This part is a kind of semiconductor called 1N5338A.

Function of this product has SILICON ZENER DIODES.

Manufacturers : EIC discrete Semiconductors

Image and pinout :

Some of the text within the PDF file :

1N5333A - 1N5388A VZ : 3.3 - 200 Volts PD : 5 Watts FEATURES : * Complete Voltage Range 3.3 to 200 Volts * High peak reverse power dissipation * High reliability * Low leakage current SILICON ZENER DIODES D2A 0.161 (4.1) 0.154 (3.9) 1.00 (25.4) MIN. 0.284 (7.2) 0.268 (6.8) MECHANICAL DATA * Case : D2A 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 : 0.645 gram 0.040 (1.02) 0.0385 (0.98) 1.00 (25.4) MIN. Dimensions in inches and ( millimeters ) MAXIMUM RATINGS Rating at 25 °C ambient temperature unless otherw ise specified Rating DC Power Dissipation at TL = 75 °C (Note1) Maximum Forward Voltage at IF = 200 mA Maximum Thermal [ ... ]

1N5338A PDF Datasheet Download