Electronics Forum | Wed Mar 19 12:48:29 EDT 2008 | ratsalad
From what I understand, the major reason Sn prices recently escalated was a crackdown on black market Sn mining in Indonesia, where most of our Sn originates. Add to that increased demand (not necessarily from RoHS, but from China, India, and other
Electronics Forum | Wed Mar 19 15:05:20 EDT 2008 | patrickbruneel
Talking about lead-free idiocy. Here�s the result of what you get for being GREEN and paying trough the roof. Since the implementation of lead-free I don�t buy green shirts any more, because they charge me twice as much as the blue ones On the positi
Electronics Forum | Thu Mar 20 07:58:12 EDT 2008 | cyber_wolf
#1Run a Fuji gold board and see if the problem persist. Is your board clamp slipping? Fid camera tight? etc.. To see if you have a Y axis positioning problem: 1.Put the machine in mecha check 2.Go into Y-axis 3.Place a dial indicator so that the st
Electronics Forum | Thu Mar 20 09:55:11 EDT 2008 | swag
We have a class 3 SMT build that requires the paste conforms to J-STD-005 RE LO. We have not used a low activity flux in the past and would prefer not to have to change our wash process or change to no-clean paste for these builds. I have researche
Electronics Forum | Mon Mar 24 22:53:22 EDT 2008 | davef
As you say, just about defect can be tied to process, one way or another. If you want to think about it, search the fine SMTnet Archives for background on barrel cracking. Other things are: * How thick is the actual via plating from the two supplier
Electronics Forum | Mon Mar 24 14:19:36 EDT 2008 | burb1999
I have a DEK ELA and here is what happens. I print a board after going through the step and it is a dead on print. Then, with another print it will be off in Auto mode (sometimes up and sometimes down, seems to just be up and down not left to right
Electronics Forum | Tue Mar 25 12:08:53 EDT 2008 | ludee_circuits
My factory produces Printed Circuits Boards.Today, my customer says they encounter problem with solder ability issue. Some of the boards have difficulties during SMT solder flow. Could not stick to the pads and the components fell off. Those boards
Electronics Forum | Thu Apr 17 18:37:57 EDT 2008 | darby
Contact i-pulse. I would be surprised if they did not allow you access to the user site. I don't know what there policy is on second hand purchases through an un-authorised agent but they have always been great with me. This is the user site, but yo
Electronics Forum | Fri Apr 11 06:22:04 EDT 2008 | andrzej
Hi Andrzej, > > We are using for BGA (0.8 pitch) > square apertures size 0.4 mm (rounded corners r = > t) and stencil thickness t=5 mils. So area > ration-_ w/4t=0.8 > > Regards Jan Hello Jan, I understand that you have the same pad dimensio
Electronics Forum | Thu Apr 17 16:59:44 EDT 2008 | jmelson
What sort of parts are you looking for? I'd think the springs are fairly non-critical, and easily picked out of a big spring catalog. There are some E-clips and such things, but everything else (in their older feeders, at least) look totally custom
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