Glass High Temp NTC Thermistors

An NTC thermistor responds to a change in temperature of its surroundings and in doing so, its resistance either lowers or increases accordingly until it stabilises at the new temperature reached.

The resistance change of the NTC is measured by a suitable electronic circuit that is pre-programmed with the thermistor’s resistance values which it then converts into a temperature reading.

If the circuit is part of a thermometer, the new temperature is simply displayed.  If it is part of a control circuit, the electronics activates a heater or a cooler to bring the temperature back to the set-point on the controller.

Thermistors are popular for temperature measurement due to several key advantages:

• Greater resolution due to a higher resistance change per degree of temperature
• High repeatability and stability.
• Excellent interchangeability.
• Fast response to temperature changes due to small size.

To view the full range of ATC Semitec’s NTC Thermistors click here

ATC Semitec also stock a wide range of temperature sensor assemblies which use NTC Thermistors as the temperature sensing element.

We have an array of thermistors suitable for medical temperature sensing, with our F-Micro Miniature Thermistor having a multitude of applications due to its small size and precise design. These allow it to be easily supplied in tubes as small as 0.28mm, and combined with a high thermal accuracy of 0.14K at 37°C make it our most advanced thermistor available.                                                                                                           

For non-contact applications, the NC temperature sensor utilises the latest FT thermistor technology to sense infrared energy with a high signal strength.

For a full range of our products suitable for medical applications, click here.

Have a question or need a sample ? Call one of our engineers today on 01606 871680 or complete our contact form

There is no easy formula in deciding which is the best NTC thermistor for your application as there are many different factors to take into consideration.

Factors to take into consideration include levels of accuracy, resistance values, shapes and size.

At ATC Semitec we have more than 25 years of experience in providing thermal solutions for industry. Give us a call today for expert technical advice, and to request samples.

Call 01606 871680 or complete our contact form

Owing to the very small size that NTC thermistor chips can be manufactured to, they can be packaged in numerous form factors to best suit an engineer’s application. NTC thermistors’ high TCR (change in resistance versus temperature) also helps to simplify electronic circuitry making them inexpensive to employ.

Variables may include need for higher temperatures, accuracies, fast Tc, ease of placement during their manufacturing etc etc.

NTC thermistors can be supplied in different configurations/housings depending on your applications:

Epoxy coated generally for lower temperature use (-60°C to +150°C), and are lower cost.

Glass encapsulated ideal for use in high temperature applications ( -50°C to +350°C).

Within temperature probe assemblies – with IP67 or IP68 ratings if required.

SMD (surface mount) packages down to 0201 size, for space saving applications.

Threaded or boss mounted, metal encapsulated temperature sensors assemblies.

Have a question or need a sample ? Call one of our engineers today on 01606 871680 or complete our contact form

Due to their sensitivity to change in temperature, fast response times and reliability, NTC thermistors are used in a large number of temperature sensors in everyday life and include :-

• Home appliances (Temperature control of ovens and fridges)
• Personal care (Hair-dryers, stylers)
• Medical devices (Catheters, thermometers, glucose monitors)
• Smart devices/IOT products (Home automation, domotics)
• Battery monitoring (Overcharge, over-discharge)
• Automotive/E-Vehicles (Cabin temp, battery monitoring, EGR)
• HVAC appliances (Air temperature, condenser temps)
• Fire & security (Heat detectors, smoke detectors)
• Office automation (Copier & laser printer fuser rollers)

Some larger disc NTC thermistors (or power thermistors) are used for current inrush limiting.  They offer a neat, cost-effective solution to surge currents arising from switching on some electronic or electrical products, e.g. Switch Mode Power Supplies, LED drivers and halogen lamps or heaters.

Have a question or need a sample?  Call one of our engineers today on 01606 871680 or complete our contact form

NTC thermistors have a high temperature coefficient of resistance (TCR), are very stable and have excellent repeatability.

Readily available in numerous form factors, they are also;

• Highly accurate (± 1% tolerance or better)
• Thermally very fast (Tc ~1s)
• Very compact (SMD, thin-film and tiny beads)
• Low-cost (highly competitive)
• Interchangeable – No re-calibration required
• Point matching – Can be calibrated at a specific working temperature
• Wide temperature operating range (-60°C/+300°C).

They are also highly customisable to suit your application.

Have a question or need a sample? Call one of our engineers today on 01606 871680 or complete the contact form

NTC Thermistors (Negative Temperature Coefficient) are basically thermal resistors whose resistance drops when the temperature increases.  When the term thermistor is used, engineers often mean NTC thermistors.

An NTC thermistor has a high resistance at low temperature, and as the temperature increases the resistance decreases rapidly. Therefore NTCs offer the benefit of highly accurate and quick response times to very small changes in temperature.

These are generally used for temperature measurement as their RT (Resistance – Temperature) characteristic is very well defined and can be readily programmed.

Thermistors are manufactured from metal oxide semiconductor materials encapsulated in impermeable materials such as epoxy or glass. These coatings protect the thermistor bead and lead-wire connections mechanically whilst also providing protection against humidity.

To see our full range of NTC Thermistors on our website click here

Have a question or need a sample ? Call one of our engineers on 01606 871680 or complete the contact form .

Thermistors are very simple to incorporate electronically (and physically) as they exhibit a large change in resistance/°C when compared with other sensor types.

So they are very robust, available in numerous form factors and can be readily used from -60°C to +300°C.

Typical applications for thermistors include: 

• Temperature Measurement
• Temperature Control
• Temperature Compensation
• Inrush Current Limiting
• Over-Temperature Solid-State Switches

ATC Semitec stock a wide range of both NTC and PTC thermistors which can be viewed here website

If you have a question or need a sample, then call one of our engineers today on 01606 871680 or complete the contact form

Thermistors are thermally sensitive resistors, which show a precise and predictable resistance change in direct proportion to their change in temperature.

There are 2 main types of Thermistor:

NTC Thermistors (Negative Temperature Coefficient) whose resistance drops as the temperature increases.

PTC Thermistors (Positive Temperature Coefficient) whose resistance increases rapidly as the temperature increases.

The differences are readily explained in the below diagram;

How does a thermistor control temperature?

As the NTC thermistor responds to a change in temperature of its surroundings  its resistance either lowers or increases accordingly until it stabilises at the new temperature reached.

The resistance change of the NTC is measured by a suitable electronic circuit that is pre-programmed with the thermistor’s resistance values which it then converts into a temperature reading.

• If the circuit is part of a thermometer, the new temperature is simply displayed.
• If it is part of a control circuit, the electronics activates a heater or a cooler to bring the temperature back to the set-point on the controller.

ATC Semitec stocks a wide range of both NTC thermistors and PTC thermistors which can be readily viewed on our website

However if you have more detailed questions or need samples for your new application, then please call one of our engineers today on 01606 871680, or complete our contact form