Description:
NC266-3 is a rosin-free, resin-free, halide-free, no-clean wave solder flux designed to enhance wetting and prevent bridging during the wave soldering process. NC266-3 offers an enhanced activity level, as well as lower surface tension than other no-clean flux chemistries. NC266-3 performs well with bare copper, solder coated and organic coated PWBs, leaving negligible post-process residues that are non-conductive and do not require cleaning. NC266-3 may be utilized with tin-lead and lead-free solder alloys.
Features:
- Rosin and Resin Free
- Very Good Wetting
- Halide-Free
- Lead-Free and Tin-Lead Compatible
Application:
- NC266-3 is formulated for application via spray. For spraying, NC266-3 is ready to use directly from its container, no thinning required. When spray fluxing, it is imperative that proper flux coverage and uniformity be achieved and maintained. A dry flux coating of 500 to 1500 micrograms per square inch is recommended as a starting point.
- When nitrogen sealed wave solder equipment is used, it is generally necessary to apply slightly more flux than normal as a result of excess drying due to the extended length of the equipment.
- Monitoring and controlling the acid number is recommended for maintaining the flux composition. The acid number should be maintained between 14.2–15.2MG KOH/GRAM or 30– 32 drops using AIM’s N.020 Titration Kit.
Process Control:
Due to the low percentage of solids in this flux, control of specific gravity with automated equipment usually is found to be ineffective; therefore, control via titration is necessary. AIM’s Titration Kit has proven to be cost-effective, user friendly, quick and accurate. Titration should be carried out at least once an hour for flux foaming operations, or more often if large variances are found.
Thermal Profile:
Cleaning:
NC266-3 can be cleaned, if necessary, with saponified water or an appropriate solvent cleaner. Please refer to the AIM No-Clean-Cleaner Matrix for a list of suitable cleaning materials.
Handling:
- NC266-3 has an unopened shelf life of 1 year when stored at room temperature.
- Do not store near fire or flame. Keep away from sunlight as it may degrade product.
- NC266-3 is shipped ready-to-use, no mixing necessary.
- Do not mix used and unused chemical in the same container. Reseal any opened containers.
