The 2N6661 from Microchip Technology is a MOSFET with Continous Drain Current 0.35 A, Drain Source Resistance 4000 to 5000 milliohm, Drain Source Breakdown Voltage 90 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 0.8 to 2 V. Tags: Through Hole. More details for 2N6661 can be seen below.