Electronics Forum: copper and metal and delayering (Page 1 of 2)

cap size and copper thickness vs part size questions

Electronics Forum | Tue Nov 08 05:00:23 EST 2005 | rlackey

Hi CW, Regarding orientation, yes, your diagram is right - see the following link for confirmation. http://search.murata.co.jp/Ceramy/image/img/A18X/C2EB3C.PDF Regarding information on bending strength you want to talk to your local Murata office

solderability and hasl thickness

Electronics Forum | Wed Sep 10 12:56:09 EDT 2003 | davef

Intermetallic compounds [IMC]: * Form during the alloying process of some metals. In soldering these are Sn, Ni, Ag, Cu, Au. * Do not accept solder. * Increase in depth in logarithmic proportion to both time and temperature. [So during the solder

Conformal Coat and RTV

Electronics Forum | Wed Jan 03 21:20:22 EST 2007 | davef

Comments are: * General purpose RTV (RTV-108) releases an acetic acid (vinegar) during cure and corrodes copper, brass and sensitive metals. It is therefore NOT for use in delicate electrical or electronic applications. However, there is an electrica

Wave Cassettes and Heat convection

Electronics Forum | Mon Jan 15 09:19:29 EST 2007 | tk380514

We use Alpha EF-2202 low-VOC No-Clean flux Selective wave soldering cassettes Bottom pre-heating wave soldering machine We have one component that will not solder properly: http://www.epcos.com/web/generator/Web/Sections/ProductCatalog/Capacitors/Ul

Re: BGA and Gold Boards

Electronics Forum | Fri Jun 19 10:03:46 EDT 1998 | Earl Moon

| Has anyone had experience with placing BGA on gold plated boards. I thought I read a while ago there was a problem with embrittlment causing cracked joints. If anyone has experience with this your feedback would be great. | Mike Mike, We and ind

The truth about lead-free and environment

Electronics Forum | Fri Mar 24 12:16:37 EST 2006 | patrickbruneel

Darn Rob you're brilliant You just solved the dilemma of micro cracks and hot tear in lead free, just add a softer metal like.....and the joints won't crack. You wrote "BTW: Lead is far softer & dissolves far more easily than copper or tin, hence wh

The truth about lead-free and environment

Electronics Forum | Fri Mar 24 11:54:18 EST 2006 | Rob.

Hi Patrick, I'm patriotic to a point & that doesn't include supporting crap decisions, & those that have handled the ROHS & WEEE implementation have been beyond useless & should be locked in a lead lined room with Roman plumbing. Yes we need to r

Lead/Lead Free In-Line Wash and UT cleaners

Electronics Forum | Mon Oct 03 22:16:58 EDT 2005 | Ken

If that's the case, let your customer go. I have run into this situation recently. Q. Why do you not run a dedicated line for lead free? A. You (the customer) give less than 12 weeks forcast and expect us to have a dedicated line for your product?

Conductive contamination and the elusive solution

Electronics Forum | Fri Jul 13 09:27:15 EDT 2007 | losersk8er

Sorry I have just started working in this industry so I am not as familiar with everything. The probelm is with the Product shorting because of small pieces of metal stretching accross two leads of an IC. This could be a result of faulty equipment?

The truth about lead-free and environment

Electronics Forum | Fri Mar 24 11:12:06 EST 2006 | patrickbruneel

You�re a good man Rob and a good patriot, you defend your governments decisions even if they're wrong. Isn't the WEEE directive aimed at preventing electronics ending up in a landfill? This immediately takes away the leaching arguments and is a great

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