This part is a kind of semiconductor called SS4002.
Function of this product has (SS4001 - SS4007) 1.0 AMP SURFACE MOUNT SILICON RECTIFIERS.
Manufacturers : GW
Image and pinout :
Some of the text within the PDF file :
SS4001 THRU SS4007 1.0 AMP SURFACE MOUNT SILICON RECTIFIERS VOLTAGE RANGE 50 to 1000 Volts CURRENT FEATURES * Ideal for surface mount applications * Easy pick and place * Built-in strain relief * High surge current capability 1.0 Ampere SS .106(2.7) .098(2.5) .051(1.3) .043(1.1) MECHANICAL DATA * Case: Molded plastic * Epoxy: UL 94V-0 rate flame retardant * Terminals: Solder plated, solderable per MIL-STD-202F, method 208 guranteed * Polarity: Color band denotes cathode end * Mounting position: Any .037(0.95) .033(0.85) .144(3.65) .136(3.45) .007(0.17) .005(0.13) .067(1.7) .059(1.5) .033(0.85) .022(0.55) Dimensions in inches and (millimeters) MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Rating 25 C ambient temperature uniess otherwies specified. Single phase half wave, 60Hz, r [ ... ]