CDIDI 1N4784A, 1N4783A, 1N4783, 1N4782A, 1N4782 Datasheet

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

• 8.5 VOLT NOMINAL ZENER VOLTAGE + 5%

• TEMPERATURE COMPENSATED ZENER REFERENCE DIODES

• LOW CURRENT RANGE: 0.5 AND 1.0 mA

• METALLURGICALLY BONDED

• DOUBLE PLUG CONSTRUCTION

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.

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= 10 µA @ 25°C & VR= 6 Vdc

ELECTRICAL CHARACTERISTICS @ 25°C, unless otherwise specified.

JEDEC ZENER ZENER MAXIMUM VOLTAGE TEMPERATURE EFFECTIVE

TYPE VOLTAGE TEST DYNAMIC TEMPERATURE RANGE TEMPERATURE

NUMBER CURRENT IMPEDANCE STABILITY COEFFICIENT

vz@ I

ZT

I

ZT

Z

ZT

∆V

ZT

(Note 3) (Note 1) (Note 2)

VOLTS mA OHMS mV °C % / °C

1N4775 8.5 0.5 200 64 0 to + 75 0.01
1N4775A 8.5 0.5 200 132 -55 to +100 0.01
1N4776 8.5 0.5 200 32 0 to + 75 0.005
1N4776A 8.5 0.5 200 66 -55 to +100 0.005

1N4777 8.5 0.5 200 13 0 to + 75 0.002
1N4777A 8.5 0.5 200 26 -55 to +100 0.002
1N4778 8.5 0.5 200 6.4 0 to + 75 0.001
1N4778A 8.5 0.5 200 13 -55 to +100 0.001

1N4779 8.5 0.5 200 3.2 0 to + 75 0.0005
1N4779A 8.5 0.5 200 6.6 -55 to +100 0.0005
1N4780 8.5 1.0 100 64 0 to + 75 0.01
1N4780A 8.5 1.0 100 132 -55 to +100 0.01

1N4781 8.5 1.0 100 32 0 to + 75 0.005
1N4781A 8.5 1.0 100 66 -55 to +100 0.005
1N4782 8.5 1.0 100 13 0 to + 75 0.002
1N4782A 8.5 1.0 100 26 -55 to +100 0.002

1N4783 8.5 1.0 100 6.4 0 to + 75 0.001
1N4783A 8.5 1.0 100 13 -55 to +100 0.001
1N4784 8.5 1.0 100 3.2 0 to + 75 0.0005
1N4784A 8.5 1.0 100 6.6 -55 to +100 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.

NOTE 3 Zener voltage range equals 8.5 volts +

5%.

1N4775

thru

1N4784A

FIGURE 1

1N4775 thru 1N4784A

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)

0.5 1.0 1.5 2.0
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)