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1N4728 Datasheet, PDF (1/3 Pages) Semtech Corporation – SILICON PLANAR POWER ZENER DIODES 
1N4728 thru 1N4764
Zener Diodes
PRODUCT SUMMARY
VZ Range: 3.3 to 100 Volts
Power Dissipation: 1.0 W
FEATURES
Silicon Planar Power Zener Diodes.
For use in stabilizing and clipping circuits with high power
rating.
Standard Zener voltage tolerance is ±10%. Add suffix "A" for
±5% tolerance. Other Zener voltages and tolerances are
available upon request.
These diodes are also available in the MELF case with type
designation 1N4728 thru 1N4764
For bidirectional product, contact local Technical Sales office.
MECHANICAL DATA
Case: DO-41 Glass or DO-41 Plastic Case
Weight: approx. 0.35g
Note:
Suffix: “-P” to order Molded Plastic Package
Suffix: “-G” to order Molded Glass Package
Pb-free; RoHS-compliant
MAXIMUM RATINGS AND THERMAL CHARACTERISTICS
(Ratings at 25oC ambient temperature unless otherwise specified.)
Parameter
Symbol
Value
Unit
Zener current
See Next Page
Power dissipation at Tamb=50oC
Ptot
1.0 (1)
W
Thermal resistance junction to ambient air
RθJA
170 (1)
oC/W
Junction temperature
Tj
175
oC
Storage temperature range
TS
-65 to +175
oC
Notes: 1. Valid provided that electrodes at a distance of 10mm from case are kept at ambient temperature.
02/15/2008 Rev.1.00
www.SiliconStandard.com
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