The FDB52N20TM from onsemi is a MOSFET with Continous Drain Current 52 A, Drain Source Resistance 41 to 49 milli-ohm, Drain Source Breakdown Voltage 200 V, Gate Source Voltage -30 to 30 V, Gate Source Threshold Voltage 3 to 5 V. Tags: Surface Mount. More details for FDB52N20TM can be seen below.