The TK3P80E from Toshiba is a MOSFET with Continous Drain Current 3 A, Drain Source Resistance 3900 to 4900 Milliohm, Drain Source Breakdown Voltage 800 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 2.5 to 4 V. Tags: Surface Mount. More details for TK3P80E can be seen below.