Electronics Forum | Sat Dec 04 08:30:18 EST 2004 | davef
We're unaware of any such reaction. The RoHS Directive bans the use of six hazardous materials. The materials are four metals: lead, cadmium, hexavalent chromium, and mercury; and two brominated flame retardants: polybrominated biphenyls (PBB) and p
Electronics Forum | Mon Oct 09 21:17:24 EDT 2000 | Dave F
I don't get the no-lead thing, but it's good marketing so, whose to fight it? Yano? If I didn't get the no-lead thing, I'm double clueless about bromine. That is until I read a recent (8/00) article in PCFAB magazine. I away thought of bromine as
Electronics Forum | Mon Mar 27 20:59:41 EST 2000 | Dave F
Garo: Voids are primarily process indicators. There is experimental evidence that voids retard crack propagation locally around the void on a temporary basis. There is no standard, IPC or otherwise, on voids--nor should there be. See also J-STD-013,
Electronics Forum | Mon Jun 23 12:50:49 EDT 2003 | russ
There are coatings available for Stainless that will greatly retard the solder from wetting to/eating the metal. This may be a cheaper route to go than Using all Titanium. The coating is melonite QPQ (quench-polish-quench)I really don't have any mo
Electronics Forum | Wed Sep 22 13:56:24 EDT 2004 | GS
Hello everybody, are this the values still required by RoHS or there have been some modification ? - Maximum concentration Lead (Pb) 0,1 weight% - value of heavy metals Mercury 0,1 weight% - Cadmium 0,01 weight% - Chromium VI 0,1 weight% - Maximum
Electronics Forum | Fri Mar 04 07:19:19 EST 2005 | sureguo
I guess it would be the work related reaction as there is many hazardous substance in the SMT process, such heavey metal, flame retardant, which are known for its hazard to enviroment and human health. actually, in our factory, maybe because of lack
Electronics Forum | Thu Oct 19 09:54:38 EDT 2006 | stepheniii
Don't confuse ROHS compliant with "able to take higher temps". In fact I think some parts lost some heat tolerance when they went ROHS compliant. Don't forget that some fire retardants are on the banned list. I do know that before we even heard of R
Electronics Forum | Wed Jun 18 07:58:23 EDT 2008 | davef
Hi Stu Some seem to believe that vacuum baking will suck moisture from components and boards. Actually, the case is just the opposite. * Without proper definition and control of process parameters, vacuum baking retards the removal of moisture * Eve
Electronics Forum | Wed Jul 29 18:51:29 EDT 2020 | davef
You're asking about unclad FR4 [G10 is not flame retardant] Just ask for 0/0 unclad FR4. Thicknesses: 0.010", 0.020", 0.031", 0.047", 0.059" 0.090" & 0.118" "What do you folks do when you need custom formers?" Call Butler Winding [I receive no benef
Electronics Forum | Fri Mar 11 18:30:50 EST 2005 | davef
Russ: In December 2003, the European Commission released the following statement: �The commission services have prepared a draft Commission decision establishing maximum concentration values pursuant to Article5(1)(a) of Directive 2002/95/EC. The pr
