Electronics Forum | Fri Nov 19 10:56:03 EST 1999 | Kol Chokrotti
chem. Clean ->Electroless Cu ->Clean (hot air)->Electroplating->Inspection. We have checked chemicals, possible contamination and plating current requirements for that specific program�. Everything seems all right. Appreciate if someone could give
Electronics Forum | Wed Jan 05 18:31:30 EST 2005 | russ
It is possible to re reflow (is that right?) these assemblies. You will probably have to mask off or remove the through hole components if they cannot withstand the reflow temp. I would recommend however, that you utilize a hot air process to ins
Electronics Forum | Mon Sep 29 12:31:51 EDT 2008 | omid_juve
Thanks but we have QFP208 package here that after the reflow soldering during to the bad coplanarity of these devices some pads doesn`t have enough solder or not soldered. so we decided to use a qfp nozzle that can be placed on a QFP pads and use a
Electronics Forum | Tue Jun 16 15:06:48 EDT 1998 | Bob Willis
I must say that I feel when the board has been correclty designed with corner marks on the edge of the BGA the optical systems are not necessary on 0.50/0.060" pitch. I like both air and IR the IR has the major benifit that you do not need all the ex
Electronics Forum | Fri Mar 19 16:13:00 EDT 2010 | davef
The aluminum material is typically plated by a zincation process, followed by nickel plate and a gold flash layer. What do the soldered side of the component and the soldered side of the aluminum coin look like? Do they both take solder?
Electronics Forum | Tue Sep 28 22:43:26 EDT 1999 | Dean
| I finaly get a vacation and decide to go to the forum and low and behold it's hot air verses a small ray of sun.I read every thread and still failed to see any real argument either way? I love rework as an assembler. I hate rework as a shop owner.
Electronics Forum | Wed Sep 20 09:37:15 EDT 2000 | Erick Russell
Determining cost of rework is based on usage and application. Photonic soldering saves an average of 5 minutes per rework site in process time and may save a significant amount of labor. Depending on volume, and specifics on the application, the cos
Electronics Forum | Tue Sep 11 12:45:01 EDT 2007 | rgduval
Both questions will depend upon the IC specifications. Check the manufacturers recommendations for temperature specification, as well as reflow profiling. As a general rule, we don't like to rework a component more than 2 times after initial reflow
Electronics Forum | Tue Nov 01 15:26:43 EST 2005 | GS
Is it this your first experience of C-CGA RWK ? In order to approach a RWK of this kind of pakage it requires a capable process and clear operating procedure. In the past, the company who I use to work for, we rwkd plenty of this kind of CCGA. Earl
Electronics Forum | Thu Sep 23 20:57:13 EDT 1999 | Dean
| Jackie's posting recently and responses to it got me to dondering. First, recollecting, we bought an IR rework station a couple million years ago. It had a IR source on a stand, a bunch of lenses, and Reynolds aluminum foil for shielding near-by
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