PTC Thermistors (POSISTOR) FAQQ[PRG Series] Why dose "Chip type Ceramic PTC Resettable Fuse(Posistor)" be tripped under rating hold 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 hold current might be flowed.

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