Electronics Forum | Wed Jun 15 00:33:11 EDT 2005 | Frank
You didn't state if you are using all CAD data or not. If you are not using any CAD data then all bets are off. If you global fid XY data and all your placement XY data are all from CAD data, but you are manually teaching your local fids, then they
Electronics Forum | Fri Jun 10 17:57:17 EDT 2005 | ratsalad
Does anyone have a suggestion on where to get a relatively inexpensive CMM for measuring my SMT accuracy? Even an XY table with a digital position display would be pretty handy to have. I use mostly Panasonic equipment at my current company, and I
Electronics Forum | Thu Jun 16 22:33:54 EDT 2005 | davef
Peter: Please explain: * You say, "The cooling phase is important to perform the strength of the solder joint." [We agree that fast cooling rates produce fine grain in solder and that fine grained solder connections are stronger than coarse grained.
Electronics Forum | Mon Jun 20 21:54:38 EDT 2005 | darby
Contact your paste supplier and see what they say. My information on SAC 305 FROM MY SUPPLIER was - "The cool down rate is not as critical for Pb-free solder joints, as it was for SnPb. The grain sizes do not differ is size in the Pb-free bulk solde
Electronics Forum | Fri Jun 24 13:56:05 EDT 2005 | John S
This is a little late, so I hope you've been in contact with E-vert. We've experienced the same thing on our two vectra's. It normally happens right after a bad electrical storm. The shared drive will have to be reprogrammed. E-vert can fax you a
Electronics Forum | Mon Jun 13 11:56:29 EDT 2005 | patrickbruneel
Hi All, There are IPC drafts in circulation IPC-1751, Generic Requirements for Declaration Process Management and IPC-1752, Materials Declaration Management. To me it looks like the regulations become more tolerable towards lead in solder Lead in s
Electronics Forum | Tue Jun 14 10:38:53 EDT 2005 | Stefan
500 rejected (?) per million placed components is a very good rate, considered that it would be better than 4 Sigma if you name it defects on the board. Or do I incorrectly convert ppm to dpm? * 3 Sigma 66,800 defects per one million opportuniti
Electronics Forum | Tue Jun 14 15:03:15 EDT 2005 | slthomas
In that the machine times out and waits for a feeder refill and doesn't just skip that part and leave the space empty, it's not a defect. I have found 500ppm *fairly* easily attained in SMT depending on the board mix and how you define (1) a defect,
Electronics Forum | Tue Jun 14 12:19:29 EDT 2005 | ratsalad
I'm not a Mydata user, but I know some people who have used them for prototyping. They swear by them for flexibility. I was at Mydata over by Boston a few years ago, and they had a refurbed machine there for about $50,000. If I remember correctly,
Electronics Forum | Sun Jun 19 05:35:34 EDT 2005 | olas
Hi Rob, I've been using Quadras for many years and I find them very useful for prototyping and small batch productions. The software is very easy to use and you may import many CAD formats by an off-line software. The laser centering system is able t
