Electronics Forum | Wed Jan 18 16:03:08 EST 2006 | Klevesqu@vtc.edu
Hello, I am wondering where I can purchase and read up on the specs for the proper solder flux pastes for Luxeon emitters. I notice in there aplication briefs they mention 380SR-flux gel and a few others but I no clue if that is a model number or wha
Electronics Forum | Tue Apr 18 10:56:35 EDT 2006 | jaymcgowan
I am working on a new product that has a flex circuit attached to an 8 layer motherboard. There are 25+/- connections. I am investigating hot bar soldering vs ACF (conductive film) to make the attachment. I am looking for literature/papers/experim
Electronics Forum | Sat Jun 10 07:27:24 EDT 2006 | davef
Chuckie: SM4007A Diode case is D0-214AC G. Eisner: On tombstoning: * Check reflow profile * Pads per IPC-SM-782 * Reduce amount of solder paste * Check component solderability * Place component accurately * Search the fine SMTnet Archives for backgr
Electronics Forum | Wed Jun 28 21:50:18 EDT 2006 | adihsr
BGA is better- in terms of 1.0 no bent leads or coplanarity problems 2.0 self align on solder pads 3. easy solder printing 4. large pitch ...I think those who goes for QFP have not had a strong SMT experience. Do not be hurt byt this is a basic SMT D
Electronics Forum | Fri Aug 04 07:44:09 EDT 2006 | aj
Hi, Have you incorporated any Aperture Modifications in your stencil.( i.e. Homebase / 10% reductions). I have a similiar problem here with one of our high volume builds and I am in the process of ordering a new stencil with recommeded aperture red
Electronics Forum | Fri Sep 08 11:32:19 EDT 2006 | darburch
Solder joint too shiny, clock wrong color, she's got my chair, radio too loud, can't hear the radio, I'm too hot she's too cold change the A/C.Kindergarten wasn't this petty.OH, wait this is a heath and safety issue, I need the day off with pay. Why
Electronics Forum | Wed Sep 13 09:15:19 EDT 2006 | Rob
Hi Peter, Out of the 1.5 billion components we shipped last year, we had 3 components back for solderability issues. All 3 had been taken out of their vacuum packaging and left to oxidize for a number of weeks. We don't see it as an issue, but we
Electronics Forum | Mon Sep 25 23:09:24 EDT 2006 | Chris G
I would suggest an Electrovert EPK Plus. It is cheap, easy to maintain, and Electrovert provides good support. You can get a refurbished lead free EPK for less than 50k. They usually come with USI spray fluxers, which is a pretty good thing, and c
Electronics Forum | Tue Mar 20 07:27:26 EDT 2007 | davef
You need to keep the silver concentration of the solder connection below 2 percent by weight. Concentrations above that level can cause solder connections to fail. We have seen 4 percent concentration discussed. [The 4% assumes a uniform distributi
Electronics Forum | Mon Sep 24 12:47:37 EDT 2007 | PJ
I am doing some research on flux free/flux less SMT reflow soldering. Do you have any equipent/process recommendations? Does anybody use it for volume production and what are the constraints (finish, balls, paste, vacuum, pressure, size)? What is
