The QH8KA4 from ROHM Semiconductor is a MOSFET with Continous Drain Current -9 to 9 A, Drain Source Resistance 9 to 24 Milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -12 to 12 V, Gate Source Threshold Voltage 0.5 to 1.5 V. Tags: Surface Mount. More details for QH8KA4 can be seen below.