Electronics Forum | Mon Aug 15 09:34:37 EDT 2016 | sarason
The screens are basically the same technology. But when I worked with them , the screens were 6 inches square for a 3 or 4 inch hybrid. It is used on a precision printing machine to get good alignmant. Tee- shirts use a bigger stencil and are not so
Electronics Forum | Thu Sep 29 18:57:14 EDT 2016 | vchauhan
Is it ok to re-print the mis-print PCB? Personally I am oppose to re-print the mis-print board. For two reasons. 1. You will end up adding solder paste on the bottom side of the stencil. 2. You may smear solder paste in some area. But I would like to
Electronics Forum | Fri Sep 30 10:37:35 EDT 2016 | ttheis
We sometimes have a misprint and we would never re-print on a board with paste on it already because it will surely get paste all over the bottom of your stencil and could smear between traces. If we do mispront we have to clean the paste off the boa
Electronics Forum | Wed Jan 25 00:46:09 EST 2017 | cmarasigan
Our Stencil Mask Fiducial vanishes from black color to light where our Screenprint machine unable to detect fiducial during batch teaching (auto set-up alignment). Does anybody here encounter the same problem? I am searching for a dark marker or any
Electronics Forum | Tue Jan 31 09:41:06 EST 2017 | emeto
If there is no specific quality reason, stay with paste. More processes you add, more points of failure. They don't need a lot of paste to get attached to the board. The ones I used were 8mil round apertures, so I did cut 1:1 on a 3 mil coated stenci
Electronics Forum | Tue Feb 28 12:41:36 EST 2017 | deanm
Is anybody using Vicor VI Chips (SMT version)? We are using a number of these on some of our boards and are having inaccurate placement and insufficient solder issues (8 mil step stencil still not enough). If you are placing these devices: 1. Which
Electronics Forum | Thu Mar 09 09:15:37 EST 2017 | ilavu
This is not a adds. I am just asking for other supplier name and experience that they have. Like Phil said he never have any problem with same company. I just wanted to let people know my pain with same company. Phil- Keep your eyes on the accounti
Electronics Forum | Wed Jun 14 10:14:20 EDT 2017 | emeto
IPA is flammable and that is why no company will tell you to use. I've used many solutions and IPA works just as fine as any other solution if not better. Definitely use solvent in your cleaning. If it was meant to clean without solvent we wouldn't t
Electronics Forum | Tue Jul 25 14:30:04 EDT 2017 | emeto
Looks like you have a great wetting of your paste :). Once body has been in contact with molten solder, the package could suffer damages on the body(outside and inside) and on the circuitry inside. It is considered a defect. I have seen that before a
Electronics Forum | Mon Aug 14 15:09:14 EDT 2017 | charliedci
In my experience, in a temperature/humidity controlled environment, 1 hour, no big deal. 4 hours still ok. Overnight your pushing the limits but will probably reflow without issues. Any longer, could be a problem. Again, a lot depend on type of past
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