MBRB2045STRLPBF MBRB205+0CT MBRB2050CT MBRB2050CT-E3/45 MBRB2050CT-E3/81 MBRB2050CTHE3/45 MBRB2050CTHE3/81 MBRB2050CTPBF MBRB2060 MBRB2060 MOS(场效应管)