Electronics Forum | Wed Nov 01 12:19:42 EST 2000 | Fraser
Steve, someone somewhere is feeding you a line!! if you increase the draft angle from || to / \ on your laser cut stencil you increase the surface area of the side wall and hence increase the likelyhood of the paste sticking in the aperture. Whats m
Electronics Forum | Thu Jun 16 18:11:33 EDT 2005 | Jason Fullerton
The IPC standards have NO bearing on the state of the RoHS Directive - Europe isn't going to change the rules because the IPC has a few draft standards floating around that create a category "RoHS Compliant, except I still have lead in my solder". Th
Electronics Forum | Fri Jan 12 07:00:27 EST 2007 | GDO
Hi guys, Pin in Paste guidelines will be included in the IPC-7525A "Stencil Design Guidelines". This draft is being reviewed now and is scheduled to be released by February, (March at the latest). There are many other sources for these guidelines
Electronics Forum | Mon Jul 24 09:15:32 EDT 2017 | davef
James: This is not "breaking news." IPC-A-610F, Acceptability of Electronic Assemblies was released in July 2014. Both, ... * IPC-A-610G, Acceptability of Electronic Assemblies * J-STD-001G, Requirements for Soldered Electrical and Electronic Assem
Electronics Forum | Sun Apr 15 14:01:10 EDT 2018 | mekmat544
Dears, I would like to aks you, about minimal distance between solder pads for THT components for selective RoHS soldering. Is there some standarts, where I can find this information? Enclosed is draft, what I mean. Thank you very much for your suppo
Electronics Forum | Thu Mar 15 16:49:16 EST 2001 | mparker
Whew, what set you off, amigo? You're absotively on target. Those book authors are writing to their own peer group audience, therefore all you get is techno geek jargon. It takes a seasoned (basted lightly)veteran to interpret. You know, the battle h
Electronics Forum | Thu Oct 21 11:32:15 EDT 1999 | John Thorup
Larry Elaborating on the specific question, yes, the volatile solvents in the flux can and will evaporate. Evaporate completely in any reasonable amount of time? Probably not. What tends to happen is that the exposed paste dries on the surface and
Electronics Forum | Thu Mar 04 20:26:11 EST 2004 | davef
Alloying lead does not affect its vapor temperature. As you and others mentioned, the vapor temperature is well out of the range of your processing temperatures. Some people concern themselves about potential health hazards of lead by thinking abou
Electronics Forum | Mon Jun 13 11:56:29 EDT 2005 | patrickbruneel
Hi All, There are IPC drafts in circulation IPC-1751, Generic Requirements for Declaration Process Management and IPC-1752, Materials Declaration Management. To me it looks like the regulations become more tolerable towards lead in solder Lead in s
Electronics Forum | Tue Aug 16 12:24:56 EDT 2005 | patrickbruneel
Ok Josh if you insist, The directive is under ongoing review and deadlines are pushed further and further. Here's a link to a proposal of 18 new exemptions. http://www.dti.gov.uk/sustainability/weee/RoHS_Regs_Draft_Guidance_August_2005.pdf If you l
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