The QS8K13 from ROHM Semiconductor is a MOSFET with Continous Drain Current -6 to 6 A, Drain Source Resistance 20 to 39 Milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1 to 2.5 V. Tags: Surface Mount. More details for QS8K13 can be seen below.