This part is a kind of semiconductor called KBP307.

Function of this product has 3.0A BRIDGE RECTIFIER.

Manufacturers : ETC

Image and pinout :

Some of the text within the PDF file :

KBP301 – KBP307 3.0A BRIDGE RECTIFIER Features ! Diffused Junction ! Low Forward Voltage Drop ! High Current Capability ! High Reliability ! High Surge Current Capability ! Ideal for Printed Circuit Boards Mechanical Data ! Case: Molded Plastic ! Terminals: Plated Leads Solderable per MIL-STD-202, Method 208 ! Polarity: As Marked on Body ! Weight: 1.7 grams (approx.) ! Mounting Position: Any ! Marking: Type Number ! Lead Free: For RoHS / Lead Free Version, AL JB -~~+ KC IH E D G KBP Dim Min Max A 14.22 15.24 B 10.67 11.68 C 15.2 D 3.40 5.00 E 3.60 4.10 G 2.16 2.67 H 0.76 0.86 I 1.20 J 11.68 12.7 K 12.7 L 4.2 x 45° Typical All Dimensions in mm Maximum Ratings and Electrical Characteristics @TA=25°C unless otherwise specified Single Phase, half wave, [ ... ]

KBP307 PDF Datasheet Download