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August 2004

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Subject:
From:
Graham Naisbitt <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Graham Naisbitt <[log in to unmask]>
Date:
Wed, 18 Aug 2004 12:10:55 +0100
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Hi Kristopher

All our customers tell us they have zero defects and no failures.

We call this "Telling Porky Pies".

I did a net search on your question and came up with one that might be
useful: http://www.allaboutcircuits.com/vol_5/chpt_8/5.html

--
Regards Graham Naisbitt

[log in to unmask]

Concoat Limited - Engineering Reliability in Electronics
A British Manufacturer

www.conformalcoating.com      www.concoat.co.uk     www.concoatsystems.com

Golf Quote of the week: If you think its hard to meet new people, try
picking up the wrong golf ball.

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> Hello,
> Could some of you share what are the most common PCB defects that escape to
> your customers?
>
>
> Thanks
>
> Kristopher J. Keating
> Circuit-Wise, Inc.
> 400 Sackett Point Rd.
> North Haven, CT 06473
> tel. (203) 281-6511 x 410
> fax (203) 287-8409
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Ingemar Hernefjord
> (KC/EMW)
> Sent: Tuesday, August 17, 2004 3:16 AM
> To: [log in to unmask]
> Subject: Re: [TN] thin film
>
> Seal Science say they have it all:
> http://www.sealscience.com/html/products/VacuumCupsPdfs/15about.pdf
> ultrahighvacuum guys use pure gold gaskets:
> http://www.sisweb.com/catalog/F39.pdf
> ourselves, we use as simple as butyl rubber:
> http://www.allstategasket.com/materials.asp (not Ultravacuum, of course)
> Butyl rubber group includes ordinary rubber used in your mountainbike tire,
> can keep vacuum or pressure for very long time.
> /Ingemar
>
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]]On Behalf Of Crepeau, Phil
> Sent: den 17 augusti 2004 02:25
> To: [log in to unmask]
> Subject: Re: [TN] thin film
>
>
> hi,
>
> i believe you should be able to use a gasket material such as viton.
>
> phil
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]]On Behalf Of Douglas O. Pauls
> Sent: Monday, August 16, 2004 2:02 PM
> To: [log in to unmask]
> Subject: [TN] thin film
>
>
> Good day all,
> I am in need of a recommendation for a thin film sealant material.  I need
> it to be 15-20 mils thick, cuttable, and preferrably non silicone.  We have
> considered the Sil-Pad technology, but as this will be used in a vacuum seal
> operation, I am concerned about silicone outgassing or cross contamination.
> Are there any thin gasket materials from the engineered rubbers that anyone
> would recommend?
>
> Doug Pauls
>
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