The FC6B21100L from Panasonic Corporation is a MOSFET with Drain Source Resistance 3.4 to 11 milliohm, Drain Source Breakdown Voltage 12 V, Gate Source Voltage 8 V, Gate Source Threshold Voltage 0.35 to 1.4 V, Gate Charge 42 nC. Tags: Chip. More details for FC6B21100L can be seen below.