Different Types of NTC Thermistors

By mixing various metal oxides (usually two or more) with a suitable binder you are able to create an NTC thermistor. Common oxides used in creating NTC thermistors are cobalt, titanium, copper, and even manganese. By combining different oxides, thermistors can have different sintering temperatures and a wide resistivity. There are many types of NTC Thermistors. Below we will be going over some of the major differences between thermistors.

First, when referring to commercial thermistors, there are two main classification groups. The difference is between which electrodes attach to ceramic bodies. Within those two groups, there are more categorizations. For instance, there are bead type thermistors. You can get bare beads, glass coated beads, or ruggedized beads, which are all subdivisions of bead type thermistors.

Miniature glass bead thermistors are used mostly in scientific high temperature applications. Less expensive chip thermistors are suitable for commercial use. Surface Mount Thermistors (SMD) have metal contacts, they are used in automotive industry and other industrial applications.

It is important to know that NTC thermistors are made available to fulfill different applications. This means that these thermistors come in many different configurations, subassemblies and assemblies.

Choosing the correct thermistor for you and your company can seem like a daunting experience, but it does not have to be. There are ways to prepare yourself, so that you can get the most out of your thermistor without wasting time or money. If you know the device size, as well as thermal response and other physical characteristics, you can begin to eliminate bad options. Sensor Scientific will provide resistance-temperature curves for all their products. For those who have difficulties calculating beta tolerance and resistance tolerance, there are mathematical equations that can be used to help you better understand what you need. Do not hesitate to contact Sensor Scientific for more technical information.

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