The 2SJ305 from Toshiba is a MOSFET with Continous Drain Current -0.2 A, Drain Source Resistance 2400 to 4000 Milliohm, Drain Source Breakdown Voltage -30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage -1.5 to -0.5 V. Tags: Surface Mount. More details for 2SJ305 can be seen below.