Oct. 27, 2020
NTC thermistor is similar to varistor. It is a very important circuit protection electronic component in the circuit. There are some details that need to be paid attention to when using it, otherwise it is easy to cause damage to the NTC thermistor.
1. Pay attention to the working temperature of NTC thermistor.
Never use the NTC thermistor outside the operating temperature range. The operating temperature of φ5, φ7, φ9, and φ11 series is -40~+150℃; the operating temperature of φ13, φ15, and φ20 series is -40~+200℃.
2. Please pay attention to use NTC thermistor under rated power condition.
The maximum rated power of each specification is: φ5-0.7W, φ7-1.2W, φ9-1.9W, φ11-2.3W, φ13-3W, φ15-3.5W, φ20-4W.
3. Precautions for use in high temperature and high humidity environments.
If the thermistor needs to be used in a high temperature and high humidity environment, a sheathed thermistor should be used, and the protective cover should be used to close the part exposed to the environment (water, moisture), and the opening of the sheath will not directly touch Water and steam.
4. Cannot be used in hazardous gas and liquid environment.
Do not use it in a corrosive gas environment or in an environment where it will come into contact with electrolyte liquid, salt water, acid, alkali, or organic solvent.
5. Protect the wires.
Do not excessively stretch or bend the wire, and do not apply excessive vibration, shock, and pressure.
6. Keep away from heating electronic components.
Avoid installing electronic components that are easy to heat around the power NTC thermistor. It is recommended to use products with higher leads on the upper part of the bent leg, and use NTC thermistors higher than other components on the circuit board to prevent heat from affecting the normal operation of other components.
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