This part is a kind of semiconductor called KBP210.

Function of this product has SILICON BRIDGE RECTIFIERS.

Manufacturers : EIC discretes

Image and pinout :

Some of the text within the PDF file :

KBP200 - KBP210 PRV : 50 - 1000 Volts Io : 2.0 Amperes FEATURES : * * * * * * High case dielectric strength High surge current capability High reliability Low reverse current Low forward voltage drop Ideal for printed circuit board SILICON BRIDGE RECTIFIERS KBP 0.71 (18.0) 0.63 (16.0) 0.825 (20.95) 0.605 (15.36) + AC AC 0.035 (0.89) 0.028 (0.71) 0.500 (12.7) MIN. 0.16 (4.00) 0.14 (3.55) 0.276 (7.01 ) 0.236 (5.99) MECHANICAL DATA : * Case : Molded plastic * Epoxy : UL94V-O rate flame retardant * Terminals : Plated lead solderable per MIL-STD-202, Method 208 guaranteed * Polarity : Polarity symbols marked on case * Mounting position : Any * Weight : 3.4 grams 0.105 (2.66) 0.085 (2.16) Dimensions in inches and ( millimeter ) Rating at 25 °C ambient temperature unless otherwise speci [ ... ]

KBP210 PDF Datasheet Download