The 3N161 from CALOGIC is a MOSFET with Continous Drain Current 50 mA, Drain Source Breakdown Voltage -25 V, Gate Source Voltage -4.5 to -8 V, Gate Source Threshold Voltage -1.5 to -5 V, Power Dissipation 375 mW. Tags: Through Hole. More details for 3N161 can be seen below.