
35
32
28
26
24
21
19
17
15
14
14
11
10
9.0
8.5
7.8
7.0
6.4
5.9
Notes:
(1)The Zener impedance is derived from the 1kHz Ac voltage which results when an AC current having an RMS value equal to 10%
of the Zener current (IZT) is suprimposed on IZT Zener impedance is measured at two points to insure a sharp knee on the
breakdown curve and to eliminate unstable units.
(2)Valid provided that leads are kept at ambient temperature at a distance of 8mm from case
(3) Measured with device junction in thermal equilibrium.
Copyright @ 2000 SHANGHAI CHENYI ELECTRONICS CO.,LTD
Page 2 of 2
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