2SA1645-K-AZ 2SA1645-L-AZ 2SA1645-M-AZ 2SA1645Z 2SA1645-Z 2SA1645-Z-E1 2SA1645-Z-E1-AZ 2SA1646 2SA1646 MOS(场效应管) 2SA1646(0)-Z-E1-AZ