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August 2004

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Subject:
From:
Bill Coleman <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Bill Coleman <[log in to unmask]>
Date:
Wed, 18 Aug 2004 09:14:17 -0600
Content-Type:
text/plain
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text/plain (198 lines)
Hi Ingemar

Ditto on the fish-bone diagram; appreciate if you could email me a copy.

Thanks much.

-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Kevin Jaworenko
Sent: Wednesday, August 18, 2004 8:45 AM
To: [log in to unmask]
Subject: Re: [TN] Most common PCB failure modes


I'd love to have a copy of the now fmaous fish-bone diagram as well.

Thanks Ingemar.

-----Original Message-----
From: Ingemar Hernefjord (KC/EMW) [mailto:[log in to unmask]]
Sent: August 18, 2004 1:35 AM
To: [log in to unmask]
Subject: Re: [TN] Most common PCB failure modes


Got a very useful fishbone diagram including all common problems (or rather
problem groups) in SMT. Place a copy on your desktop.
Can send you a copy offline if you want.
/Ingemar



-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Kristopher J. Keating
Sent: den 17 augusti 2004 20:17
To: [log in to unmask]
Subject: [TN] Most common PCB failure modes


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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