Electronics Forum | Tue Oct 16 14:04:38 EDT 2007 | schwende
Ian, Please feel free to contact me directly at Dschwendeman@csi-company.com to receive the information you requested. Regards, Dan
Electronics Forum | Thu Nov 01 10:09:18 EDT 2007 | slthomas
Lke Pete C said it's specified by the manufacturer of the paste, but it's also board specific. We print a lot faster on boards with nothing smaller than 50 mil pitch than we would on 16.
Electronics Forum | Sat Nov 10 23:10:13 EST 2007 | mika
Hi Real Chunks, Nice to meet you. Well, I certainly not agree with you. Sorry. Can You be a little more specific about your claims, about my statements? Do you know what you are talking about? I wish no polemic about this. Best Regards, Mika
Electronics Forum | Mon Jul 07 17:25:04 EDT 2008 | thughes
I'm curious to know what the pitch of the outer pads is/was on your device. Also, is this a general formula you use on all of your QFN devices or was this for one specific device?
Electronics Forum | Wed Nov 21 07:52:15 EST 2007 | avalancher
Hello! You may want to be more specific whereas each of those companies produce different machines. You have basic introductory machines, and high-end machines. Some provide faster speeds, some provide a wider range of component handling.
Electronics Forum | Mon Nov 26 10:59:43 EST 2007 | jseagle
We have a small 2mm square solid white box silkscreened on each board for badmark recognition. You may be able to do the reverse of putting something like "white out" in a specific area to act as a badmark.
Electronics Forum | Wed Nov 28 02:43:00 EST 2007 | philip_yam
Hi all, For leadfree HASL finish, is there any specification or guidelines for contamination level, esp Cu% to refer? How can we ensure the HASL finish composition is reliable for assembly? Thanks..
Electronics Forum | Wed Nov 28 22:33:24 EST 2007 | davef
There is no specification for lead-free HASL. You can use any lead-free solderability protection that meets your customer requirements. Use IPC-9701 �Performance Test Methods and Qualification Requirements for Surface Mount Solder Attachments� to ass
Electronics Forum | Fri Dec 07 07:15:26 EST 2007 | realchunks
Try profiling your board. How can anyone say your profile is good without knowing the board size and specific parts on it.
Electronics Forum | Mon Dec 17 14:16:44 EST 2007 | realchunks
This is funny. Poeple giving answers to a question that isn't specific. What if the shorts he is having are on the top of his board, caused by flooding or Omega wave too high?
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