This B72214S0421K503 Varistor by TDK is a radial leaded disc varistor for transient surge suppression in electronic equipment and home appliances. It offers surge current specification up to 1500A (8/20µs, based on IEC 61000-4-5). This through-hole LED has a wide resistance range, low capacitance, and an operating temperature range of -55°C to +85°C primarily used for protecting against electrical transients, over voltage and phase switching. It is RoHS-compliant, halogen-free, and UL1449 recognized.