What is a Thermistor (NTC)?

A thermistor is a device whose electrical resistance is controlled by temperature. Thermistors are available in two types: NTC thermistors, or negative thermal coefficient thermistors, and PTC thermistors, or positive thermal coefficient thermistors. In NTC thermistors, the resistance decreases proportionally with increases in temperature. PTC thermistors, on the other hand, have increasing resistance with increasing temperature.

Types of Thermistors

There are many different kinds of thermistors and at Future Electronics we stock many of the most common types categorized by Type, Resistance, Tolerance, Rated Current, B-constant, Packaging type and Temperature Range. The parametric filters on our website can help refine your search results depending on the required specifications.
The most common sizes for Resistance are 10 kΩ, and 100 kΩ. We also carry thermistors with Resistance as high as 7.5 MΩ. Rated Current can be as high as 310 A.

Thermistors from Future Electronics


Future Electronics has a full selection of thermistors of all types and sizes from different suppliers when looking for a waterproof thermistor, high temperature sensor thermistor, surface mount thermistor or to design any circuit requiring a thermistor. Simply choose from the thermistor technical attributes below and your search results will quickly be narrowed to match your specific thermistor application needs.
We deal with EPCOS, GE Measurement & Control, Murata, Panasonic or Vishay, among other manufacturers. You can easily refine your thermistor product search results by clicking your preferred thermistor brand below from our list of manufacturers.

Applications for Thermistors:

Thermistors can be used in all types of applications including:
  • Circuit protection

  • CRT displays
  • Heater in automotive applications
  • Power supply circuits
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  • Digital thermostats

  • 3D printers
  • Food preparation and storage
  • Appliances

Choosing the Right Thermistor:

When you are looking for the right thermistors, with the Future Electronics.com parametric search, you can filter the results by various attributes: by Type (NTC, PTC), Resistance (200 mΩ, 10 kΩ, 100 kΩ,…) and Rated Current (0.06 mA, 0.31 mA, 100 mA, 1.6 A to name a few. You will be able to find the right thermistors of different sizes and types when looking for a high temperature sensor thermistor, waterproof thermistor, surface mount thermistor or for any circuit design requiring a thermistor.

Thermistors in Production Ready Packaging or R&D Quantities

We offer customers many of our products in quantities that will avoid unneeded surplus.
In addition, Future Electronics offers clients a unique bonded inventory program that is designed to eliminate potential problems that may arise from an unpredictable supply of products containing raw metals and products with erratic or long lead times. Talk with your nearest Future Electronics branch and find out more on how you and your company can avoid possible shortages.