Technical Blog

What does NTC Mean?

NTC is an acronym used with various definitions. When we are discussing NTCs we are referring to a type of temperature sensor; an NTC thermistor. In this instance, NTC defines as “Negative Temperature Coefficient”.

Thermistors measure temperature by measuring the resistance of the electrical energy passing through the thermistor which is relative to temperature. Negative Temperature Coefficient defines that as the resistance decreases the temperature increases and vice versa. Positive Temperature Coefficient (PTC) thermistors are also available and conversely the resistance increases as the temperature increases.

An NTC thermistor is a very small temperature detecting device.  They are part of our product portfolio here at Variohm. They can be used as a “stand-alone” component or can be incorporated into differing housings to form bespoke temperature probes.

What is an NTC Thermistor used for?

NTC thermistors are very diverse and are therefore used in many different applications, for example;

  • Microwave Ovens and other domestic appliances use thermistors to ensure they don’t over-heat
  • Boilers – all boilers use thermistors to monitor the temperature
  • Digital thermometers – thermistors are used as the internal temperature sensing element
  • Manufacturing - NTC thermistors are used as circuit breakers in manufacturing facilities
  • HVAC applications - thermistors are used in various HVAC applications and appliances
  • 3D Printers – NTC thermistors are used to ensure temperatures are regulated
  • Medical Applications – patient monitoring as well as device maintenance
  • Food handling – thermistors are used within food handing to ensure hygiene regulations can be monitored


Advantages of using an NTC Thermistor

NTC thermistors have many advantages which make them suitable for use in different industries and applications;

  • Highly sensitive
  • Well suited to small temperature ranges
  • Low cost making them cheap to replace
  • Fast response
  • Ease of use
  • Small in size
  • Customisation available
  • Highly compatible
  • Glass or epoxy coated

NTC Thermistors from Variohm

We have a wide range of NTC thermistors available. They can be seen on our website. Thermistors are available with different resistance values which suit different application requirements and preferences.

We have our own range of thermistors which have recently been added to our website

If you have applications for NTC thermistors or would like more information please contact us.

Article published on: 26/06/2020