The PJW1NA50 from PANJIT Semiconductor is a MOSFET with Continous Drain Current 0.3 A, Drain Source Resistance 7600 to 9000 milliohm, Drain Source Breakdown Voltage 500 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 2 to 4 V. Tags: Surface Mount. More details for PJW1NA50 can be seen below.