PTC Thermistors (POSISTOR) FAQQ[PRG Series] Why dose "Chip type Ceramic PTC Resettable Fuse(Posistor)" be not tripped over rating trip current?

The rating hold currents are spcecified from our standard mount condition (PBC, solder paste volume, land pattern). When the heat dissipation of usage mount condition is widely different from our standard condition, rating trip current might be flowed.

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