Here you will find all the frequently asked questions and answers that we have put together for you.
Modern cell technologies in particular, such as TOPCon and heterojunction, can be sensitive to unnecessary heat input. Suitable fluxes can support gentler yet stable process control through optimized drying characteristics and lower preheating temperatures.
The selection depends, among other things, on cell technology, soldering methods, process temperature, the desired drying rate, and residue requirements. Especially in automated production lines, the flux should be specifically tailored to the respective process parameters.
No-clean flux leaves only minimal or non-critical residues after the soldering process, thereby eliminating the need for additional cleaning steps. This simplifies industrial manufacturing processes and can contribute to a high level of process reliability in the production of solar modules.
Solar fluxes should ensure reliable wetting, remain stable at the process temperatures used, and leave as little residue as possible. For industrial manufacturing processes, reproducible results and good compatibility with cell technology and the soldering process are also crucial.
Solar fluxes contribute to process reliability by promoting uniform wetting, controlled residue levels, and reproducible soldering results. This is important for manufacturers of photovoltaic modules in order to achieve stable electrical contacts and reliable manufacturing processes.
Learn more: Solar Flux for Reliable Photovoltaic Manufacturing
High processing temperatures can occur during solar module manufacturing. Therefore, the activators and formulation of the solar flux must be compatible with the specific temperature profile. Only then can the flux reliably support wetting and enable stable solder joints.
Learn more: Solar flux for high processing temperatures
Key criteria include wetting, solids content, activators, temperature stability, residue behavior, suitability for no-clean applications, material compatibility, and process reliability. The selection should always be tailored to the specific soldering process, equipment, temperature profile, and quality requirements.
Learn more: Selection Criteria for Solar Fluxes in Photovoltaic Manufacturing
No-clean solar fluxes are designed so that, in many applications, no additional cleaning step is required after soldering. This can simplify the process, reduce the cleaning effort, and help maintain consistent manufacturing conditions.
Learn more: No-Clean solar flux for clean soldering processes
Residue behavior is important because residues should not interfere with the rest of the manufacturing process or compromise the reliability of the electrical connection. In industrial solar module manufacturing in particular, controlled residues are a key factor in ensuring clean and stable processes.
Learn more: Solar flux with controlled residue behavior
Proper wetting ensures that the solder evenly reaches the metallic contact surfaces, allowing a stable connection to form. This is particularly important in photovoltaic manufacturing because the electrical contacts between solar cells and cell connectors must be established reliably and reproducibly.
Learn more: Solar Flux for Stable Electrical Connections
