This part is a kind of semiconductor called 2SA1920.
Function of this product has (2SA1870 - 2SA1920) High Voltage Switching Transistor.
Manufacturers : Rohm
Image and pinout :
Some of the text within the PDF file :
w w a D . w S a t e e h U 4 t m o .c w w w a .D S ta e h U 4 t e .c m o w w w .D a S a t e e h U 4 t m o .c [ ... ]
2SA1920 PDF Datasheet Download
