Electronics Forum | Mon Apr 13 17:03:40 EDT 1998 | EFData
We are having some difficulty soldering a 240 pin Altera device. We use Alpha WS-609, a very generic profile for that solder paste, and a 6 mil stencil with laser cut apertures (1:1 ratio). This is a 20 mil pitch device (aperture size is 10 mils X 75
Electronics Forum | Wed Mar 11 10:58:58 EST 1998 | Earl Moon
| | What does the term "poor wetting" mean as a defect code ? "Poor" should mean unacceptable when surface (component or PCB solder termination areas) wetting does not provide acceptable solder joints. Unacceptable wetting of PCB solder termination
Electronics Forum | Wed Oct 17 10:37:13 EDT 2001 | davef
Help us understand your situation better: ARE THE QFP BOWED? If so, * Where are the QFP bowed? * Is the QFP body bowed or is it just the leads? * How much are the QFP bowed? * Are all QFP the same part number, from the same supplier, date code
Electronics Forum | Thu Nov 01 08:27:13 EST 2001 | KR
I'm not positive, but I believe the 4785 library is not in an off the shelf database format. The software for the HSP4785's was written by Sanyo, and I think they used a proprietary database format. I do not know of anyone outside of Sanyo that can
Electronics Forum | Tue Jan 15 06:05:37 EST 2002 | Romain
Dear all We have since few weeks problems with BGA solder joint integrity on ENIG finish. Under relatively very flexible of the FR4, the joint breaks between ball and PWB. When we take off the BGA for analysis, some of the pads seem very flat, totaly
Electronics Forum | Fri Mar 22 09:22:44 EST 2002 | itempea
Steve, don't forget that the first assessment you should make is whether a CP6 is what you really need. It's highly reliable, fast, but no so flexible. For a low volume, high mix, it might not be your best bet. Other things to consider: - the exper
Electronics Forum | Thu May 22 11:25:35 EDT 2003 | nad
Hi Jon, I recently had the opportunity to look over a used IIIc converted to a IVc. The documentation, software and spare parts supplied with the machine seem more than adequate, however, upon spending several hours cleaning, oiling, familiarizing,
Electronics Forum | Thu May 22 17:17:37 EDT 2003 | ssnow
I have to agree with you on the documentation side of the manuals ,they were written before they ever hired a tech writer, when they finally did they wrote manuals for the newer stuff and let the older machines alone. The basic's are pretty straight
Electronics Forum | Thu May 16 15:05:20 EDT 2002 | Hussman69
No need to make rocket science out it. Buy an AOI mchine. If that's too expensive, scrap a board to use as a sample. Can't do that, use a digital camera and snap a couple pix of a good board and make some kick ass work instructions to use. Can't
Electronics Forum | Tue Jul 23 12:02:17 EDT 2002 | gdstanton
Ken, Excellent discussion!!! I've also seen this problem. Spent and am still spending significant time policing. I don't think it is just a buyer issue though. There are many dimensions to the problem. Suppliers, Engineering, Manufacturing, and
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