The FC6B21810L from Panasonic Corporation is a MOSFET with Drain Source Resistance 2.9 to 13.8 milliohm, Drain Source Breakdown Voltage 12 V, Gate Source Voltage 8 V, Gate Source Threshold Voltage 0.35 to 1.4 V, Gate Charge 15 nC. Tags: Chip. More details for FC6B21810L can be seen below.