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 | Wed Mar 07 20:37:38 EST 2001 | davef
I agree. The bar coded label you use should not be affected by the solder mask of the board. The label should have sharp contrast between the segments of the code to modulate the returned light and allow the reader to discriminate between light and
Electronics Forum | Thu Mar 22 17:03:59 EST 2001 | williamh
I have been using an MPAV and MVIIF for about 3 1/2 years and have had some difficulties, mainly with the MPAV. After only 2 1/2 years of use we had to replace the laser because we were having alot of QFP's being mismounted. That was an $8,000 expe
Electronics Forum | Mon May 03 15:16:01 EDT 2021 | capse
Thin FR4 can be routed with a CO2 laser with high quality results, the edge is precise and free of slag. The process is extremely low stress. If the edges are straight you can consider sawing. 0.4mm (0.016") FR4 can be laser routed and sawn at spee
Electronics Forum | Fri Oct 23 00:15:50 EDT 2009 | tony_d
Hello Nagesh, Do yourself a favor, check out MIRTEC's MV-7 system. I purchased one of these machines with the Intelli-Scan laser option. This is a secondary laser inspection system that allows you to test for coplanarity of leaded and non-leaded de
Electronics Forum | Thu Jan 23 12:39:25 EST 2020 | rlackey
Hi Phil, Tabs every time for me, but running in volume so the slow down in tool travel for cutting important. Have used Cencorp 1000 & 1300BR, and Asys ADS01 - both in line systems with grippers from the top to hold the board and the router underne
