Why Should You Inspect PCB’s With UV Light?

by Andy on August 31, 2012


Wave Plus UV Magnifier

Here at All-Spec Industries, we carry a few UV magnifiers, microscopes, and video inspection systems, but you may wonder why you would need them for PCB inspection. While normal magnifiers and microscopes can help find issues with soldering or physical damage, UV lights are often used to check PCB’s conformal coating.

A conformal coating protects PCB’s from moisture, dust, and other environmental damage by providing a chemical barrier on the board. Many conformal coatings contain a UV trace, which will glow when viewed under a UV light. Because of this, UV magnifiers and microscopes can be used to find gaps in the conformal coating, and experienced inspectors can even validate the thickness of the coating based on the intensity of the glow.

Do you have any questions on how our products work or what you should use them for? Leave a comment below and we will get you an answer!

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