English
Language : 

1N4728 Datasheet, PDF (1/3 Pages) Semtech Corporation – SILICON PLANAR POWER ZENER DIODES 
MCC
  omponents
21201 Itasca Street Chatsworth

  !"#
$ %    !"#
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: -55oC to +150oC
l Storage Temperature: -55oC to +150oC
l For capacitive load, derate current by 20%
Electrical Characteristics @ 25oC Unless Otherwise Specified
DC Power
Dissipation
Peak Forward
Surge Current
Pd
1.0W
TA=100oC
IFSM See Page 2
Thermal
Resistance
RqJA
100oC/W Note 1
Power Derating
from 100oC
Ptot
10mW/oC
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
DO-41G
D
A
Cathode
Mark
B
D
C
DIM
A
B
C
D
DIMENSIONS
INCHES
MM
MIN
MAX
MIN
MAX
0.166 0.205 4.10
7.60
0.080 0.107 2.00
3.60
0.026 0.034 0.70
0.90
1.000
----- 25.40
-----
NOTE
Diameter
Diameter
Version: 3
www.mccsemi.com
2003/01/22