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 | 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 | 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 06 18:57:48 EST 2001 | pzohbon
I am looking at putting a laser or ink jet marking system for barcoding of pcb's in our smt production area. As and inline system it will need the capability to handle different size boards. We use dark green pcb's except for couple red and blues m
Electronics Forum | Wed Mar 07 02:29:22 EST 2001 | Cosine Theta
Barcode needs a light colour backgroup so that the scanner can read. No way you can mark on the solder mask and become readable. I found most of the time the investment cannot be paid back within 5 years. Most of the time it is product requirement th
Electronics Forum | Thu Mar 08 09:38:35 EST 2001 | blnorman
We've been using pre-printed labels on our PCB's for years, with 8 - 10 hours a week down time associated with them. Last October we put a CO2 laser marker on one of our lines. In 6 months we've had a total of 30 minutes down time. We use a 2D b
Electronics Forum | Fri Oct 07 12:50:51 EDT 2016 | padawanlinuxero
Hello guys I am back! Guys I have a problem with the laser marker here, we use the laser to mark a 2D barcode on the pcbs for traceability, but for some reason since yesterday every time it tries to connect to the database to get the serial codes an
Electronics Forum | Tue Feb 23 21:33:22 EST 2021 | stephendo
We haven't laser engraved PCBs but we have had 2D barcodes silk screened on. When I saw them I thought that they would not work because the white squares were blobs but they did work. With the Datamatrix format only the centre of each little square
Electronics Forum | Thu Oct 23 09:48:15 EDT 2014 | rgduval
We tried various products years ago to no avail. As you noted, labels either survived reflow or wash, but, rarely, both. We had one that was made out of kapton, and no more than .125" wide that survived more than the others...but, I don't recall an
