The Liown 201KD05 varistors are radial leaded electronic components designed to be used in the suppression of transient overvoltages. They are rated at 355V, 0.1W, 125pF @ 1kHz, 170V, 6.5J, 130V, 200V, and 400A. These varistors are RoHS compliant and are RoHS-certified for use in electronic and electrical systems.These varistors can be used to control voltage drops and spikes in the power supply that may occur due to common EMI/RFI effects. In addition, they are used to protect exposed parts of electrical systems from high-voltage surges and transients. Such processes may pose a fire risk if not properly managed. The varistors can also reduce the chance of a catastrophic failure in sensitive electrical components.