SMT termal profilleme

Geri dönük profil oluşturma 4- faz optimizasyonu gerektirir: ön ısıtma ({1-3 derece /s), batırma ({150-180 derecesinde 60-120 s), geri dönme (30-60 s 217 derecenin üstünde), soğutma (30-60 s)<6°C/s). KIC thermal profilers use predictive algorithms for complex boards. Thermocouples attach to thermal mass areas for accuracy. Nitrogen environments permit 10°C lower peak temperatures. Ramp-to-spike profiles reduce tombstoning. DOE methods correlate profile settings with shear strength. Standards: IPC-7531 guidelines for profile validation.