Thermistors Unlimited, Inc. is a manufacturer of PTC Thermistors and PTC Heater Products and Assemblies.  Thermistors Unlimited is a customer service-based manufacturing and design center for all your PTC thermistor applications.  

Thermistors Unlimited traces it's roots back to the PTC Thermistor product line of Advanced Thermal Products (1991 to 2006), the PTC Thermistor product line of Spectrum Sensors & Controls (2006 to 2012), and to the PTC Thermistor product line from RTI Electronics (Anaheim, CA).  [All PTC thermistor products built by RTI Electronics over the years will be supported by Thermistors Unlimited].  TU incorporated in January 2015, and they look to focus on both standard and custom PTC Thermistor Products.   

The vision that we have here at Thermistors Unlimited is to continue to support all PTC thermistor products developed in the past, (including the PTC Products from Advanced Thermal Products, Spectrum Sensors & Controls, and RTI Electronics), but also to help develop new products via our present relationships and the many new relationships that we look to develop in the years to come.

Thermistor Products' Prior Business Entities That We Can and Do Support:

1991 - 2006:   Advanced Thermal Products

2006 - 2014:  RTI Electronics and Spectrum Sensors & Controls 

Greg Stauffer
President