1N4749A Datasheet

Silicon Power Zener Diodes


Features, Applications


Silicon Planar Power Zener Diodes For use in stabilizing and clipping circuits with high power rating. Standard Zener voltage tolerance suffix "A" for 5 % tolerance. Other Zener voltages and tolerances are available upon request.

Packaging Codes/Options: / 5k per 13 " reel , 25k/box TAP / 5k per Ammo mag. (52 mm tape), 25k/box

Tamb = 25 �C, unless otherwise specified Parameter Power dissipation Z-current Test condition Tamb 50 �C Symbol Ptot IZ Value 1 PV/VZ Unit W mA

Tamb = 25 �C, unless otherwise specified Parameter Junction temperature Storage temperature range Junction ambient TL = constant Test condition Symbol Tj Tstg RthJA Value 200 100 Unit �C K/W

Tamb = 25 �C, unless otherwise specified Parameter Forward voltage Test condition 200 mA Symbol VF Min Typ. Max 1.2 Unit V

Based on dc-measurement at theral equilibrium while maitaining the lead temperature (TL) + 1 �C, mm (3/8 from the diode body.

Valid provided that electrodes at a distance 10 mm from case are kept at ambient temperature. Additionnal measurement of Voltage group 95 % Vzmin 25 �C

Typical Characteristics (Tamb 25 �C unless otherwise specified)
Figure 1. Admissible Power Dissipation vs. Ambient Temperature



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