The LLFMLC6-52K608A is a multi-constant, high-current limiting, positive temperature coefficient (PTC) resettable over-current protection device developed by LG. It is designed to limit the current flowing through its terminals in the event of an over-current condition, while also providing circuit resetting after the fault has been cleared. The device features a wide operating temperature range of -40°C to +85°C and is available in an SOT-23 package. It has a maximum current rating of 52kA, with a minimum hold current rating of 6mA. The device is widely used to protect circuits from over-current, over-voltage, and short-circuiting, and is typically found in automotive, power supply, and telecommunications applications.