The 561KD14-E0108TB with Varistors through Hole RoHS is a component from Yageo, a major electronics components manufacturer. This device is a varistor, used to protect circuits from over-voltage transients, such as those produced from lightning strikes or in a high-voltage grid. This 561KD14-E0108TB model is designed to fit through-hole installations, and features RoHS (Restriction of Hazardous Substances) compliance. The varistor's specifications include an impulse voltage-clamping of 1400V (peak), 1KA (8/20µs waveform) maximum current pulse, 2KV (AC) surge voltage rating, and a nominal capacitance of 120pF. This part is designed to operate in a temperature range of -40°C to +125°C, has a maximum reflow temperature of 290°C, and has an impedance tolerance of +/- 20%.