This part is a kind of semiconductor called KBP307.

Function of this product has SINGLE PHASE 3.0 AMP BRIDGE RECTIFIERS.

Manufacturers : ETC

Image and pinout :

Some of the text within the PDF file :

KBP301 THRU KBP307 SINGLE PHASE 3.0 AMP BRIDGE RECTIFIERS FEATURES * Ideal for printed circuit board * Low forward voltage * Low leakage current * Polarity: marked on body * Mounting position: Any * Weight: 2.74 grams * Both normal and Pb free product are available: * Normal:80~95%Sn,5~20%Pb * Pb free:99 Sn above can meet Rohs enviroment substance directive request VOLTAGE RANGE 50 to 1000 Volts CURRENT 3.0 Ampere .125 45 C .(3.2) .500(12.7) .460(11.7) KBP .460(11.7) .420(10.7) .035(0.9) .028(0.7) DIA. .50 (12.7) MIN. .160(4.1) .140(3.6) SPACING .253(3.9) .146(3.7) .600(15.2) .560(14.2) .053(1.35) .045(1.15) Dimensions in inches and (millimeters) MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Rating 25 C ambient temperature uniess otherwies specified. Single phase half wave, [ ... ]

KBP307 PDF Datasheet Download