Key Considerations for PTC Thermistors Used in Overcurrent Protection 3

When coating and pouring PTC thermistors, mechanical stress caused by different thermal expansions during curing and subsequent processing is not allowed. Please use infusion materials or fillers with caution. It is not allowed to exceed the upper limit temperature of PTC thermistor during curing. In addition, it should be noted that the infusion material must be chemically neutral. The reduction of titanate ceramics in PTC thermistors may lead to a decrease in resistance and loss of electrical performance; Changes in heat dissipation conditions caused by infusion may lead to local overheating on PTC thermistors, resulting in their damage.diode

5. Storage conditions and expiration date

If stored properly, there is no limit to the storage period of PTC thermistors. To maintain the solderability of PTC thermistors.

Storage should be carried out in a non corrosive atmosphere, while paying attention to air humidity, temperature, and container materials. Components should be stored in their original packaging as much as possible. Touching the metal coating of an unwelded PTC thermistor may result in a decrease in weldability. Exposure to excessive moisture or high temperatures may alter the performance of some specifications of products, such as the solderability of tin lead, but they can be stored for a long time under normal electrical component storage conditions. diode