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• 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
µ
A @ 25°C & VR= 6 Vdc
ELECTRICAL CHARACTERISTICS @ 25°C, unless otherwise speci½ed.
JEDEC ZENER ZENER MAXIMUM VOLTAGE TEMPERATURE EFFECTIVE
TYPE VOLTAGE TEST DYNAMIC TEMPERATURE RANGE TEMPERATURE
NUMBER CURRENT IMPEDANCE STABILITY COEFFICIENT
vz@ I ZT I ZT ZZT ³V 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 lZT A 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 speci½ed 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
52
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)
