Electronics Forum | Thu Mar 14 17:10:22 EST 2002 | stepheno
I've been looking at buying a trace repair kit. The one I'm looking at includes some nifty little bits for a dremel or whatever. What I was wondering is, if someone is going to cut traces with a dremel, would you reccommend getting the stand for it
Electronics Forum | Sat Mar 16 18:06:31 EST 2002 | davef
First, you're correct. Trace repair and rework is not for the faint of heart or novices. Second, our "girls" prefer a dental drill type tool [Dremel Flexshaft], rather than the clumsy Dremel type from Wal-Mart. They also like a vice with a unversa
Electronics Forum | Tue Mar 19 00:14:47 EST 2002 | ianchan
Hi Guys, Can anyone help us out here, please? We need to know what formulae (other than Length(L)xBreath(B)xheight(Z)), is used to determine what volume of paste is required for 20mils pitch leadless chip carrier (LCC28), for the paste printing pro
Electronics Forum | Thu Mar 21 13:59:24 EST 2002 | vargas_s
We are actively looking to buy a Fuji CP6 series placement machine in the used market. We constructed a questionnaire for perspective sellers trying to get as much information out of them as we can regarding possible machines (serial numbers, dates,
Electronics Forum | Fri Mar 29 10:51:20 EST 2002 | lsmith
The IPC-EM-782 reads as follows: the adjustment factor is usually intended to increase the Z dimension slightly, but brings the Z maximum up to an even equivalent. Example if Zmax is 2.100mm then you would enter an adjustment factor of .100mm. The ad
Electronics Forum | Thu Aug 08 16:41:18 EDT 2002 | davef
On our last thing like that [5X5, 32, er 28?], we printed bumps on the QFN, but you can't do that, so there's no sense in tormenting you. Ideas that come to mind are: * Search around SMTnet for a paper by Chrys Shea on controlling dispense shots as
Electronics Forum | Thu Mar 28 14:04:16 EST 2002 | davef
Intermetalic Layer (IL). A compound formed at the interface of two different metals, whose atoms have an extremely high natural attraction for each other, so high, that they do not bond to other elements by any other means. Also, intermetalic compo
Electronics Forum | Sun Mar 31 10:03:25 EST 2002 | Bob
Cheers Dave, to answer some of your questions. � The component lead is copper with a tin / lead coating. The pads are standard Copper / Nickel / Gold. � The solder is standard Tin / Lead / Silver (2%) We have a lab that can determine the composition
Electronics Forum | Sat Mar 30 10:50:38 EST 2002 | stefwitt
Some earlier machines with mechanical component alignment could be bought with electrical test options ( Mydata, Siemens o.a.). This is, to my knowledge, the only method to identify chip components prior placement. The downside was a high reject rat
Electronics Forum | Mon Apr 01 05:55:54 EST 2002 | nifhail
Anyone with selective wave experience ? I'm buying the Selective Wave machine and trying to workout the comparison matrix. Can someone tell me what criteria should I look at when listing down the matrix ?...things like, min clearance to the high prof
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