The PJL9421 from PANJIT Semiconductor is a MOSFET with Continous Drain Current -8.8 A, Drain Source Resistance 14 to 17 milliohm, Drain Source Breakdown Voltage -40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage -2.5 to -1 V. Tags: Surface Mount. More details for PJL9421 can be seen below.