At Thermistors Unlimited we manufacture a broad range of PTC thermistors (Positive Temperature Coefficient) for applications ranging from heater elements to motor temperature validation, to overcurrent protection in electronics. The range of industries is very broad and covers customers in Aerospace, Automotive, Energy, and Defense, along with many others. At Thermistors Unlimited, we specialize in the design and manufacture of PTC elements in many different shapes and sizes, with disc and rectangular being the most popular. In addition, we utilize the many different shapes and sizes available to manufacture unique custom heater assemblies, and our single-sided heaters offer some very important solutions to some of the more complex applications. We pride ourselves on providing a fast turnaround on samples and prototypes.

Although we highlight our custom-made abilities, we do carry standard products that can be purchased and shipped quickly. Datasheets for these standard products are located here. Contact us with questions about our products or to request more information.

To learn more about the science behind PTC thermistors and their various applications visit here.

Our five most popular applications - Standard Heaters, Single-Sided Heaters, Over-Current Protectors, Motor Temperature Sensors, and Over-Temperature Sensors - and part-specific codes can be found under our Applications tabs. Contact us for questions about applications.