The PJD55N03 from PANJIT Semiconductor is a MOSFET with Continous Drain Current 55 A, Drain Source Resistance 6.2 to 13 milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1 to 2.5 V. Tags: Surface Mount. More details for PJD55N03 can be seen below.