The IPD30N03S4L-09 from Infineon Technologies is a MOSFET with Continous Drain Current 30 A, Drain Source Resistance 7.3 to 13.5 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 IPD30N03S4L-09 can be seen below.