STB16NM50NMOSFET N-CH 500V 15A D2PAK|STMICROELECTRONICS|Lead free|RoHS Compliant STB21NM50N STB16NM50NMOSFET N-CH 500V 15A D2PAK|STMICROELECTRONICS (VA)|Lead free|RoHS Compliant STB21NM50N