Electronics Forum | Tue Jan 16 16:15:03 EST 2024 | madisreivik
Have you considered laser marking ? Cheap chinese lasers can vaporize soldermask and leave "dark copper" marking.
Electronics Forum | Wed Jan 17 22:28:35 EST 2024 | dwl
In the spirit of engineers not answering the question but providing an alternative solution, have you considered using adhesive labels? for very low volumes you can hand place them. for higher volumes, you can get them on reels and place them with th
Electronics Forum | Fri Jan 19 20:31:39 EST 2024 | dwl
If it works with a mylar stencil, I don't see why it wouldn't work with a stainless steel stencil. I agree that rubber squeegees would work better then metal.
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 Jan 17 08:41:07 EST 2024 | spoiltforchoice
The neat and simple solution is indeed a laser. However I have seen other quirky ways to denote a build revision. These include a resistor with a value marking that matches the build revision e.g a 1K marked 102 could indicate assembly 1.02. Another
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 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 | Thu Sep 23 23:30:14 EDT 2004 | Chics
Can ceramic inks be used as conductive ink as a substitue of silver inks
Electronics Forum | Wed Jan 23 23:45:35 EST 2019 | kiransahu
Piezoelectric type (office/industrial) In this method, a piezoelectric (piezo) element, whose volume is deformed when voltage is applied, is used to discharge ink particles. This element is attached to the component that is filled with ink. Then, th
Electronics Forum | Fri Jun 16 08:20:59 EDT 2006 | jem
Thanks for your help. Looked for an MSDS on the ink but could not find one. All this ink was ordered long before my time. I will try to contact ink vendor again. J.E.M.
