Electronics Forum | Fri Jun 03 14:31:33 EDT 2005 | Peter
I am working on an application requiring removing BGAs from a board coated with parylene. These BGAs have low standoff with less than 0.015" after SMT soldering. Can some comment on a reliable and consistent process to perform such rework? given tha
Electronics Forum | Wed Jun 08 13:06:36 EDT 2005 | jimby
You will have to machine the part off down to the top of the balls. Wick solder off from individual sites one at a time. All that will be left is Parylene shell where balls once were. Take an orangestick and alcohol to break up and remove. Tricky par
Electronics Forum | Fri Jun 03 16:35:40 EDT 2005 | davef
We've never tried to remove Paraylene from a BGA, but we stayed [in seperate rooms] at the Red Roof Inn. Parylene/Paraxylyene is a great coating and can be selectively removed by several methods. IPC-7711 (Rework of Electronic Assemblies) has a sect
Electronics Forum | Mon Jun 13 07:44:15 EDT 2005 | bandjwet
Peter: Based on our company's experience with removing a variety of different coatings, including parylene, the BGA's can be removed. We would use a chemical etch followed by a neutralizing process. We would then reflow the devices and pry them off
Electronics Forum | Wed Jun 08 15:50:32 EDT 2005 | davef
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Electronics Forum | Thu Sep 08 18:41:17 EDT 2005 | bhu
Try parylene. http://www.vp-scientific.com/parylene_properties.htm
Electronics Forum | Thu Apr 10 11:26:10 EDT 2003 | Lake
Does anyone have any experience with parylene coated BGA's. Can they be masked so parylene doesn't get underneath? How do you remove and replace? Is machining them off the only viable option? If so are there any special requirements /special fixturin
Electronics Forum | Thu Apr 10 11:26:18 EDT 2003 | Lake
Does anyone have any experience with parylene coated BGA's. Can they be masked so parylene doesn't get underneath? How do you remove and replace? Is machining them off the only viable option? If so are there any special requirements /special fixturin
Electronics Forum | Wed Jul 06 15:56:22 EDT 2011 | duso02
We do parylene coating and really frown upon using a UV additive. Technically, it's a contaminant to the parylene.
Electronics Forum | Fri Dec 19 12:09:16 EST 1997 | Brett Goldstein
At my previous job I tried to remove parylene using a plasma etching process. I don't remember the parameters used, but I do remember this: we had almost no success in removing parylene using plasma etching. I'd be quite interested in hearing if y
