The UN301P23T from UN Semiconductor is a MOSFET with Continous Drain Current -4.2 A, Drain Source Resistance 41 to 70 milli-ohm, Drain Source Breakdown Voltage -30 V, Gate Source Voltage -12 to 12 V, Gate Source Threshold Voltage -0.7 to -1.3 V. Tags: Surface Mount. More details for UN301P23T can be seen below.