The Songtian STE20D180K1DN0FSB0R0 with Varistors 14V 36V 2KA Through Hole RoHS is a high-performance varistor designed to provide protection against transient overvoltage and surges caused by induced lightning, capacitive and inductive loads, and switching transients. It is composed of a zinc-oxide ceramic body containing metal oxide particles, enclosed in an epoxy shell. This varistor is rated for 14V to 36V, and designed for an operating current up to 2KA peak. The product features high surge current capacity and has a RoHS compliant finish. It is through-hole mounted and can be used in a wide range of applications, including automotive electronic control units, power supplies, battery chargers, and telecom power supplies.