YQS5925PTO is a radially-wired bare PTC disc thermistor from the Thermometrics PTO series. It features a resistance of 100 O at 25°C (±30%), a switch temperature of 120°C, and a maximum operating voltage of 240 V. The thermistor has dimensions of 16.51 mm (A max) x 6.86 mm (B max) with a reference thickness of 8.38 mm (C ref), lead wire diameter of 0.8 mm (D ref), and minimum lead length of 38.1 mm. Constructed with a bare ceramic disc, thick silver film electrodes, and uninsulated leadwires, this low-cost solid state sensor exhibits large positive increases in resistance with temperature. Common applications include current regulation, circuit protection, and temperature measurement and control.