DS G TO-220FB-3L G DS TO-263-2L Applications * Switching application * Power Management for Inverter Systems. Ordering and Marking Information N-Channel MOSFET P HY3506 YYXXXJWW G B HY3506 YYXXXJWW G Package Code P : TO-220FB-3L Date Code YYXXX WW B: TO-263-2L Assembly Material G : L.