The P1B52HP2 from Shindengen America is a MOSFET with Continous Drain Current 1 A, Drain Source Resistance 6000 to 7200 milliohm, Drain Source Breakdown Voltage 525 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 3 to 4.5 V. Tags: Surface Mount. More details for P1B52HP2 can be seen below.