Electronics Forum | Mon Nov 26 15:15:05 EST 2007 | realchunks
I agree with James. Granted there are a variety of lasers to try, we too could not get a consistent power setting. Plus when paste turns liquid, you get some reflection. Also the mask around the pad has to be pulled back or burning may occur.
Electronics Forum | Mon Jul 12 14:00:37 EDT 2004 | blnorman
We've been using lasers to mark barcodes on our boards for some time now. We use a CO2 laser to burn through the solder mask on most of our boards. The machine is enclosed so the operators aren't exposed to the laser. The laser is also mounted on
Electronics Forum | Mon Jul 12 11:11:25 EDT 2004 | Stefan
For laser marking you don�t require as powerful lasers then for cutting. A 20 Watt laser diode does already a good job. Because of the safety requirements the laser operates in an enclosure, which means more $$$ if you want to use the laser in line
Electronics Forum | Thu Mar 29 09:47:12 EDT 2012 | blnorman
In a previous life we burned bar-codes on PCB with a CO2 laser. Initially we placed a small white epoxy pad to burn the code into. After some experimentation we found that we could eliminate the epoxy and just burn through the soldermask and the un
Electronics Forum | Tue Mar 27 04:39:27 EDT 2012 | andrzej
Have you got some experience with using laser (CO2 or fiber one) to label with barcode your PCBs ? So far I thought it is easy process but now we do tests with many PCBs covered with diffrent soldermasks and fiber laser as well as CO2 has same probl
Electronics Forum | Fri Nov 18 15:45:27 EST 2016 | jg_annaanthan
Hi all, my site using x-ray machine "Agilent 5DX Series 5". The tester will hang around 10- 15 min during perform automatic startup at level "Delta Z". My site, we already change Front & Rear laser, burn galil, performed manual startup, total shutdow
Electronics Forum | Wed Dec 01 17:05:51 EST 2004 | grayman
We looking for a new technology Laser PCB cutting. We have tried some laser equipment and the result was burn PCB. Can anyone suggest the best laser manufacturer for this application and if you have tried this process? Your help is highly appreciate
Electronics Forum | Thu Sep 06 10:04:54 EDT 2001 | blnorman
We have started switching all our PCB marking from labels to Laser marking. We have a silkscreen patch put on the boards then use a CO2 laser to burn the mark off to produce the barcode. Our marking downtime has gone from an average of 8 hours a we
Electronics Forum | Thu Jun 12 03:37:05 EDT 2008 | benefon
It is also possible to etch the barcodes directly on the PCB by using a laser. The solder resist mask is easily burned by laser and if there is copper underneath the contrast is quite good. The contrast is satisfactory even if there is no metal under
Electronics Forum | Mon Oct 19 17:40:01 EDT 1998 | Eric
Nate, If your stencil vendor has laser-cutting capabilities, they should be able to burn in your fiducial locations. This process involves re-setting the focus of the laser beam to burn the locations 1-3 mils into the surface (as opposed to 1/2 cut
