The IPB22N03S4L-15 from Infineon Technologies is a MOSFET with Continous Drain Current 22 A, Drain Source Resistance 12.4 to 19.8 Mohms, Drain Source Breakdown Voltage 30 V, Gate Source Voltage 16 V, Gate Source Threshold Voltage 1 to 2.2 V. Tags: Surface Mount. More details for IPB22N03S4L-15 can be seen below.