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
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: -65C to +175C
Storage Temperature: -65C to +175C
DC Power Dissipation: 500mW @ +50C
Power Derating: 4 mW / C above +50C
REVERSE LEAKAGE CURRENT
l
R
= 10
A @ 25C & V
R
= 6 Vdc
ELECTRICAL CHARACTERISTICS @ 25C, unless otherwise specified.
JEDEC
ZENER
ZENER
MAXIMUM
VOLTAGE
TEMPERATURE
EFFECTIVE
TYPE
VOLTAGE
TEST
DYNAMIC
TEMPERATURE
RANGE
TEMPERATURE
NUMBER
CURRENT
IMPEDANCE
STABILITY
COEFFICIENT
v
z
@ I
ZT
I
ZT
ZZT
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 l
ZT
A 60Hz rms
a.c. current equal to 10% of l
ZT
.
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 l
ZT
(mA)
FIGURE 4
TYPICAL CHANGE OF TEMPERATURE COEFFICIENT
WITH CHANGE IN OPERATING CURRENT
+.0015
+.0010
+.0005
0
-.0005
-.0010
-.0015
CHANGE
IN
TEMPERA
TURE
COEFFICIENT
(
%/C)
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