Electronics Forum: thread (Page 4542 of 7903)

132 QFN footprint

Electronics Forum | Mon Sep 03 10:50:47 EDT 2007 | kissanepat1

A suggestion for your stencil which works is as follows. Cut your stencil aperatures beyond your pads to a length of 0.1mm , this then allows the paste to pull back into the pad creating a blob of solder which can be inspected by AOI.Best length and

Homeplate design

Electronics Forum | Wed Jul 25 13:29:24 EDT 2007 | realchunks

Hi Lloyd, Homeplates will get rid of solder balling. They are only recommended "backwards" for 0402 or smaller (Points point away from each other). If you do this, you will have a full pad width of paste on the pad for the part to stick in. Obvio

Who's heard about

Electronics Forum | Mon Jul 30 12:48:28 EDT 2007 | stepheniii

I like how one of the articles mentioned the Segway. That had huge amount of hype about how the world would be changed. Then it turned out to be a scooter. I wonder if this "it" is PCBs manufactured in a printer. I think that technology is interesti

Who's heard about

Electronics Forum | Wed Aug 01 11:51:05 EDT 2007 | patrickbruneel

With the rising cost of lead-free, reliability and many other issues I�m sure �it� will get some serious reviews by OEM�s. Comparing this technology with leaded soldering I agree with you Chunks. But it sure does make a whole lot more sense than lea

Who's heard about

Electronics Forum | Wed Aug 01 12:16:58 EDT 2007 | realchunks

So how do you think they plate the vias to the components? This was where the cost came in when trying this. Now how do you keep multi-layers together without putting undo pressure on you components? Thru-hole components still would require solder

Who's heard about

Electronics Forum | Thu Aug 02 07:55:55 EDT 2007 | hussman

I guess if you never actually had the responsibility of really building any product,this may look like rocket science. It does sound like a great theory. But just like the Segway, under the right conditions, for just a few instances, it may fit a s

Who's heard about

Electronics Forum | Thu Aug 02 10:09:26 EDT 2007 | shrek

Krikies me company has just moved me to quality department, me lads. Therefore I will be changin' my tune chap. Gettin' back to this "It" donkey malarky, if you manufacturing slugs find a way to build it, krikies, you'll still get it wrong just lik

Who's heard about

Electronics Forum | Thu Aug 02 14:25:15 EDT 2007 | patrickbruneel

Goat piss now that is a great example of a renewable resource. But if the goat chews on toys made in china you have leaded goat piss. Have you seen this article? http://www.cnn.com/2007/US/08/01/toy.recall.ap/index.html I believe lead in electronic

Who's heard about

Electronics Forum | Thu Aug 02 15:15:52 EDT 2007 | realchunks

Yes I have. Leaded toys, anti-freeze toothpaste, cardboard biscuits, glue-less tires... the list goes on. And it's only about 1/1000th of what is caught. But in China's defense, why not sell this stuff to the U.S.? They boost their economy and ki

Who's heard about

Electronics Forum | Thu Aug 02 17:27:54 EDT 2007 | jmelson

This process is going to make conventional rework, and most mods and ECOs impossible. You might be able to make some changes by patching a component across the exposed pads, but most of the circuitry will be buried. You could, of course, make speci


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