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
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= 15
µ
A @ 25°C & VR= 8 Vdc
ELECTRICAL CHARACTERISTICS @ 25°C, unless otherwise specified.
JEDEC ZENER ZENER MAXIMUM VOLTAGE TEMPERATURE EFFECTIVE
TYPE VOLTAGE TEST ZENER TEMPERATURE RANGE TEMPERATURE
NUMBER CURRENT IMPEDANCE STABILITY COEFFICIENT
vz@ I ZT I ZT ZZT ∆V ZT
MAXIMUM
(Note 1) (Note 2)
VOLTS mA OHMS mV °C % / °C
1N941 11.12—12.28 7.5 30 88 0 to + 75 0.01
1N941A 11.12—12.28 7.5 30 181 -55 to +100 0.01
1N941B 11.12—12.28 7.5 30 239 -55 to +150 0.01
1N942 11.12—12.28 7.5 30 44 0 to + 75 0.005
1N942A 11.12—12.28 7.5 30 90 -55 to +100 0.005
1N942B 11.12—12.28 7.5 30 120 -55 to +150 0.005
1N943 11.12—12.28 7.5 30 18 0 to + 75 0.002
1N943A 11.12—12.28 7.5 30 36 -55 to +100 0.002
1N943B 11.12—12.28 7.5 30 47 -55 to +150 0.002
1N944 11.12—12.28 7.5 30 9 0 to + 75 0.001
1N944A 11.12—12.28 7.5 30 18 -55 to +100 0.001
1N944B 11.12—12.28 7.5 30 24 -55 to +150 0.001
1N945 11.12—12.28 7.5 30 4 0 to + 75 0.0005
1N945A 11.12—12.28 7.5 30 9 -55 to +150 0.0005
1N945B 11.12 -12.28 7.5 30 12 -55 to +150 0.0005
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.
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.
•
1N941B, 1N943B, 1N944B AND 1N945B AVAILABLE IN JAN, JANTX AND JANTXV
PER MIL-PRF-19500/157
•
1N941B-1, 1N943B-1, 1N944B-1 AND 1N945B-1 AV AILABLE IN JAN, JANTX, JANTXV AND JANS
PER MIL-PRF-19500/157
• 11.7 VOLT NOMINAL ZENER VOLTAGE
• TEMPERATURE COMPENSATED ZENER REFERENCE DIODES
• METALLURGICALLY BONDED
1N941 thru 1N945B
and
1N941B-1 thru 1N945B-1
1N941 thru 1N945B
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)
5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5
OPERATING CURRENT lZT (mA)
FIGURE 3
TYPICAL CHANGE OF TEMPERATURE COEFFICIENT
WITH CHANGE IN OPERATING CURRENT
5678910
OPERATING CURRENT lZT (mA)
FIGURE 4
ZENER IMPEDANCE VS. OPERATING CURRENT
100
50
20
10
5
2
1
ZENER IMPEDANCE ZZT (OHMS)
+.0010
+.0005
0
-.0005
-.0010
CHANGE IN TEMPERATURE
COEFFICIENT (% / °C)
