Temperature Sensor Engineering Modules ISO 9001:2008 Quality Management Systems Certification
"Our Goal is to be the best thermistor manufacturer in the world with a strong commitment to quality and a continued vision to the future."
-U.S. Sensor Corp.


Littelfuse/U.S. Sensor is a world-class manufacturer of an extensive variety of the highest quality thermistors as well as thermistor and RTD (Resistance Temperature Detectors) probes and assemblies. Our products are used in industries ranging from automotive, consumer electronics, food handling and processing to medical electronics, military/defense and aerospace. Customers worldwide use our temperature sensors in their most demanding temperature sensing applications.

The company's product lines include NTC (Negative Temperature Coefficient) and PTC (Positive Temperature Coefficient) thermistors and probe assemblies as well as Thin Film Platinum RTDs, and RTD probes and assemblies. Littelfuse/U.S. Sensor manufactures its products using sophisticated state-of-the-art processing techniques. The excellent long-term stability of our products coupled with precision interchangeability and low cost makes them ideally suited for temperature sensing applications. Littelfuse/U.S. Sensor thermistor and RTD products are available in a wide variety of styles to suit countless circuit requirements.


To assure that we maintain its competitive edge in the temperature sensing marketplace and continues to provide thermistors, thermistor probes and assemblies as well as RTDs and RTD probes and assemblies that exceed its customers' requirements, the company continues to make substantial investments in the most advanced component manufacturing equipment as well as in research and development of manufacturing processes that result in new and innovative products.


Littelfuse/U.S. Sensor applications engineers are highly trained professionals who will assist you to choose the component you need from our array of standard thermistors or RTDs, or assist in the design of a special probe or assembly or your most exacting requirement. Whether your application requires a simple thermistor sensor, a probe assembly, or a complex network which will exhibit non-standard resistance temperature characteristics particularly suited to your requirements, our application engineering personnel will be most helpful. Littelfuse/U.S. Sensor personnel have been providing temperature sensors for the most demanding applications for more than thirty years.


All of our thermistors, RTDs, and thermistor and RTD probe assemblies are produced using SPC (statistical process control) techniques throughout the manufacturing processes in an endless loop of quality improvement. Total Quality Management is our pledge. The Littelfuse/U.S. Sensor Quality System is certified to ISO 9001: 2008.


Most of the standard thermistor sensors and RTDs offered on our website are available mounted in special probe housings suited for temperature sensing under the most demanding environmental conditions. Our standard probe housings range in size from less than 0.020" diameter to over 0.375" diameter and are constructed from various materials including stainless steel, aluminum, epoxy, polyimide, and PVC just to name a few. Detailed descriptions of some of our standard probe housings are shown in the Products section of our website.

For any questions about the thermistor and RTD probes and assemblies we have available on the website, feel free to contact our applications engineering team.

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Thermistor Application Form – Contact US
U.S. Sensor Corp.
(800) 777-6467
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