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July 2008

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Subject:
From:
Ted Tontis <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Ted Tontis <[log in to unmask]>
Date:
Fri, 18 Jul 2008 13:31:19 -0500
Content-Type:
text/plain
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text/plain (73 lines)
When coating sockets for programmable components I have always taped off the
socket prior to coating or have kept a respectful distance away from it.
Coating can work it's way between the leads of the component and socket
interfering with electrical conductivity. Scraping off the leads on the
socket and component or trying to remove the socket and repair the coating
after rework is a real pain. 
Just curious, if you need to coat the EEPROM what is the need for the
socket? If you were to coat over the socket and EEPROM it would be very
difficult to remove the EEPROM after coating.

Ted T. 

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Wilson, Bob
Sent: Friday, July 18, 2008 12:48 PM
To: [log in to unmask]
Subject: [TN] conformal coating

Hi!

We're having a discussion  about conformal coating.

Does anyone have any data about acrylic coating of an EEPROM after the
programmed chip is placed in the socket?

Does the coating cause any problems?  Is it a standard practice to mask
the socket, coat the board, install the chip and then coat over the
chip?

Thanks a bunch.

And happy Friday!!

Oil prices have fallen lately.  We include this news for the benefit of
gas stations, which otherwise wouldn't learn of it for six months.  
~William D. Tammeus

Bob Wilson
E/M Designer, CID+
SpectraSensors, Inc.
11027 Arrow Route
Rancho Cucamonga, CA 91730
(909) 948-4110
www.spectrasensors.com
www.ipc.org
 



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