This part is a kind of semiconductor called 1M0380R.

Function of this product has KA1M0380R.

Manufacturers : Fairchild

Image and pinout :

Some of the text within the PDF file :

www.fairchildsemi.com KA1L0380B/KA1L0380RB/KA1M0380RB/ KA1H0380RB Fairchild Power Switch(SPS) Features • • • • • • • • • • • Precision fixed operating frequency KA1L0380B/KA1L0380RB (50KHz) KA1M0380RB (67KHz) KA1H0380RB (100KHz) Pulse by pulse over current limiting Over load protection Over voltage protection (Min. 23V) Internal thermal shutdown function Under voltage lockout Internal high voltage sense FET Auto restart (KA1L0380RB/KA1M0380RB/KA1H0380RB) Description The SPS product family is specially designed for an off-line SMPS with minimal external components. The SPS consist of high voltage power SenseFET and current mode PWM controller IC. PWM controller features integrated fixed oscillator, under voltage lock out, leading edge blanking, optimized gate turn-on [ ... ]

1M0380R PDF Datasheet Download