Feature: Electronics labelling


In these instances, manufacturers look toward ensuring that every component of an assembly is extremely resistant to outgassing. Tis applies to substrates, components and even labelling. Outgassing is a major concern in


electronics labelling, especially in risk intolerant, highly regulated environments where compromised labels can cause safety concerns and product recalls. Additionally, electrochemical migration from adhesive-sourced moisture emissions can create unintended paths between traces, causing PCB damage.


NASA’s testing for outgassing- resistant labelling In recognition of the extremely important role that substrates, adhesives and labels have in protecting the integrity of outgassing-sensitive assemblies, NASA developed an outgassing screening methodology that was later standardised as ASTM E595. It serves as a standardised


There is a silent disruptor


potentially lurking under each component and PCB


method for evaluating materials under stress conditions, measuring total mass loss from vaporisation and collected volatile condensable materials as residue. To pass, a label must achieve


TML below 1.0% and CVCM below 0.10%. Tis testing can be essential for manufacturers operating highly automated production lines, adhering to stringent ISO quality standards, or using ID labels near optics, high-reliability


connectors, or within sealed low-pressure PCB enclosures, both for peace of mind and oſten to meet client audit goals. Too oſten, labelling is treated by


manufacturing teams as a routine compliance formality rather than the essential measure it represents for product safety and traceability. Considering material compatibility and outgassing behaviour across entire assemblies, including labelling, is essential for preventing damage to components and adhesion in challenging environments. By choosing materials that are ASTM E595 certified, manufacturers can ensure they are sourcing extremely durable compositions, where physical and chemical properties will not compromise delicate assemblies. ASTM E595 approval shows customers


that they can trust their assemblies to operate even in the most challenging conditions.


www.electronicsworld.co.uk June 2026 41


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