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Date: | Mon, 30 Nov 2009 07:54:47 -0600 |
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This is probably a general statement. You might be more specific on type of coating you are looking to use, and what type of BGA package you are considering it for, since there are various types.
We conformal coat with Acrylic and Silicone, and have had little or no problems coating BGA packages. We have coated the FR4 Encapsulated Type and the Metal Topped SBGA without incident for our customers.
I would consider the solvent used and package when considering the CC system you develop.
FYI
Rodney
VP of Manufacturing
Tri-onics LLC
Highland/Shanghai
(618) 654-9831 US office
Integrity and Solutions for Electronic Outsourcing
-----Original Message-----
From: Hernefjord Ingemar [mailto:[log in to unmask]]
Sent: Friday, November 27, 2009 2:14 AM
Subject: Re: BGAs & Conformal Coating
Juan,
I recommend you to contact, what I call Mme Flipchip, at Ericsson Telecom. She knows 'everything' about Flipchips.
If you don't know her, I can send her adress offline.
We have been using Xilinx BGAs for years, from largest superBGAs to smallest ones. We have never had any issues with the combination BGA-CC. What could be a problem?
/Inge
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Juan T. Marugán
Sent: torsdag 26 november 2009 18:53
To: [log in to unmask]
Subject: [TN] BGAs & Conformal Coating
Hi,
I've read in a Xilinx guide that: "Xilinx has no experience or reliability data on flip-chip BGA packages on board after exposure to conformal coating. It is recommended that the end-user should characterize the board level reliability performance of Xilinx packages before production use."
Does anybody know any infomation or study related with this topic?
Thank you.
Juan T. Marugán
Indra Sistemas SA
Espańa
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