This part is a kind of semiconductor called K2876-01MR.
Function of this product has 2SK2876-01MR.
Manufacturers : Fuji Electric
Image and pinout :
Some of the text within the PDF file :
2SK2876-01MR FAP-IIS Series > Features High Speed Switching Low On-Resistance No Secondary Breakdown Low Driving Power High Voltage VGS = ± 30V Guarantee Repetitive Avalanche Rated N-channel MOS-FET 500V 1,5Ω ±6A 30W > Outline Drawing > Applications Switching Regulators UPS DC-DC converters General Purpose Power Amplifier > Maximum Ratings and Characteristics - Absolute Maximum Ratings (TC=25°C), unless otherwise specified Item Drain-Source-Voltage Continous Drain Current Pulsed Drain Current Gate-Source-Voltage Repetitive or Non-Repetitive (Tch ≤ 150°C) Avalanche Energy Max. Power Dissipation Operating and Storage Temperature Range Symbol V DS ID I D(puls) V GS I AR E AS PD T ch T stg Rating 500 ±6 ±24 ±35 6 196.9 30 150 -55 ~ +150 L=10.0mH,Vcc=50V > Equivalent Circuit [ ... ]