MCC
)HDWXUHV
•
•
•
omponents
21201 Itasca Street Chatsworth
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1N957
THRU
1N978
Zener Voltage 6.8V to 51V
Silicon Planar Power Zener Diodes
Standards zener voltage tolerance is ±20%, Add suffix “A” for
±10% tolerance and suffix “B” for ±5% tolerance, non standards
and higher zener voltage upon request
0.5W Silicon Planar
Zener Diodes
0HFKDQLFDO'DWD
•
•
•
Case: DO-35 glass case
Polarity: Color band denotes cathode end
Weight: Approx. 0.13 gram
DO-35
D
0D[LPXP5DWLQJV
Symbol
Zener Current
Power Dissipation
@ T
A
=25
o
C
Junction Temperature
Storage Temperature
Range
P
tot
T
J
T
STG
Value
See Table 1
500
175
-65 to 175
Units
mW
o
o
A
Cathode
Mark
B
C
C
D
(OHFWULFDO &KDUDFWHULVWLFV #
°
& 8QOHVV 2WKHUZLVH 6SHFLILHG
Thermal resistance
Forward Voltage
@ I
F
=200mA
Symbol
R
-$
V
F
Maximum
300
1.5
o
C
Unit
C/W
V
DIMENSIONS
INCHES
MIN
---
---
---
1.000
MM
MIN
---
---
---
25.40
NOTE:
Valid provided that a distance of 8mm from case are kept at
ambient temperature
DIM
A
B
C
D
MAX
.166
.079
.020
---
MAX
4.2
2.00
.52
---
NOTE
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1N957 thru 1N978
MCC
PART
NUMBER
1N957
1N958
1N959
1N960
1N961
1N962
1N963
1N964
1N965
1N966
1N967
1N968
1N969
1N970
1N971
1N972
1N973
1N974
1N975
1N976
1N977
1N978
Note:
1)
ZENER
VOLTAGE
3)
@TEST
CURRENT
V
Z
I
ZT
V
mA
6.8
18.5
7.5
16.5
8.2
15
9.1
14
10
12.5
11
11.5
12
10.5
13
9.5
15
8.5
16
7.8
18
7.0
20
6.2
22
5.6
24
5.2
27
4.6
30
4.2
33
3.8
36
3.4
39
3.2
43
3.0
47
2.7
51
2.5
MAXIMUM ZENER
IMPEDANCE
1)
Z
ZT
MAXIMUM REVERSE
LEAKAGE CURRENT
TEST-VOLTAGE
I
R2)
A
150
75
50
10
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
Suffix A
V
4.9
5.4
5.9
6.6
7.2
8.0
8.6
9.4
10.8
11.5
13.0
14.4
15.8
17.3
19.4
21.6
23.8
25.9
28.1
31.0
33.8
36.7
Suffix B
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
27.4
29.7
32.7
35.8
38.8
MCC
MAXIMUM
ZENER
CURRENT
I
ZM2)
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
TYPICAL
TEMP.
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
Z
ZK
4.5
5.5
5.5
5.5
5.5
5
11.5
13
16
17
21
25
29
33
41
49
58
70
80
93
105
125
700
700
700
700
700
700
700
700
700
700
750
750
750
750
750
1000
1000
1000
1000
1500
1500
1500
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
0.25
0.25
0.25
0.25
0.25
:
2)
3)
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 (I
ZT
) is superimposed on I
ZT
Zener impedance is measured at two points
to insure a sharp knee on the breakdown curve and to eliminate unstable units.
Valid provided that leads are kept at ambient temperature at a distance of 8mm from case.
Measured with device junction in thermal equilibrium.
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