MOS N-channel MJD340T4G in 300V 20pcs stock tube new 100% TO-252 effect orginal tube J340G 0.5A field MOS N-channel MJD340T4G in 300V 20pcs stock tube new 100% TO-252 effect orginal tube J340G 0.5A field MOS N-channel MJD340T4G in 300V 20pcs stock tube new 100% TO-252 effect orginal tube J340G 0.5A field MOS N-channel MJD340T4G in 300V 20pcs stock tube new 100% TO-252 effect orginal tube J340G 0.5A field MOS N-channel MJD340T4G in 300V 20pcs stock tube new 100% TO-252 effect orginal tube J340G 0.5A field MOS N-channel MJD340T4G in 300V 20pcs stock tube new 100% TO-252 effect orginal tube J340G 0.5A field MOS N-channel MJD340T4G in 300V 20pcs stock tube new 100% TO-252 effect orginal tube J340G 0.5A field MOS N-channel MJD340T4G in 300V 20pcs stock tube new 100% TO-252 effect orginal tube J340G 0.5A field