Fluxes for manual and rework soldering tend to contain “different activators to those used for series production”, according to the company. “Thanks to the uniform activators of the Emil Otto flux gels, cross-reactions that can occur when using different activators from different products can now be avoided.”
The new flux gels: EO-S-002, 007 and 009, are designed for soldering solar modules, tabber and stringer material and connecting cells, particularly for soldering on tin-copper metallisation.
“In the production of solar modules, this metallisation is becoming more and more important and will replace the previous tin-silver metallisation,” said Emil Otto head of marketing Markus Geßner.
Picking EO-S-002 as an example, it is a halogen-free no-clean flux formulated to leave no coloring or sticky residues. Its activators are designed for the higher temperatures required in solar modules production.
The gels are supplied in dosing syringes with a metal dosing needle, and can be processed using hot air, soldering irons, reflow or immersion tinning.
The matching production fluxes on which the re-work fluxes are based on are: EO-B-002, 007 and 009, all non-corrosive, and “characterised by high activity, good wetting and spreadability”, claimed the company.
Emil Otto will be present the new fluxes in booth 317 hall A2 at Intersolar Europe in Munich from 7 to 9 May.
