The QS6M4 from ROHM Semiconductor is a MOSFET with Continous Drain Current -1.5 to 1.5 A, Drain Source Resistance 155 to 430 Milliohm, Drain Source Breakdown Voltage -20 to 30 V, Gate Source Voltage -12 to 12 V, Gate Source Threshold Voltage -2 to 1.5 V. Tags: Surface Mount. More details for QS6M4 can be seen below.