| | | PREHEAT & SOLDERING The rate of preheat in production should not exceed 4°C/ second and a recommended maximum is about 2°C/second. Temperature differential from preheat to soldering should not exceed 100°C. For further specific application or process advice, please consult AVX. | | CLEANING RECOMMENDATIONS Care should be taken to ensure that the devices are thoroughly cleaned of flux residues, especially the space beneath the device. Such residues may otherwise become conductive and effectively offer a lossy bypass to the device. Various recommended cleaning conditions (which must be optimized for the flux system being used) are as follows: Cleaning liquids....... i-propanol, ethanol, acetylacetone, water and other standard PCB cleaning liquids. Ultrasonic conditions . . power-20w/liter max. frequency-20kHz to 45kHz. Temperature.........80°C maximum (if not otherwise limited by chosen solvent system). Time...............5 minutes max. | | |