Würth Elektronik Invests in Cutting-Edge Product Quality at Its Schopfheim Site!

For decades, Würth Elektronik has relied on post-curing its solder masks at the Schopfheim plant to enhance product quality. Now, in pursuit of continuous improvement, the company has reinvested in this process by upgrading its existing UV curing system.

For this project, Würth Elektronik placed its trust in the long-standing expertise of its partners, ahk Service & Solutions GmbH, known for its deep knowledge of coating and drying processes, and Beltron GmbH, a specialist in mechanical engineering. After a thorough consultation, the company selected a state-of-the-art UV curing system from Beltron.

The Slimsize model was chosen for its ability to deliver high efficiency while requiring minimal space, making it easy to integrate into existing production lines. Energy efficiency was another key factor—if the system is idle, it automatically switches to energy-saving mode. The machine’s transport system features a proven roller mechanism that prevents product damage, such as scratches on coated surfaces. Additionally, the use of quartz glass rollers in the processing area allows for double-sided UV curing in a single pass, ensuring that the light intensity from the lower UV source remains unaffected.

UV curing plays a critical role in stabilizing the surface structure of the solder mask, reducing condensation during the final curing process, and minimizing ionic contamination. This enhances the overall durability of the coating, improving its resistance to external influences. These benefits are particularly valuable for chemical nickel/gold finishing of contact surfaces and cleaning processes after assembly.

Thanks to the flexibility of all parties involved, installation and commissioning of the new UV curing system took place between the holidays, ensuring zero disruptions to production. As a result, Würth Elektronik customers continue to receive high-quality, sustainably produced products—delivered reliably despite global supply chain challenges and rising energy costs.