277 – VOC Free
277 – VOC Free
NC277 Liquid Flux is a water-based VOC-Free flux that has performance and reliability characteristics equal or superior to many alcohol-based fluxes. A medium-solids/residue flux, NC277 liquid flux has an exceptionally durable and powerful activator system. It is ideally suited for high thermal mass assemblies such as backplanes, power management, servers and palletized assemblies. The activator system also withstands the high solder temperatures required for selective soldering. NC277 liquid flux can be used with all common lead-free wave soldering alloys including tin-silver-copper, tin-silver, tin-copper and others. Optimized for flux spray applications, NC277 liquid flux has proven to reduce equipment maintenance. Designed as a no-clean, any remaining NC277 liquid flux residue can be cleaned if critical to the product application.
* Halide/Halogen Free
* ORL0 per J-STD-004B
* Broad Process Window
* REACH Compliant
* Medium Post Process Residues
* Excellent in Extended Dwell Time
* Compatible with all Lead-Free Alloys
NC277 liquid flux is formulated for application via spray, brush, mist, or dip. Foam fluxing is not recommended. NC277 liquid flux is ready to use directly form the container it is supplied in. Proper flux coverage and uniformity will ensure consistent performance. An initial dry flux coating of 500-1500 micrograms per square inch is recommended. Process/qualtiy requirements may require flux application quantities outside of these guidelines. e.g. full tunnel nitrogen application or palletized assemblies.
Using thermocouples attached to the top of the PCB, the topside assembly temperature should be between 100-135°C (212-275°F) immediately prior to contacting the solder wave. As with all water based fluxes, conventional type pre-heaters provide a wider process window. It is important that the flux be dry prior to entering the wave regardless of temperature or spattering will occur. Some smoking is considered normal if it is not excessive. Recommended contact time with the wave is dependent on wave configuration, pot temperature, alloy type and thermal mass of the assembly with 4-7 seconds being the typical.
NC277 can be leaned using a saponifier or chemical cleaners. Deionized water is recommended for the final rinse.
Hadling & Storage
NC277 is shipped ready to use, no mixing necessary. Do not mix used and unused chemical in the same container. Keep away from sunlight as it may degrade the product. Reseal any opened containers. Protect from freezing.
Use with adequate ventilation and proper personal protective equipment. Refer to the accompanying Safety Data Sheet for any specific emergency information. Do not dispose of any hazardous chemical in non-approved containers.