Electronics Forum | Wed Aug 15 06:16:30 EDT 2001 | JohnW
Ok so an update on the ceramic board. I've had some success but did have to cheet a little. So Dave, on the fluxing, your right we're not getting it all the way up the barrel and in the end as a short term fix we're dipping the lead's in flux not th
Electronics Forum | Tue Aug 14 21:43:44 EDT 2001 | mugen
Basic understanding, 1) the 2% silver (Ag) gives better shine *joint surface*. 2) Ag improves stength & fatigue resistance of solder joints 3) reduces leech-out of silver from silver-base substrates (eg of such silver-base surface contact: metalli
Electronics Forum | Wed Aug 22 21:11:25 EDT 2001 | davef
When it works right, it's a beautious thing. => When goes wrong, you have one board with some of the other board's material, not too coo. Scribed and broken ceramic has bad-butt sharp edges. You'll feel this sticky stuff on your hands, look down,
Electronics Forum | Tue Nov 27 19:50:23 EST 2001 | davef
So, which is it �falling off or tumbstoning�? Each has different causes. You say �It's apparent that these components were cured and in place prior to wave solder.� * Cure heat cycle maybe. But is the glue holding? I mean if your cure is real good
Electronics Forum | Wed Nov 28 09:17:17 EST 2001 | Dave G
I've heard of reliabilty problems caused by wave soldering melf's as well. We don't put Melfs on the bottom of our PCB's on newer designs. We only have to deal with gluing & putting them through the wave on some of our older legacy designs. Increasi
Electronics Forum | Fri Sep 07 15:17:01 EDT 2001 | seand
Hello Everyone, Speedline Technologies' Electrovert Division does offer a number of batch and in-line systems for your cleaning application. A good contact for you to reach to discuss the details of your application would be Bill Boyde at the facto
Electronics Forum | Fri Sep 07 15:20:27 EDT 2001 | ksfacinelli
We have two batch systems installed from Aqueous Technologies and have been very please with there performance and reliability. One machine is utilizing a 5hp pump and generates 60psi the other is a 3hp version and is about 40psi. I think the most
Electronics Forum | Mon Sep 10 17:07:23 EDT 2001 | Dave G
I've mounted the $%&R$#$&%$(&! pain in the neck shield clips in the past. (Excuse the simulated profanity- I couldn't help myself.) What we went to was a frame & shield combination. (The frames are cast & then plated w/tin. We have used both plastic
Electronics Forum | Tue Sep 11 21:12:08 EDT 2001 | davef
I am concerned that the increased number of commercial postings on SMTnet is degrading the technical content and diverting valid posters� attention from the proper exchange of information to non-value added ranting and finger pointing. In determinin
Electronics Forum | Fri Sep 28 09:30:07 EDT 2001 | kmorris
Just had a similar phenomenon 2 days ago. May relate to your issue --- or not. Like you, I did a once over looking for mechanical obstruction & couldn't find any. Ran a thermal profile on the offending PCB & all checked out. Looked in end of oven
