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 | 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 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
Electronics Forum | Tue Dec 16 15:00:45 EST 1997 | Chris Fontaine
I am looking for information regarding the removal of parylene through a plasma etching process. Any information about this subject, or the plasma etching process in general would be greatly appreciated. Vendor comments are also welcome. Thank y
Electronics Forum | Mon Dec 22 18:20:33 EST 1997 | Graham Naisbitt
Brett and Chis, The method I understand to be the most popular is the use of micro-blasting or abrasion. In other words mechanical rather than chemical removal. However, that is only part of the problem - how do you repair the coating? The technique
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 | Fri Sep 10 08:23:34 EDT 2010 | duso02
We have done it before prior to conformal coating a customer's populated board with parylene. They had us do a sample first then conducted testing. No ill effects but it really comes down to the components installed and what they can handle. The surf
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