NTC Thermistor FAQ

An NTC Thermistor is resistors with a negative temperature coefficient. With these types of thermistors, the resistance decreases with increasing temperature. Below are some commonly asked questions regarding NTC Thermistors.

Question: What is the thermal time constant?

Answer: The thermal time constant for an NTC thermistor will depend on the series. The thermal time constant is determined by the size, material, and other conditions of the board. Refer to the manual for more information regarding the product’s thermal time constant.

Question: When choosing an adhesive agent to fix the NTC Thermistor to the object to be measured, what precautions should be followed?

Answer: Added stress is placed on the thermistor when heat expands and contracts resin. It is important to be conscious of the type of resin you will be using. Elastic resin, with high heat conductivity, works best. If you are unsure whether the resin you have chosen will work, you can contact the manufacturer for more information.

Question: When soldering to the leads of an NTC Thermistor, what precautions should be made?

Answer: With the NTC thermistor, the element and leads are soldered together. The leads should be soldered at a point 5mm or more away from the lead's root so that the joints between the element and lead are not affected. Make sure the soldering iron does not come into contact with the body of the thermistor.

Question: How can I accurately measure the resistance value of NTC thermistors?

Answer: It is important to keep in mind that ambient temperature affects the strength of the product. So when you measure the resistance value of NTC thermistors, the ambient temperature should be controlled.

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