The P3B28HP2 from Shindengen America is a MOSFET with Continous Drain Current 3 A, Drain Source Resistance 1700 to 2100 milliohm, Drain Source Breakdown Voltage 280 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 3 to 4.5 V. Tags: Surface Mount. More details for P3B28HP2 can be seen below.