The QH8KB5 from ROHM Semiconductor is a MOSFET with Continous Drain Current 4.5 A, Drain Source Resistance 34 to 74 milliohm, Drain Source Breakdown Voltage 40 V, Gate Source Voltage 20 V, Gate Source Threshold Voltage 1 to 2.5 V. Tags: Through Hole. More details for QH8KB5 can be seen below.