Electronics Forum | Wed Apr 15 17:16:00 EDT 2009 | rmitchell
Hi, I am trying to reduce some 0402 cap tombstones. The main cause is the pad spacing is a little too far apart and the parts are as tall as they are wide .5mm I am stuck with the pad spacing for a while. All other parts are soldering well, even 0
Electronics Forum | Mon Apr 20 14:59:14 EDT 2009 | c111
We are in a position where we have to purchase Leadfree BGA's and have them re-balled as leaded. I'm looking for some data from anyone who has done large volume outsource. 1) What percent fallout should I expcet from the re-balling process. 2) After
Electronics Forum | Wed Apr 29 08:24:55 EDT 2009 | davef
Commonly when we see solder balling, we think "too much paste." As a result, we pinch the apertures or change the shape to a "home plate." We don't think that's what's going on here. But what if this component has a thicker solder plating on its ter
Electronics Forum | Thu Apr 30 01:44:45 EDT 2009 | nibirta
sorry. i forgot to mention. we have now two cases! one with two different lots of solder paste and one with a bad lot of components. May be u are right. Somebody did something. By the solder ball test on glass no solder balls were found. Only in the
Electronics Forum | Fri May 01 14:39:43 EDT 2009 | jdengler
Swapping a servo amp out does not lead to an alignment issue unless the new amp is way out of adjustment. Did you do a "drift" adjustment after changing the amp? Does the axis vibrate badly while moving? More likely is someone crashed a head which
Electronics Forum | Fri May 15 15:09:03 EDT 2009 | pcbrookie
We recently added a 7-zone Heller, and have had a 5-zone Heller for quite some time. When the tech installed our new oven, we were told the new oven does NOT have the lifetime warranty on heaters and blowers. However, when we order parts for the ol
Electronics Forum | Wed Jan 06 04:43:22 EST 2010 | deltaservices
If you are working smt machines in Europe or US then your most important issue is setup time and operators needed to run the machine. People are way more expensive then machines. I know the assembleon machines, Gem line and the new MG lines are grea
Electronics Forum | Thu May 28 15:54:45 EDT 2009 | elmerito
Hello, We have designed a 160ball bga substrate. Now we want to use the same substrate for the 145ball version of the product. All are the same, the package size, ball pitch, solder ball size only the number of balls will change. We will use a new s
Electronics Forum | Mon Jun 08 15:27:25 EDT 2009 | grics
I need a sanity check... What are people on the forum using for board labels in their lead free process? As most well know, polyester will not survive the heat of the Reflow at Pb Free temps. I am having trouble justifying the cost increase (appr
Electronics Forum | Thu Jun 25 07:54:02 EDT 2009 | brucow
Hi and thank you for your replies, I feel a lot more confident about tackling the job with your instructions, many thanks. We haven't seen any accuracy issues, and the ballscrew has been making the same banging/knocking noise when changing direction
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