The PJQ5450-AU from PANJIT Semiconductor is a MOSFET with Continous Drain Current 21 A, Drain Source Resistance 26 to 40 milliohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.2 to 2.5 V. Tags: Surface Mount. More details for PJQ5450-AU can be seen below.