CDIDI 1N943B, 1N943A, 1N943, 1N942B, 1N942A Datasheet

22 COREY STREET, MELROSE, MASSACHUSETTS 02176
PHONE [phone] FAX [phone]
WEBSITE: http://www.cdi-diodes.com E-mail: [e-mail]

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= 15µ 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 lZTA 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 A VAILABLE 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)