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: -65°C to +175°C
Storage Temperature: -65°C to +175°C
DC Power Dissipation: 500mW @ +50°C
Power Derating: 4 mW / °C above +50°C
REVERSE LEAKAGE CURRENT
lR= 10
µ
A @ 25°C & VR= 6 Vdc
ELECTRICAL CHARACTERISTICS @ 25°C, unless otherwise specified.
NOTE 1 Zener impedance is derived by superimposing on lZT A 60Hz rms a.c. current equal
to 10% of lZT.
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
vz@ I ZT I ZT (Note 1) ∆V ZT
ZZT 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)
5678910
OPERATING CURRENT lZT (mA)
FIGURE 3
ZENER IMPEDANCE VS. OPERATING CURRENT
5678910
OPERATING CURRENT lZT (mA)
FIGURE 4
TYPICAL CHANGE OF TEMPERATURE COEFFICIENT
WITH CHANGE IN OPERATING CURRENT
+.0015
+.0010
+.0005
0
-.0005
-.0010
-.0015
CHANGE IN TEMPERATURE COEFFICIENT ( %/°C)
100
50
40
30
20
10
5
4
3
2
1
ZENER IMPEDANCE ZZT (OHMS)
