The RM10D680KD1IE100 is a radial leaded varistor manufactured by Dersonic that complies with ROHS standards. It has a rated voltage of 135V, power rating of 0.05W, energy rating of 8.2J, capacitance of 1500pF at 1kHz, and AC and DC breakdown voltages of 56V, 40V and 68V respectively, as well as a surge current rating of up to 250A. It is housed in a package with a pitch of 7.5mm.