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 Apr 12 17:19:34 EDT 2002 | davef
Some suppliers of stencil cutting machines are: * Lumonics, 130 Lombard St, Oxnard, CA 93030 805.485.5559 fax3335 http://www.lumonics.com * Directed Light 633 River Oaks Pkwy San Jose, CA 95134 800-468-2326 408-321-8500 fax 8466 http://www.directed
Electronics Forum | Thu Feb 23 13:56:21 EST 2006 | slthomas
I have dealt with it before and usually it's consistent, so you use some simple math to work around the issues. Now, if you have so much variability between different locations on your board for resist thickness, HASL thickness, etc., that it fouls
Electronics Forum | Sun Apr 14 14:13:25 EDT 2002 | davef
I assume you're looking at stencil fab equipment because you need 'faster turns' than you can get from available stencil suppliers. While you're assessing this, consider other alternatives, such as: * Dispensing paste. [A very funny SMTNetter, livin
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 | Wed Dec 17 08:47:18 EST 2014 | cloughley
What are the added capabilites going from 7w to 20w, 355nm YAG laser I wanted to know what the added capabilities we now have are going from a 7w to 20w, 355nm YAG laser. Currently we support the following materials: http://www.bestlaser.net/mater
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
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