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