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 | 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 Jan 27 20:18:42 EST 2016 | lordorica
Trying to find a laser marking machine. Thing is that most of my pcbs have white solder mask, so the when trying to read the 2D code is difficult due to the lack of contrast. Any idea? a different technology? regards
Electronics Forum | Thu Feb 04 20:15:57 EST 2016 | lordorica
I don't own a laser printer right now. I sent samples to some vendors and I couldn't read the codes. Have pictures of 2D codes on white solder mask? Thanks
Electronics Forum | Thu Feb 04 12:01:07 EST 2016 | g2garyg2
Hi Luis A white mask typically helps in the marking process since you are not reliant upon the PCB layers to create the contrast. Laser marking is really an etching process, so if your laser is set properly (power and focus) the goal with mask is to
Electronics Forum | Mon Feb 08 15:46:15 EST 2016 | g2garyg2
I would be happy to accept some samples and mark them for you. PROMATION USA, 9522 58th Place, Suite 100, Kenosha, WI 53144 - Let us know
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 | Wed Mar 04 10:24:50 EST 2015 | grenier
I'm looking for laser marking equipment for direct serial number Id on PCBAs. Is it recommended to laser mark on solder mask or copper or raw material?
Electronics Forum | Thu Jun 24 15:44:12 EDT 1999 | Earl Moon
| | Dear guys, | | | | I have some problem on assembling micro-BGA with solder paste (63/37). The micro-BGA we assmeble is 0.75mm pitch and with 45 pin (solder bump is 96.5/3.5Ag). The stencil is a laser-cut stencil with 5 mil thickness. We are no
Electronics Forum | Thu Jun 24 13:12:15 EDT 1999 | MD Cox
| Dear guys, | | I have some problem on assembling micro-BGA with solder paste (63/37). The micro-BGA we assmeble is 0.75mm pitch and with 45 pin (solder bump is 96.5/3.5Ag). The stencil is a laser-cut stencil with 5 mil thickness. We are now usin
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