The PJQ4442P from PANJIT Semiconductor is a MOSFET with Continous Drain Current 50 A, Drain Source Resistance 6.3 to 10.5 milliohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1 to 2.5 V. Tags: Surface Mount. More details for PJQ4442P can be seen below.