B72220S2621K503 is a Varistor Through Hole RoHS manufactured by TDK. This RoHS-compliant electronic component is built to be used in a variety of applications, including surge protection, over-voltage protection, and general circuit protection. The component has a voltage rating of 591 VAC, a tolerance of ±20%, and a capacitance range of 21.2pF. It also has an operating temperature range of -30 °C to +85 °C and a lead time of 12 weeks. This varistor is a radial leaded, through-hole mount type for easy installation. Furthermore, the product is RoHS compliant, meaning that it does not contain hazardous materials. This makes it both safe to use and environmentally friendly.