Electronics Forum | Mon May 26 04:39:49 EDT 2014 | sarason
Damn near impossible. You need to see a real change in the difference between the 2 elements you are reading. So to give yourself any hope run 2 long traces one top one bottom up the length of the board. Then compare to 2 wriggly traces at one end (o
Electronics Forum | Tue Apr 14 20:28:03 EDT 2015 | carlosdugay123
Hello Marshall, I represent Metal Etch Services, we manufacture SMT Single and Multi-Level Stencils, we have over 25 years experience and one of the reasons most of our customers like us is because we offer technical assistance. Regarding the issue y
Electronics Forum | Thu Feb 26 05:57:44 EST 2015 | sarason
To get real conductivity in your traces you will need to remelt your copper or silver tracks. This means 850oC. The other method is plating at low temps, or etching. Epoxies like all carbon based compounds vaporize at 400oC. Next problem epoxy fibre
Electronics Forum | Fri Mar 20 10:26:05 EDT 2015 | g2garyg2
For laser marking the mark quality is directly related to the PCB composition. If you want to guarantee a good mark every time and have control over the PCB being built (not always the case for contract Mfg) as the other responder stated, placing a w
Electronics Forum | Thu Aug 02 21:22:15 EDT 2018 | davef
I need your input. What are your thoughts? Currently SMTnet is looking to improve process. It uses four different lists of categories that all are maintained and updated separately. A single LIST makes sense. Approaches to arranging the LIST being
Electronics Forum | Fri Sep 28 02:48:46 EDT 2018 | teresat2
Principle A layer of photosensitive material (photosensitive oil or dry film) is applied to the copper foil on the board surface, and PCB manufacturer should be use the position is exposed by black film, This applies to most PCB factories, especially
Electronics Forum | Tue Apr 23 10:31:59 EDT 2019 | laserpro
Hi all and thanks for viewing my post! My questions related to the subject line are as follows: 1. Does the Epoxy Solder Mask Layer of a PCB protect against moisture absorption? Is this a primary function of the solder mask? 2. Does exposed FR4 na
Electronics Forum | Tue Jul 13 16:43:06 EDT 2021 | jseewald
Is the variation between markings human-detectable, or does the issue only crop up when you use a scanner? Different scanners can definitely have different results. Try a few models, and make sure you aren't using any damaged scanners. When you se
Electronics Forum | Sat Apr 15 00:10:52 EDT 2023 | sarason
Having worked in a hybrid maanufacturing operation many years ago, yes stencils are great and have the required accuracy, but on the down side there were 2 operators that were absolute wizzes at turning them out and that could mean up to 20 stencil
Electronics Forum | Mon Jun 25 20:37:14 EDT 2001 | davef
You are 100% correctamundo that the pad on PCB should be the same as the pad on the BGA interposer, but let�s not expend that thinking to the aperture of your solder paste stencil, right away. Generally, paste on large pitch BGA is often 1:1, but as
