WMZ11A-85S200-300UP011B3.5-E5B is a PTC thermistor manufactured by Tyohm that operates as a switch or temperature sensor. Its RoHS compliance indicates that the product has been manufactured and tested to ensure it is free of lead, mercury, cadmium, and other hazardous substances. The number “85S200” indicates that the thermistor has a resistance of 200 ohms when it is at a cold temperature. As it is heated, its resistance increases drastically. This thermistor is designed to be used as a through-hole component instead of being soldered into place. It has a rated power dissipation of 11 watts, a rated voltage of 3.5 volts, and an operating temperature range of -55°C to +125°C.