The RQ5A040ZP from ROHM Semiconductor is a MOSFET with Continous Drain Current -4 to 4 A, Drain Source Resistance 22 to 110 Milliohm, Drain Source Breakdown Voltage -12 V, Gate Source Voltage -10 to 10 V, Gate Source Threshold Voltage -3 to -1 V. Tags: Surface Mount. More details for RQ5A040ZP can be seen below.