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1N944 Datasheet PDF

1N944
Digitron Semiconductors

Part Number 1N944
Description TEMPERATURE COMPENSATED ZENER DIODES
Page 2 Pages
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1N941-1N946B
High-reliability discrete products
and engineering services since 1977
TEMPERATURE COMPENSATED ZENER DIODES
FEATURES
Available as “HR” (high reliability) screened per MIL-PRF-19500, JANTX level. Add “HR” suffix to base part number.
Available as non-RoHS (Sn/Pb plating), standard, and as RoHS by adding “-PBF” suffix.
MAXIMUM RATINGS
Operating and Storage Temperature:
DC Power Dissipation:
Optimum Voltage Temperature Stability
Solder Temperatures:
-55 to +175°C
500 mW @ TL = 25°C maximum current lZM of 39mA
lZ = 7.5mA
260°C for 10 s (maximum)
ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise specified)
Part
Number
(Note 1)
Zener Voltage
VZ @ lZT
(Note 4)
Zener Test
Current
lZT
Maximum Zener
Impedance
(Note 2)
ZZT @ lZT
Maximum
Reverse Current
lR @ 8 V
Volts
mA
Ohms
μA
Voltage Temperature
Stability
(Note 3 & 4) VZT
Maximum
mV
Temperature
Range
°C
1N941
11.12-12.28
7.5
30
15
88 0 to +75
1N941A
11.12-12.28
7.5
30
15
181 -55 to +100
1N941B
11.12-12.28
7.5
30
15
239 -55 to +150
1N942
11.12-12.28
7.5
30
15
44 0 to +75
1N942A
11.12-12.28
7.5
30
15
90 -55 to +100
1N942B
11.12-12.28
7.5
30
15
120 -55 to +150
1N943
11.12-12.28
7.5
30
15
18 0 to +75
1N943A
11.12-12.28
7.5
30
15
36 -55 to +100
1N943B
11.12-12.28
7.5
30
15
47 -55 to +150
1N944
11.12-12.28
7.5
30
15
9 0 to +75
1N944A
11.12-12.28
7.5
30
15
18 -55 to +100
1N944B
11.12-12.28
7.5
30
15
24 -55 to +150
1N945
11.12-12.28
7.5
30
15
4 0 to +75
1N945A
11.12-12.28
7.5
30
15
9 -55 to +100
1N945B
11.12-12.28
7.5
30
15
12 -55 to +150
1N946
11.12-12.28
7.5
30
15
1.8 0 to +75
1N946A
11.12-12.28
7.5
30
15
3.6 -55 to +100
1N946B
11.12-12.28
7.5
30
15
4.7 -55 to +150
Note 1: For tighter voltage tolerances, add a hyphenated suffix to the part number for desired tolerance at the end of the part number.
Note 2: Measured by superimposing 0.75mA ac rms on 7.5 mA dc @ 25°C.
Note 3: The maximum allowable change observed over the entire temperature range will not exceed the specified mV change at any discrete temperature between the established limits.
Note 4: Voltage measurements to be performed 15 seconds after application of dc current.
Effective
Temperature
Coefficient
αVZ
%/°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
0.0002
0.0002
0.0002
Rev. 20121112

















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