The NTD20N03L27T4G from onsemi is a MOSFET with Continous Drain Current 20 A, Drain Source Resistance 23 to 31 milliohm, Drain Source Breakdown Voltage 30 V, Gate Source Voltage -20 to 20 V, Gate Source Threshold Voltage 1 to 2 V. Tags: Surface Mount. More details for NTD20N03L27T4G can be seen below.