CDIDI CD3156, CD3155, CD3154 Datasheet

• MONOLITHIC TEMPERATURE COMPENSATED ZENER REFERENCE CHIPS

• ALL JUNCTIONS COMPLETELY PROTECTED WITH SILICON DIOXIDE

• 8.4 VOLT NOMINAL ZENER VOLTAGE +

5%

• ELECTRICALLY SIMILAR TO 1N3154 THRU 1N3156

• COMPATIBLE WITH ALL WIRE BONDING AND DIE ATTACH TECHNIQUES,
WITH THE EXCEPTION OF SOLDER REFLOW

CD3154

thru

CD3156

FIGURE 1

DESIGN DATA

METALLIZATION:

Top: C (Cathode).............Al

A (Anode)................Al

Back:.................................Au

AL THICKNESS.......25,000

Å Min

GOLD THICKNESS...4,000 Å Min

CHIP THICKNESS.............10 Mils

CIRCUIT LAYOUT DATA:

Backside must be electrically
isolated.

Backside is not cathode.

For Zener operation cathode must
be operated positive with respect
to anode.

TOLERANCES: ALL
Dimensions +

2 mils

MAXIMUM RATINGS

Operating Temperature: -65°C to +175°C
Storage Temperature: -65°C to +175°C

ELECTRICAL CHARACTERISTICS @ 25°C, unless otherwise specified.

MAXIMUM

JEDEC ZENER ZENER MAXIMUM VOLTAGE TEMPERATURE EFFECTIVE

TYPE VOLTAGE TEST ZENER TEMPERATURE RANGE TEMPERATURE

NUMBER CURRENT IMPEDANCE STABILITY COEFFICIENT

VZT@ I

ZT

I

ZT

Z

ZT

∆V

ZT

MAXIMUM

(Note 1) (Note 2)

VOLTS mA OHMS mV °C % / °C

CD3154 8.00-8.80 10 25 130 -55 to + 100 0.01
CD3155 8.00-8.80 10 25 65 -55 to + 100 0.005
CD3156 8.00-8.80 10 25 26 -55 to + 100 0.002

NOTE 1 Zener impedance is derived by superimposing on lZT@ 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.

38 MILS

23 MILS

38 MILS

23 MILS

10 MILS

11 MILS

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

CD3154 thru CD3156

0 25 50 75 100 125 150 175

TL, Ambient temperature (C°)

FIGURE 2

POWER DERATING CURVE

600
500

400
300
200
100

0

Pd, Rated Power

Dissipation (mW)

8 9 10 11 12 13

OPERATING CURRENT lZT(mA)

FIGURE 3

ZENER IMPEDANCE

VS.

OPERATING CURRENT

100

50

10

5

1

ZENER IMPEDANCE Z

ZT

(OHMS)

6 8 10 12 14

OPERATING CURRENT lZT(mA)

FIGURE 4

TYPICAL CHANGE OF TEMPERATURE COEFFICIENT

WITH CHANGE IN OPERATING CURRENT

+.0015

+.0010

+.0005

0

-.0005

-.0010

-.0015

CHANGE IN TEMPERATURE COEFFICIENT ( %/°C)