As electronic assemblies grow more complex and operating environments more demanding, the materials used to protect printed circuit boards (PCBs) must evolve accordingly. UV-curable thixotropic gels represent one of the most significant advances in PCB protection technology in recent years — and HumiSeal® UV20Gel is leading that charge.
Unlike traditional conformal coatings, which form a thin, rigid film over a PCB surface, gels are an entirely separate product category. They are soft, compliant, and conformable materials that encapsulate components in a protective layer without imposing mechanical stress on delicate solder joints or surface-mounted devices. This distinction is important: gels and conformal coatings are separate HumiSeal product lines, each engineered for different protection requirements.
HumiSeal® UV20Gel is a one-component, UV-curable thixotropic gel designed for selective application directly onto PCB assemblies. Its thixotropic nature means it holds its shape after dispensing — remaining in place on vertical surfaces and around complex component topographies — yet flows smoothly during application to ensure complete encapsulation.
UV curability is another defining characteristic. When exposed to UV light, the material cross-links rapidly, enabling cure cycles measured in seconds rather than the hours required by heat-cure or moisture-cure alternatives. The result is a streamlined manufacturing process with significantly higher throughput potential.
From a protection standpoint, UV20Gel delivers a soft, flexible encapsulant that absorbs mechanical energy rather than transmitting it to underlying components. It provides a robust barrier against moisture, contaminants, and corrosive agents — critical requirements in industries ranging from automotive and industrial automation to telecommunications and defense.
For Nordic electronics manufacturers operating in environments where temperature extremes, humidity, and mechanical stress are everyday realities, UV20Gel offers a compelling, process-friendly solution.
HumiSeal® UV20Gel is available through Amitronic, the authorized Nordic distributor, which provides local support for material qualification and process development.