ECThe 20D270K is a through-hole 20mm radial disc-shaped varistor manufactured by COVEC. It has voltage ratings ranging from 22V to 53V, and is RoHS-compliant. It belongs to the MKV series of varistors, and provides maximum peak current of 10KA (8/20µs), absorption ratio of 3A min (23V/10V), insulation resistance of > 100MO, and capacitance of1800pF. It is mainly used to provide ESD protection and mains voltage protection.