Electronics Forum | Mon Oct 19 15:08:14 EDT 2009 | markhoch
Would be glad to offer some assistance, but I've got a couple of questions first: 1) What type of supplemental flux are you using? (If any) 2) Is your problem consistent across all assemblers, or can you trace the assemblies with solder ball issues b
Electronics Forum | Mon Oct 26 12:56:23 EDT 2009 | rgduval
Eric, Protective sleeve? The sleeving protecting the wires of the thermocouples? I bought mine direct from Heller. I think it was $90 for a set of 3 (my oven uses 3 thermocouples). They are close to thirty feet long (I'm guessing...they're much
Electronics Forum | Tue Oct 27 16:22:00 EDT 2009 | davef
It's not the first thing we think of in looking at your picture. First off, the lack of copper in the region of the red oval makes us think of a plating defect. We don't expect that moisture out-gassing through the barrel wall to show-up on opposite
Electronics Forum | Tue Nov 03 18:09:17 EST 2009 | gregoryyork
I think most have summed up the first pictures also is the drillng looking like it is misregistered as well. Better to do a solvent test to determine resist cure not the old stuff the newer chemicals show under cure problem much better. Try your st
Electronics Forum | Tue Nov 03 23:34:42 EST 2009 | vinitverma
Hi Mike, Frankly, no. I've not contacted the equipment manufacturers directly because I'm not sure if they'd like to support. Secondly, it'll take a hell lot of time to find the right contact within different manufacturers! Getting sample files from
Electronics Forum | Thu Nov 05 16:56:38 EST 2009 | lynn_norman
In a previous job, we had torque off requirements for different sized components for our screen print adhesive (non-conductive in our case). We used a torque watch that would measure max torque, so we could test production boards, shear testing was
Electronics Forum | Wed Nov 04 08:49:44 EST 2009 | kpm135
Its been a while since I've worked with a QSP-2 but I seem to remember that they should have a puff off value where the machine will actually blow the part off of the nozzle. I think it was adjustable under the component handling but I can't remember
Electronics Forum | Thu Nov 12 04:35:13 EST 2009 | sachu_70
You can certainly venture out to the nearest lab for in-depth analyses. But since you mention 2-3% defectives in a batch, there is much you can do in-house as well. Measure the height of your solder paste deposit (in zero print gap condition)across a
Electronics Forum | Thu Nov 12 09:32:30 EST 2009 | spitkis2
Take a look at http://www.atco-us.com/products/info/3 . Benchtop version is also available. A full forced convection oven delivers much better thermal uniformity than an IR/forced air combo system. When comparing different ovens, some things to
Electronics Forum | Mon Nov 30 21:28:54 EST 2009 | davef
"Environment Friendly Electronics: Lead-free Technology", J Hwang, Electrochemical Publications, 2001 [0901150401], Chapter 6.2, contains a significant amount of data on 58Bi/42Sn that may help you better understand the 58Bi/42Sn solder alloy. We'r
