The QN3108M3N from uPI Semiconductor is a MOSFET with Continous Drain Current 18 to 109 A, Drain Source Resistance 1.5 to 2.9 milli-ohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1.2 to 2.5 V. Tags: Surface Mount. More details for QN3108M3N can be seen below.