TechnologyThe FNR-10K431 is a varistor manufactured by Fenghua Advanced Technology. It is a through-hole, RoHS-compliant device with a voltage rating of between 350V and 710V and has a rated energy dissipation of 2.5KA. The varistor is used to protect circuits from transient events, such as those caused by lightning, power surges, and electrostatic discharge. It is typically used in AC/DC power supplies, household appliances, communications equipment, automotive electronics, and consumer electronics.