This part is a kind of semiconductor called S16C45C.

Function of this product has SCHOTTKY BARRIER RECTIFIERS.

Manufacturers : Compact Technology

Image and pinout :

Some of the text within the PDF file :

SCHOTTKY BARRIER RECTIFIERS S16C20C thru S16C200C REVERSE VOLTAGE - 20 to 200 Volts FORWARD CURRENT - 16.0 Amperes .055(1.4) .043(1.1) .026(0.68) .014(0.36) 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 MECHANICAL DATA Case : TO-220AB molded plastic Polarity : Color band denotes cathode Weight : 1.948 grams Mounting position : Any .129(3.3) .1(2.54) TO-220AB .403(10.26) .385(9.8) .153(3.9) .145(3.7) .189(4.82) .173(4.4) .251(6.4) .228(5.8) .624(15.87) .578(14.7) .549(13.96) .499(12.7) .388(9.87) .250(6.35) .036(0.92) .051(1.3) .028(0.72) .045(1.16) . [ ... ]

S16C45C PDF Datasheet Download