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PHONE (978) 620-2600
FAX (978) 689-0803
WEBSITE: http://www.microsemi.com
21
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
= 15
A @ 25C & V
R
= 8 Vdc
ELECTRICAL CHARACTERISTICS @ 25C, unless otherwise specied.
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 specied 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
5
6
7
8
9
10
OPERATING CURRENT lZT (mA)
FIGURE 4
ZENER IMPEDANCE VS. OPERATING CURRENT
100
50
20
10
5
2
1
ZENER IMPEDANCE Z
ZT
(OHMS)
+.0010
+.0005
0
-.0005
-.0010
CHANGE IN TEMPERATURE
COEFFICIENT (% / C)
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