The FTR20D431K is a varistor manufactured by FTR. This varistor has a through hole construction and a 10mm pitch. It has a rated voltage of 350V or 710V and a rated current of 6.5KA. Additionally, it is RoHS compliant. This part is used in applications to protect against excessive voltage transients and provides protection against overvoltage, overcurrent, and overheat. It is ideal for use in consumer electronics, automotive, home appliances, and other applications.