2820 ipc results

Electronics Forum: ipc (Page 94 of 282)

Any different between Flat Ribbon and Gull Wing Component?

Electronics Forum | Thu Apr 12 15:53:59 EDT 2007 | realchunks

Steve is right. There is a difference between flat ribbon "devices" and flat ribbon "cable". IPC standards are the same for flat ribbon as gull wing. Here's a pic for example: http://www.topline.tv/FLATPACK.html

What is 'toe down configuration' 8.2.5.6 IPC-A-610D?

Electronics Forum | Thu Apr 12 08:16:19 EDT 2007 | davef

Toe down solution: * Land pattern design * Solder stencil design * Proper component fabrication Normal gull wing lead solder requirement: Solder must extend to the mid-point of the outside of the lead bend.

0402 aperture design lf

Electronics Forum | Sat Apr 14 04:33:44 EDT 2007 | aj

the footprint is IPC standard which I have found to be less forgiving than the Jedec one for tombstoning. Enig finish - 5 thou stencil. We have historically used homeplate design but I am leaning towards 1:1. Leadfree application. aj...

IPC Conference Raises New Lead-free Reliability Concerns

Electronics Forum | Tue Apr 17 02:34:58 EDT 2007 | Wayne

Now, they realized the problem of the current leadfree alloys. Is there any leadfree alloys finalized to use in future? Will it be a four elements alloys instead of current three elements alloys (eg SAC)?

IPC Conference Raises New Lead-free Reliability Concerns

Electronics Forum | Tue Apr 17 09:54:49 EDT 2007 | patrickbruneel

The only way to resolve these issues is to bring back the good ol� lead and make the joints ductile instead of brittle for an affordable price. Thanks for the link Dave

IPC Conference Raises New Lead-free Reliability Concerns

Electronics Forum | Tue Apr 17 10:14:29 EDT 2007 | patrickbruneel

Or this might be the right solution Alternative lead free soldering reviewed: http://circuitsassembly.com/cms/content/view/4665/95/

IPC Conference Raises New Lead-free Reliability Concerns

Electronics Forum | Wed Apr 18 02:59:17 EDT 2007 | lococost

lol, you see, all our problems will soon be solved with SodiT potatium solder, dont worry!

IPC Conference Raises New Lead-free Reliability Concerns

Electronics Forum | Fri Apr 20 09:45:19 EDT 2007 | patrickbruneel

Here�s another article on lead free solder joint embrittlement http://uic.com/wcms/WCMS2.nsf/index/Resources_75.html

How many times wave solder?

Electronics Forum | Thu Apr 19 10:59:05 EDT 2007 | peteb

Greetings, Is there a Mil Spec or IPC spec on how many times you can wave solder a PCB? I did a search on this forum with no results. Common sense says two or three times. I need documentation.Thanks for any info.

IPC Standard for mechanical Hardware

Electronics Forum | Wed Apr 25 10:59:15 EDT 2007 | slthomas

I don't know of any standards that apply to hardware at the component level. I would think, though, that unless the spec. sheet for the component specifies cracks there shouldn't be any.