The FK4B01100L from Panasonic Corporation is a MOSFET with Continous Drain Current 6.5 A, Drain Source Resistance 22 to 99 Milliohm, Drain Source Breakdown Voltage 12 V, Gate Source Voltage -8 to 8 V, Gate Source Threshold Voltage 0.3 to 1 V. Tags: Chip. More details for FK4B01100L can be seen below.