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
1N935B-1, 1N937B-1 AND 1N938B-1 AVAILABLE IN
JAN
,
JANTX, JANTXV
AND JANS
PER MIL-PRF-19500/156
9.0 VOLT NOMINAL ZENER VOLTAGE
TEMPERATURE COMPENSATED ZENER REFERENCE DIODES
METALLURGICALLY BONDED
1N935 thru 1N938B
and
1N935B-1 thru 1N938B-1
FIGURE 1
DESIGN DATA
CASE: Hermetically sealed glass
case. DO 35 outline.
LEAD MATERIAL: Copper clad steel.
LEAD FINISH: Tin / Lead
POLARITY: Diode to be operated with
the banded (cathode) end positive.
MOUNTING POSITION: Any.
MAXIMUM RATINGS
Operating Temperature: -65C to +175C
Storage Temperature: -65C to +175C
DC Power Dissipation: 500mW @ +50C
Power Derating: 4 mW / C above +50C
REVERSE LEAKAGE CURRENT
l
R
= 10
A @ 25C & V
R
= 6 Vdc
ELECTRICAL CHARACTERISTICS @ 25C, unless otherwise specified.
NOTE 1 Zener impedance is derived by superimposing on l
ZT
A 60Hz rms a.c. current equal
to 10% of l
ZT
.
NOTE 2 The maximum allowable change observed over the entire temperature range i.e., the
diode voltage will not exceed the specified mV at any discrete temperature between
the established limits, per JEDEC standard No. 5.
JEDEC ZENER ZENER MAXIMUM VOLTAGE TEMPERATURE EFFECTIVE
TYPE
VOLTAGE
TEST
ZENER
TEMPERATURE
RANGE
TEMPERATURE
NUMBER
CURRENT
IMPEDANCE
STABILITY
COEFFICIENT
v
z
@ I
ZT
I
ZT
(Note 1)
V
ZT
Z
ZT
MAXIMUM
(Note 2)
VOLTS
mA
OHMS
mV
C
% / C
1N935
8.55--9.45
7.5
20
67
0 to + 75
0.01
1N935A
8.55--9.45
7.5
20
139
-55 to +100
0.01
1N935B
8.55--9.45
7.5
20
184
-55 to +150
0.01
1N936
8.55--9.45
7.5
20
34
0 to + 75
0.005
1N936A
8.55--9.45
7.5
20
70
-55 to +100
0.005
1N936B
8.55--9.45
7.5
20
92
-55 to +150
0.005
1N937
8.55--9.45
7.5
20
13
0 to + 75
0.002
1N937A
8.55--9.45
7.5
20
28
-55 to +100
0.002
1N937B
8.55--9.45
7.5
20
37
-55 to +150
0.002
1N938
8.55--9.45
7.5
20
6.7
0 to + 75
0.001
1N938A
8.55--9.45
7.5
20
13.9
-55 to +100
0.001
1N938B
8.55--9.45
7.5
20
19
-55 to +150
0.001
1N935
thru
1N938B
INCLUDING -1 VERSIONS
0
25
50
75
100
125
150
175
TL, Lead temperature (C) 3/8" from body
FIGURE 2
POWER DERATING CURVE
600
500
400
300
200
100
0
Pd,
Rated
Power
Dissipation
(mW)
5
6
7
8
9
10
OPERATING CURRENT l
ZT
(mA)
FIGURE 3
ZENER IMPEDANCE VS. OPERATING CURRENT
5
6
7
8
9
10
OPERATING CURRENT l
ZT
(mA)
FIGURE 4
TYPICAL CHANGE OF TEMPERATURE COEFFICIENT
WITH CHANGE IN OPERATING CURRENT
+.0015
+.0010
+.0005
0
-.0005
-.0010
-.0015
CHANGE
IN
TEMPERA
TURE
COEFFICIENT
(
%/C)
100
50
40
30
20
10
5
4
3
2
1
ZENER
IMPEDANCE
Z
ZT
(OHMS)
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