This part is a kind of semiconductor called K2333.
Function of this product has 2SK2333.
Manufacturers : Shindengen
Image and pinout :

Some of the text within the PDF file :
SHINDENGEN HVX-2 Series Power MOSFET N-Channel Enhancement type ( F6F70HVX2 ) 700V 6A FEATURES Input capacitance (Ciss) is small. Especially, input capacitance at 0 biass is small. The static Rds(on) is small. The switching time is fast. Avalanche resistance guaranteed. APPLICATION Switching power supply of AC 240V input High voltage power supply Inverter 2SK2333 OUTLINE DIMENSIONS Case : FTO-220 (Unit : mm) RATINGS Absolute Maximum Ratings iTc = 25j Item Symbol T stg Storage Temperature T ch Channel Temperature VDSS Drain-Source Voltage VGSS Gate-Source Voltage Continuous Drain CurrentiDC j ID I DP Continuous Drain CurrentiPeak) IS Continuous Source CurrentiDC j PT Total Power Dissipation I AR Repetitive Avalanche Current Single Avalanche Energy EAS Repetitive [ ... ]
K2333 PDF Datasheet Download
