SUM27N20-78 SUM27N20-78 MOS(场效应管) SUM27N20-78-E3 SUM27N20-78-E3-VB SUM27N20-78-VB SUM2G8Z22AD8VA-SSMB SUM2P02-C SUM3000RMXL2U SUM318 SUM318-VB