The WMF21-5D11MGUU8CB3.5 is a through-hole NTC thermistor manufactured by Tyohm. It is a negative-temperature coefficient (NTC) thermistor, meaning that as temperatures increase, its resistance decreases. The device has a resistance of 11 megohms at 25° C and a Beta of 5100 K. It has a 3.5 mm pitch and is RoHS compliant, meaning it complies with the hazardous materials standards established by the European Union.