Electronics Forum | Mon Sep 16 12:56:56 EDT 2002 | dragonslayr
simon- davef is on the right track. 1st year electronics courses teaches us that you should always check the power supply first. In this case, the power supply in question is not your power source but the regulated power within the unit. I suspect o
Electronics Forum | Fri Jul 07 11:06:44 EDT 2000 | John O'Brien
You ought to consider Data Matrix directly marked on the boards It can be done with laser, inkjet, or other permanent marking methods. Never falls off, can be read even if 30% is obliterated. For an example, check any AMD (K6, K7) or Intel Pentium c
Electronics Forum | Mon Jul 03 14:47:35 EDT 2000 | Ashok Dhawan
In a typical flowline assembly of circuit boards, what are the different methods used for tracking WIP ? I can think of : 1. travel cards - not suitable for panelised boards 2. Marking ID# on board at various operations while board is being built.
Electronics Forum | Mon Jul 03 17:12:49 EDT 2000 | Ramon I Garcia C
Hi!!! I think, you should visit www.enthone.com this it's the internet place of an inks company named Polyclad Technologies. I hope this information can help you...
Electronics Forum | Wed Jul 05 17:12:28 EDT 2000 | Michael Parker
Ashok- Rather than ink, consider using a paint marker. This is much more permanent (not easily removed with alcohol), is easily applied, comes in a "pen" like magic markers. Many pen tips available and a large choice of colors too. The down side is
Electronics Forum | Sun Apr 28 07:34:34 EDT 2002 | hany_khoga
Dear Tom : I hope I �m not too late. We produce PC motherboards with some buses exceeding the speed of 100MHz . we use no clean flux and it is OK even with the residues you can see under a microscope. But according to our own experience through a mo
Electronics Forum | Wed Aug 25 00:10:13 EDT 2021 | sarason
The company that does this is McDermid. There are multiple different ways of doing it. Screen print silver paste onto the mylar, "activate" the film to be conductive, then plate in copper. These processes are found in the patent literature which is e
Electronics Forum | Mon Dec 20 19:09:54 EST 1999 | Chris
If your flex circuit is only populated on one side, you can have the PCB vendor palletize the flex for you. What you do is have the flex circuit laminated to 062" FR4 using a thermoset adhesive like Dupont WA. Standard flex circuit adhesive. Howev
Electronics Forum | Wed Oct 10 13:59:49 EDT 2007 | petep
I have always understood that on boards (or circuits) operating over 900 MHz, No Clean fluxes are to be avoided. Apparently the residues left behind, while non-conductive and non-corrosive, will change impedence of the circuit. It may be a possibil
Electronics Forum | Thu Oct 11 14:44:46 EDT 2007 | bbarton
Lots of papers out there on HiFreq circuits and the effects of solder paste residue. Google Dr. Karen Tellefsen. Simple test...take a "failed" board, remove the residues, test again. Has the problem gone away?
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