This part is a kind of semiconductor called SB3150.

Function of this product has (SB320 - SB3200) SCHOTTKY BARRIER RECTIFIERS.

Manufacturers : CTC

Image and pinout :

Some of the text within the PDF file :

Compact Technology SB320 thru SB3200 REVERSE VOLTAGE - 20 to 200 Volts FORWARD CURRENT - 3.0 Amperes SCHOTTKY BARRIER RECTIFIERS FEATURES Metal-Semiconductor junction with guard ring Epitaxial construction Low forward voltage drop High current capability The plastic material carries UL recognition 94V-0 For use in low voltage,high frequency inverters,free wheeling,and polarity protection applications A DO-201AD B A C D MECHANICAL DATA Case : JEDEC DO-201AD molded plastic Polarity : Color band denotes cathode Weight : 1.071grams Mounting position : Any Dim. A B DO-201AD Min. Max. 25.4 8.50 1.20 9.50 1.30 5.60 C 5.0 D Dimensions in millimeters MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS Ratings at 25̺ ambient temperature unless otherwise specified. Single phase, half wave, 60Hz [ ... ]

SB3150 PDF Datasheet Download