The CRL10W-R27 is a radial leaded metal oxide varistor manufactured by SR Passives. It is a nonlinear, bidirectional semiconductor device that works by limiting or diverting fault currents during overvoltage transients. It features a non-inductive construction, high peak current ratings, and low capacitive current. Its 10mm radial style package has a 10mm x 10mm x 3.7mm footprint, making it ideal for a variety of applications including power supplies, UPS systems, and EMI/RFI filtering. It is rated up to 275VAC, 25J peak energy, and can dissipate up to 30A. It also has a maximum surge current of 500A and is RoHS compliant.