The PJA3440-AU from PANJIT Semiconductor is a MOSFET with Continous Drain Current 4.3 A, Drain Source Resistance 35 to 51 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 PJA3440-AU can be seen below.