The TN2501 from Microchip Technology is a MOSFET with Continous Drain Current 0.4 A, Drain Source Resistance 2500 to 25000 milliohm, Drain Source Breakdown Voltage 18 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 0.3 to 1 V. Tags: Surface Mount. More details for TN2501 can be seen below.