6 LAKE STREET, LAWRENCE, MASSACHUSETTS 01841
PHONE (978) 620-2600 FAX (978) 689-0803
WEBSITE: http://www.microsemi.com 21
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 speci½ed.
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 ³V 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 speci½ed 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 AVAILABLE 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
22
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)
