3M Company

3M's Electronics and Energy segment serves customers in electronics and energy markets, including solutions for dependable, cost-effective, high-performance electronic devices.


3M Company Postings

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3M™ Ultra-pure Viscoelastic Damping Polymers

3M™ Ultra-pure Viscoelastic Damping Polymers and 3M™ Viscoelastic Damping Polymers are used on electronic components for acoustic and vibration damping and noise control and reduction. Enhances mechanical vibration re...


3M™ Ultra-pure Viscoelastic Damping Polymers

1 technical article »

Ultrathin Fluoropolymer Coatings to Mitigate Damage of Printed Circuit Boards Due to Environmental Exposure

May 19, 2016 | Erik Olson, Molly Smith, Greg Marszalek, Karl Manske

As consumers become more reliant on their handheld electronic devices and take them into new environments, devices are increasingly exposed to situations that can cause failure. In response, the electronics industry is making these devices more resistant to environmental exposures. Printed circuit board assemblies, handheld devices and wearables can benefit from a protective conformal coating to minimize device failures by providing a barrier to environmental exposure and contamination.

Traditional conformal coatings can be applied very thick and often require thermal or UV curing steps that add extra cost and processing time compared to alternative technologies. These coatings, due to their thickness, commonly require time and effort to mask connectors in order to permit electrical conductivity. Ultra-thin fluorochemical coatings, however, can provide excellent protection, are thin enough to not necessarily require component masking and do not necessarily require curing.

In this work, ultra-thin fluoropolymer coatings were tested by internal and industry approved test methods, such as IEC (ingress protection), IPC (conformal coating qualification), and ASTM (flowers-of-sulfur exposure), to determine whether this level of protection and process ease was possible....

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