• 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
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
l
R
= 15
µ
A @ 25°C & V
R
= 8 Vdc
ELECTRICAL CHARACTERISTICS
@ 25°C, unless otherwise speci½ed.
JEDEC
TYPE
NUMBER
ZENER
VOLTAGE
v @I
z
ZT
ZENER
TEST
CURRENT
I
ZT
MAXIMUM
VOLTAGE
TEMPERATURE
EFFECTIVE
ZENER
TEMPERATURE
RANGE
TEMPERATURE
IMPEDANCE
STABILITY
COEFFICIENT
ZZT
³V
ZT
MAXIMUM
(Note 1)
(Note 2)
mV
88
181
239
44
90
120
18
36
47
9
18
24
4
9
12
°C
0 to + 75
-55 to +100
-55 to +150
0 to + 75
-55 to +100
-55 to +150
0 to + 75
-55 to +100
-55 to +150
0 to + 75
-55 to +100
-55 to +150
0 to + 75
-55 to +150
-55 to +150
% / °C
0.01
0.01
0.01
0.005
0.005
0.005
0.002
0.002
0.002
0.001
0.001
0.001
0.0005
0.0005
0.0005
VOLTS
1N941
1N941A
1N941B
1N942
1N942A
1N942B
1N943
1N943A
1N943B
1N944
1N944A
1N944B
1N945
1N945A
1N945B
11.12—12.28
11.12—12.28
11.12—12.28
11.12—12.28
11.12—12.28
11.12—12.28
11.12—12.28
11.12—12.28
11.12—12.28
11.12—12.28
11.12—12.28
11.12—12.28
11.12—12.28
11.12—12.28
11.12 -12.28
mA
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
OHMS
30
30
30
30
30
30
30
30
30
30
30
30
30
30
30
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.
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.
6 LAKE STREET, LAWRENCE, MASSACHUSETTS 01841
PHONE (978) 620-2600
FAX (978) 689-0803
WEBSITE: http://www.microsemi.com
21
Pd, Rated Power
Dissipation (mW)
thru
1N945B
INCLUDING -1 VERSIONS
1N941
600
500
400
300
200
100
0
0
25
50
75
100
125
150
175
TL, Lead temperature (C°) 3/8” from body
FIGURE 2
POWER DERATING CURVE
CHANGE IN TEMPERATURE
COEFFICIENT (% / °C)
+.0010
+.0005
0
-.0005
-.0010
5.5
6.0
6.5 7.0
7.5 8.0
8.5
9.0
OPERATING CURRENT l
(mA)
ZT
9.5
FIGURE 3
TYPICAL CHANGE OF TEMPERATURE COEFFICIENT
WITH CHANGE IN OPERATING CURRENT
100
50
ZENER IMPEDANCE Z
ZT
(OHMS)
20
10
5
2
1
5
6
7
8
9
OPERATING CURRENT lZT (mA)
10
FIGURE 4
ZENER IMPEDANCE VS. OPERATING CURRENT
22
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