The RFD12N06RLESM9A from onsemi is a MOSFET with Continous Drain Current 18 A, Drain Source Resistance 52 to 75 mohms, Drain Source Breakdown Voltage 50 V, Gate Source Voltage -16 to 16 V, Gate Source Threshold Voltage 1 to 3 V. Tags: Surface Mount. More details for RFD12N06RLESM9A can be seen below.