The ED35S20F202 is a PTC (Positive Temperature Coefficient) thermistor manufactured by EI Sensor Technologies, designed for temperature sensing and thermal protection in electronic circuits. It features glass encapsulation with tinned solderable lead wires (0.0197" ± 0.002" diameter) and exhibits a resistance of 2,000 O ± 1% at +25°C, with a dissipation constant of 1.5 mW/°C minimum in air and a thermal time constant of 15 seconds nominal. The device is rated for a maximum temperature of +150°C and is RoHS compliant. Common applications include overcurrent protection, temperature compensation, and thermal management in consumer electronics, industrial controls, and power supply circuits.