This part is a kind of semiconductor called 1N5917BG.

Function of this product has Axial-Leaded 1.5 Watt Glass Zener Diodes.

Manufacturers : Microsemi Corporation

Image and pinout :

Some of the text within the PDF file :

1N5913BG – 1N5956BG Available Axial-Leaded 1.5 Watt Glass Zener Diodes DESCRIPTION The 1N5913BG-5956BG series of 1.5 watt Zeners provides voltage regulation in a selection from 3.3 to 200 volts with a variety of tolerances available. They are also available in various military equivalent screening levels for high reliability. These glass encapsulated Zeners with a G suffix provide hermetic-sealed qualities and higher rated temperature beyond that optionally provided in equivalent plastic-body constructions (P suffix) for the same JEDEC part numbers. Both package options are available from Microsemi. Screening in reference to MIL-PRF-19500 available Important: For the latest information, visit our website http://www.microsemi.com. FEATURES • JEDEC registered 1N5913B TO 1N5956B numb [ ... ]

1N5917BG PDF Datasheet Download