Thermistors Unlimited is a U.S. manufacturer and customer service-based design center known for developing custom PTC components for demanding thermal applications. Based in St. Marys, Pennsylvania, the company also produces application-specific heater assemblies and supports customers from concept through prototype. Its quality system is certified to ISO 9001:2015, and its PTC heaters carry UL recognition.
ISO 9001:2015
Underwriters Laboratories (UL) Recognition for PTC Heaters
UL
Quality certification