Features
l Hermetic Glass Package
l Silicon Planar Zener Diodes
l These diodes are also available in the MELF case with type
designation DL4728 thru DL4764.
Mechanical Data
l Case: DO-41 Molded Glass
l Polarity: is indicated by cathode band.
l Weight: 0.378 grams (Approx.)
Maximum Ratings
l Operating Temperature: -55
o
C to +150
o
C
l Storage Temperature: -55
o
C to +150
o
C
l For capacitive load, derate current by 20%
Electrical Characteristics @ 25
o
C Unless Otherwise Specified
DC Power
Dissipation
P
d
1.0W T
A
=100
o
C
Peak Forward
Surge Current
I
FSM
See Page 2
Thermal
Resistance
100
o
C/W Note 1
Power Derating
from 100
o
C
P
tot
10mW/
o
C
Note: (1) Valid provided that electrodes at a distance
of 10mm from case are kept at ambient
temperature.
1N4728

THRU
1N4764
1.0 Watt
Zener Diode
3.3 to 100 Volts
A
B
C
D
D
Cathode
Mark
MIN MAX MIN MAX
A 0.166 0.205 4.10 7.60
B 0.080 0.107 2.00 3.60 Diameter
C 0.026 0.034 0.70 0.90 Diameter
D 1.000 ----- 25.40 -----
DIMENSIONS
DIM
INCHES MM
NOTE
DO-41G
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MCC
Version: 3 2003/01/22