Electronics Forum | Tue Aug 31 15:47:24 EDT 2004 | davef
Choices are: * Via Pad / Drill = 0.020 / 0.010 (Inches) * What ever the IPC land calculator says
Electronics Forum | Mon Sep 13 18:34:31 EDT 2004 | russ
Use Water soluble if you can, if not I would try the Indium SMQ NC paste, this residue stays soft. I would also change ICT probes to the "drill type". Russ
Electronics Forum | Tue May 10 16:53:21 EDT 2005 | jdengler
For dots this size I have applied a thin coat of Chemtronics CM8, let set 10 mins then waved. The preheaters finished the cure before the board reached the wave. You just have to drill into the heads of who applies the mask that thinner is better!
Electronics Forum | Tue Jun 28 21:54:44 EDT 2005 | davef
Fabricators take different approaches in developing paste that is more or less prone to solder balling. That being said, you should be able to overprint 250 thou, no problem. Prove this to be correct by printing paste on a scrap board with an obsol
Electronics Forum | Wed Aug 03 09:58:16 EDT 2005 | Rob
http://www.micromat.co.uk/economy.htm We've got one of these & it's been great - whether for depanelising, making wave solder pallets, SMT flexi carriers, drilling prototype pcbs etc. Really easy to programme too.
Electronics Forum | Wed Aug 31 11:45:31 EDT 2005 | aj
All, I would like to learn more about the panelisation of boards. Are there any "rules of thumb" when approaching a PCB that requires panelisation. What are the most reliable connections from breakout piece to boards i.e V-score , drilled tabs etc
Electronics Forum | Wed Aug 31 11:46:51 EDT 2005 | aj
All, I would like to learn more about the panelisation of boards. Are there any "rules of thumb" when approaching a PCB that requires panelisation. What are the most reliable connections from breakout piece to boards i.e V-score , drilled tabs etc
Electronics Forum | Wed Sep 07 09:34:15 EDT 2005 | PWH
Does anyone know of an IPC standard that deals with drilled holes in a PCB in relation to pad location? We have a PCB where the holes are very close to (through the edge of in some cases) a SMT component pad on a PCB.
Electronics Forum | Wed Feb 15 06:29:05 EST 2006 | Chunks
Send it out to someone who can make sure. Gerber readers are hard to make changes with, which is their design. Send it out. Most places will charge @ $100 US.
Electronics Forum | Tue Mar 28 17:45:49 EST 2006 | mikecollier
We profiled the BGA, drilled into center and outer balls. Original profile done this way was not hot enough when we actually tried the run, which is why the area engineer began to review and modify the recipe. And I am very sure the balls are 63/37
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