The PJQ5448-AU from PANJIT Semiconductor is a MOSFET with Continous Drain Current 50 A, Drain Source Resistance 9 to 15 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 PJQ5448-AU can be seen below.