This part is a kind of semiconductor called 1N5922.

Function of this product has SILICON ZENER DIODES.

Manufacturers : EIC

Image and pinout :

Some of the text within the PDF file :

www.eicsemi.com 1N5913 - 1N5956 VZ : 3.3 - 200 Volts PD : 1.5 Watts FEATURES : * Complete Voltage Range 3.3 to 240 Volts * High peak reverse power dissipation * High reliability * Low leakage current * Pb / RoHS Free MECHANICAL DATA * Case : DO-41 Molded plastic * Epoxy : UL94V-O rate flame retardant * Lead : Axial lead solderable per MIL-STD-202, method 208 guaranteed * Polarity : Color band denotes cathode end * Mounting position : Any * Weight : 0.335 gram MAXIMUM RATINGS Rating at 25 °C ambient temperature unless otherwise specified Rating Maximum Steady state Power Dissipation @ TL = 75 ºC, Lead Length = 3/8" Operating and Storage Temperature Range SILICON ZENER DIODES DO - 41 0.108 (2.74) 0.078 (1.99) 0.034 (0.86) 0.028 (0.71) 1.00 (25.4) MIN. 0.205 (5.20) 0.161 (4.10) 1.00 (25. [ ... ]

1N5922 PDF Datasheet Download