The PJS6421-AU from PANJIT Semiconductor is a MOSFET with Continous Drain Current -7.4 A, Drain Source Resistance 21 to 40 milliohm, Drain Source Breakdown Voltage -20 V, Gate Source Voltage -10 to 10 V, Gate Source Threshold Voltage -1 to -0.3 V. Tags: Surface Mount. More details for PJS6421-AU can be seen below.