Kester NF372-TB is a zero-halogen, no-clean, low solids liquid flux designed to withstand long dwell times and high preheat temperatures needed in thick board assemblies. 952-S has a wider operating window varying with temperature range, and can be used in SnPb, SnAgPb and Pb-free alloys. Cell are dry and cosmetically clean as they exit the tabber and stringer machine. The extremely low solids content (around 2%) and nature of the activator system results in practically no residue left on the cell after soldering. 952-S could be applied directly to interconnecting ribbon by hand soldering or auto-equipment with tabber and stringer soldering system, by dipping or spraying. Kester 952-S is a zero-halogen, non-rosin organic flux designed specifically for use in tabber and stringer equipment of Photovoltaic Assembly (PV) module industry by soldering tabs to cell contacts. The miniscule amount of non-visible residue that remains after soldering is non-conductive, non-corrosive, and does not need to be removed. 979VT leaves no haze or visible residue behind, including the white powdery residue associated with use of earlier no-clean formulas. It has been specially formulated to accommodate needs of single sided board assemblers. 979VT will not attack properly cured solder masks or FR-4 Epoxy-Glass laminate. 979VT also reduces micro-solderballing on glossy and matte laminates and between connector pins. This flux’s finely tuned activation system offers the best wetting available in VOC-free liquid flux technology and the shiniest solder joints. Kester 979VT is a VOC-free, no-clean flux formulation for high quality, low-defect soldering of lead-free electronic circuit board assemblies. As tested under J-STD-004A specifications 985M is classified Type ROL0. This flux is suitable for automotive, computer, telecommunications and other applications where reliability considerations are critical. 985M exhibits improved soldering performance to minimize solder bridges (shorts) during all soldering operations. 985M was developed for use with both traditional tin-lead and lead-free solder alloys. Kester 985M is a low solids, halide-free, no-clean flux that is designed for wave solder, selective solder and touch up processes.
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