CDIDI CDLL944B, CDLL944A, CDLL944, CDLL943B, CDLL943A Datasheet

...

22 COREY STREET, MELROSE, MASSACHUSETTS 02176 PHONE (781) 665-1071 FAX (781) 665-7379 WEBSITE: http://www.cdi-diodes.com E-mail: mail@cdi-diodes.com

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 µA @ 25°C & VR= 8 Vdc

ELECTRICAL CHARACTERISTICS @ 25°C, unless otherwise specified.

CDI ZENER ZENER MAXIMUM VOLTAGE TEMPERATURE EFFECTIVE

TYPE VOLTAGE TEST ZENER TEMPERATURE RANGE TEMPERATURE

NUMBER CURRENT IMPEDANCE STABILITY COEFFICIENT

VZ@ I

MAXIMUM

(Note 1) (Note 2)

VOLTS mA OHMS mV °C % / °C

CDLL941 11.12 - 12.28 7.5 30 88 0 to + 75 0.01 CDLL941A 11.12 - 12.28 7.5 30 181 -55 to +100 0.01 CDLL941B 11.12 - 12.28 7.5 30 239 -55 to +150 0.01

CDLL942 11.12 - 12.28 7.5 30 44 0 to + 75 0.005 CDLL942A 11.12 - 12.28 7.5 30 90 -55 to +100 0.005 CDLL942B 11.12 - 12.28 7.5 30 120 -55 to +150 0.005

CDLL943 11.12 - 12.28 7.5 30 18 0 to + 75 0.002 CDLL943A 11.12 - 12.28 7.5 30 36 -55 to +100 0.002 CDLL943B 11.12 - 12.28 7.5 30 47 -55 to +150 0.002

CDLL944 11.12 - 12.28 7.5 30 9 0 to + 75 0.001 CDLL944A 11.12 - 12.28 7.5 30 18 -55 to +100 0.001 CDLL944B 11.12 - 12.28 7.5 30 24 -55 to +150 0.001

CDLL945 11.12 - 12.28 7.5 30 4 0 to + 75 0.0005 CDLL945A 11.12 - 12.28 7.5 30 9 -55 to +100 0.0005 CDLL945B 11.12 -12.28 7.5 30 12 -55 to +150 0.0005

• 1N941BUR-1, 1N943UR-1B, 1N944BUR-1 AND 1N945BUR-1 AVAILABLE IN

JAN, JANTX, JANTXV AND JANS

PER MIL-PRF-19500/157

• TEMPERATURE COMPENSATED ZENER REFERENCE DIODES

• LEADLESS PACKAGE FOR SURFACE MOUNT

• 11.7 VOLT NOMINAL ZENER VOLTAGE

• METALLURGICALLY BONDED, DOUBLE PLUG CONSTRUCTION

1N941BUR-1 thru1N945BUR-1

and

CDLL941 thru CDLL945B

FIGURE 1

DESIGN DATA

CASE: DO-213AA, Hermetically sealed

glass case. (MELF, SOD-80, LL34)

LEAD FINISH: Tin / Lead

POLARITY: Diode to be operated with

the banded (cathode) end positive.

MOUNTING POSITION: Any.

MOUNTING SURFACE SELECTION:

The Axial Coefficient of Expansion (COE) Of this Device is Approximately +6PPM/°C. The COE of the Mounting Surface System Should Be Selected To Provide A Suitable Match With This Device.

MILLIMETERS INCHES

DIM MIN MAX MIN MAX

D 1.60 1.70 0.063 0.067 F 0.41 0.55 0.016 0.022 G 3.30 3.70 .130 .146

G1 2.54 REF. .100 REF.

S 0.03 MIN. .001 MIN.

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.

0 25 50 75 100 125 150 175

TL, Ambient temperature (°C)

FIGURE 2

POWER DERATING CURVE

600 500

400 300 200 100

Pd, Rated Power

Dissipation (mW)

FIGURE 3

TYPICAL CHANGE OF TEMPERATURE COEFFICIENT

WITH CHANGE IN OPERATING CURRENT

+.0010

+.0005

-.0005

-.0010

CHANGE IN TEMPERATURE COEFFICIENT ( %/°C)

5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 OPERATING CURRENT lZT(mA)

5678910

OPERATING CURRENT lZT(mA)

FIGURE 4

ZENER IMPEDANCE VS. OPERATING CURRENT

100

ZENER IMPEDANCE ZZT (OHMS)

CDLL941

thru

CDLL945B