Nigel,

We use laser etch, but our only application is for rigid PCBs.  So far we've experienced no problems.

Leland

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Nigel Burtt
Sent: Friday, May 10, 2013 6:46 AM
To: [log in to unmask]
Subject: [TN] PCB laser marking

Use of laser marking for serial numbers, 1D, 2D barcodes, logos etc on standard rigid "FR4" PCBs seems well established where the laser etches away soldermask material.

How many users are doing the same thing successfully with flexi/flexi-rigid PCBs where the marking is made into the coverlay surface?

Thanks

Nigel Burtt

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