This part is a kind of semiconductor called 1N4745.

Function of this product has ZENER DIODES.

Manufacturers : General Semiconductor

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1N4728 THRU 1N4764 ZENER DIODES FEATURES DO-41 Glass ♦ 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 ZM4728 thru ZM4764 max. .161 (4.1) min. 1.102 (28.0) max. ∅ 0.102 (2.6) Cathode Mark min. 1.102 (28.0) max. ∅ 0.034 (0.86) MECHANICAL DATA Case: DO-41 Glass Case Weight: approx. 0.35 g Dimensions in inches and (millimeters) MAXIMUM RATINGS Ratings at 25°C ambient temperature unless otherwise specified. SYMBOL VALUE UNIT Zener Current (see Table “Characteristics”) Power Dissipation at Ta [ ... ]

1N4745 PDF Datasheet Download