Electronics Forum | Sun Mar 23 13:39:39 EST 2003 | MA/NY DDave
Hi, From re reading, I think I did OK with my previous message yet I wanted to hit some other items, maybe differently. Without checking all the sources I don't believe there are any industry wide standards. I am sure and know there are industry
Electronics Forum | Wed Apr 30 19:55:21 EDT 2003 | Mike Konrad
In all likelihood, you may not be leaving flux on the board rather you may be leaving saponifier on the board. Improper rinsing is a leading cause of cleaning related board failures. The problem with some inline cleaning systems (especially old o
Electronics Forum | Mon Jun 23 04:00:43 EDT 2003 | Paul Cooper
Hi there There are a number of things worth considering when viewing bga's. Firstly, like any other solder joint that you have been inspecting for years, suface finish is critical. Secondly, and again like other joints shape is important. Now it may
Electronics Forum | Wed Sep 10 09:56:18 EDT 2003 | vickt
5 years ago (mostly likely 7-8 yrs). Most of these failures can be attributed to simple overtemp conditions or mechanical stress. Customers who do not keep the cooling fan filters clean on their machines tend to see a higher failure rate due to highe
Electronics Forum | Fri Oct 17 20:56:37 EDT 2003 | Mike Konrad
First, I should state that my company manufacturers batch and inline de-fluxing systems. Because we manufacture both formats, we remain unbiased. In fact, it is in our best interest to recommend inline cleaners since they sell for considerably more
Electronics Forum | Thu Oct 30 21:55:27 EST 2003 | johnwnz
Now I've checked the archives on this and found the starts of an answer but not much else, but then that posting was a while ago and I though there would be some more data now. So here's the question: who, if anyone is placeign Pb-free BGA's (ideally
Electronics Forum | Tue Jan 13 19:16:03 EST 2004 | pjc
Dedicated tooling uses what MPM calls an "H" tower. You mount the board support plate (dedicated tooling) on top of the H tower. If boards are only single-sided SMT, meaning only components on one side, the board support plate is flat with vacuum hol
Electronics Forum | Wed Jun 23 10:05:17 EDT 2004 | exmaintenanceleader
Hi Grant, I'm ex Fuji service engineer I install also at Sagem Czecz Republik (Kladnow near Prague) in 2000 they use at new lines MPM- 2XCP643E and 1xUniversal GSM (French owen (I do not remember the exacly tipe) at second hand line they use 2x and
Electronics Forum | Thu Aug 26 13:20:56 EDT 2004 | pjc
Machine design plays a major factor in actual placement rate vs. the published tact time max speed. For example, random access horizontal turret head machines can vary greatly depending on nr. of different components and size ranges, while the dual g
Electronics Forum | Tue Sep 21 09:49:50 EDT 2004 | Pomponio Magnus
Has anyone ever seen the distributions that result when plotting percent voiding? (Typically a BGA will have enough balls that you can get oogles of data.) I have seen this and seem to be noticing a pattern. First, they are not all normal, so your
