ON Semiconductor 1N53 series is Surmetic™ 40 axial-leaded 5 Watt zener diode This axial lead device features a molded package which is void-free transfer−molded, thermosetting plastic, offers protection in most common environmental conditions, The voltage regulator has tight limits and better operating characteristics that reflect the superior capabilities of silicon-oxide passivated junctions. The external surfaces are corrosion resistant and leads are readily solderable

Industrial

This is a complete series of 5.0 Watt Zener Diode Voltage Regulators with tight limits and better operating characteristics that reflect the superior capabilities of silicon-oxide passivated junctions. All this is in an axial-lead, transfer-molded plastic package that offers protection in all common environmental conditions.

Up to 180 Watt Surge Rating @ 8.3 ms
Maximum Limits Guaranteed on Seven Electrical Parameters
CASE: Void-free, transfer-molded, thermo-setting plastic
FINISH: All external surfaces are corrosion resistant and leads are readily solderable
POLARITY: Cathode indicated by color band. When operated in zener mode, cathode will be positive with respect to anode.
MOUNTING POSITION: Any
WEIGHT: 0.7 gram (approx)

Zener Diodes, ON Semiconductor