In a conventional power circuit device, such as a power MOSFET monolithic integrated circuit device and a compound device, since five lead pins are lead out from the packaging with even intervals, sufficient separation distances between the third pin of a high voltage and other adjacent pins cannot be...http://www.google.com.hk/patents/US20040026770?utm_source=gb-gplus-share專利 US20040026770 - Power source circuit device