Circuit boards are bar coded to allow tracking throughout the process from raw board creation to final assembly. When using a laser to produce a bar code, marks are typically made on a lasermarkable label or ink patch to prevent damage to the FR4 substrate because direct marking frequently results in pinholes through to the underlying copper layer.
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Laser lines
Promoted content: Does social media work for engineers – and how can you make it work for you?
So in addition to doing their own job, engineers are expected to do the marketing department´s work for them as well? Sorry, wait a minute, I know the...