The BS250F from Diodes Incorporated is a MOSFET with Continous Drain Current -0.09 A, Drain Source Resistance 9000 to 14000 milliohm, Drain Source Breakdown Voltage -45 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage -3.5 to -1 V. Tags: Surface Mount. More details for BS250F can be seen below.