"The two new, water-based fluxes EO-G-005 and EO-G-007 mark the start of our product innovations in the second half of the year," says Markus Geßner, Head of Marketing and Sales at Emil Otto GmbH. Emil Otto plans to present further innovative ideas for soldering and cleaning assemblies by productronica in November 2023.
EO-G-005 was specially developed for use in wave soldering machines and has a relatively high activity despite its low solids content of only approx. 4 %. It is applied using a spray fluxer. "We recommend that assemblies soldered with water-based fluxes that are to be subsequently painted or encapsulated are first tested for compatibility between the coating materials and the flux residues. In addition to the suitability test in accordance with DIN 61190-1-1, the flux EO-G-005 also passed our internal EO in-house standard EO-STV-2016-02-01, which is based on the Fraunhofer (ZVE) rapid test procedure for selective, dip and hand soldering fluxes," explains Geßner. This means that the flux residues of EO-G-005 are significantly less critical and non-corrosive after wave soldering compared to other conventional fluxes.
Emil Otto will also be presenting the No Clean flux EO-G-007, which is also suitable for wave and selective soldering of printed circuit boards. The flux contains organic, halogen-free, activating additives specially adapted to the soldering processes. The new development was developed in a combination with lead-containing and lead-free solders that was specially adapted to the thermal requirements of the soldering process. In addition, EO-G-007 is based on a new formulation to stabilise and improve the application process compared to conventional water-based or partially water-based fluxes. With a solids content of 7 %, Emil Otto continues to meet the high demand for water-based fluxes with a higher solids content.
With regard to the Green Line fluxes, it is important to Geßner to emphasise not only the ecological added value of the water-based products but also the economic benefits. "Thanks to their high ecological compatibility, these fluxes are not classified as hazardous goods and do not pollute the environment. Our Green Line products can therefore be transported, handled and stored in the conventional way. Simple, conventional storage in particular therefore represents considerable added value," emphasises Geßner.