I also would like a copy.
Thank you,
Troy S. Wonder C.I.D.+
IPC Advanced Certified PCB Designer
General Technology Corporation
Sr. PCB Designer / Engineering Technician
1450 Mission Ave. N.E.
Albuquerque, New Mexico, 87107
Ph. (505)345-5591 Ext. 3607
Fax (505)343-7653
[log in to unmask]
-----Original Message-----
From: Jason W. Gregory [mailto:[log in to unmask]]
Sent: Wednesday, August 18, 2004 6:22 AM
To: [log in to unmask]
Subject: Re: [TN] Most common PCB failure modes
I would like a copy of this fishbone, as well. Thanks.
Jason Gregory
Mfg. Engr.
LaBarge - Houston
"Ingemar Hernefjord
(KC/EMW)" To:
[log in to unmask]
<ingemar.hernefjord@ER cc:
ICSSON.COM> Subject: Re: [TN] Most
common PCB failure modes
Sent by: TechNet
<[log in to unmask]>
08/18/2004 08:00 AM
Please respond to
TechNet E-Mail Forum;
Please respond to
"Ingemar Hernefjord
(KC/EMW)"
got a stiff 'enter' finger....Ingemar
-----Original Message-----
From: [log in to unmask] [mailto:[log in to unmask]]
Sent: den 18 augusti 2004 14:57
To: [log in to unmask]; Ingemar Hernefjord (KC/EMW)
Subject: RE: [TN] Most common PCB failure modes
Ingemar,
Perhaps I did not turn the right stone in TN, IPC, etc. I had not
since this diagram before. That is why the members of this forum is so
useful and sharing. Sharing is one of the methods to keep Lesson
Learned alive.
Victor,
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Ingemar Hernefjord
(KC/EMW)
Sent: Wednesday, August 18, 2004 7:51 AM
To: [log in to unmask]
Subject: Re: [TN] Most common PCB failure modes
Refer to what Ted Gaines said below, such magic wands...if I had them I
would sell them for a fortune each...no, Blair, the fishbone is more
like what the shaman used to do...you know what I mean...with some good
background, you'll hit quite well with them bones, and the tribe will
fall down and honour you.
I'm surprised about this fishbone popularity, thought TN, IPC, etc had
them...
Ingemar Hernefjord
Ericsson Microwave Systems
-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Blair K. Hogg
Sent: den 18 augusti 2004 14:18
To: [log in to unmask]
Subject: Re: [TN] Most common PCB failure modes
Does it have the solutions to the problems too?
>>> [log in to unmask] 08/18/04 08:14AM >>>
1st:May I point out that the fishbone diagram is not my creation.
2nd: As so many want it (surprise! Do professionals like you need such
crib?), maybe Steve can put a copy on his homestead. Watt do u zink,
Steve?
Ingemar
PS. fishbones are excellent for teaching the mysteries of SMT, you get a
knowledge platform, but they don't automatically guide you to the root
of a specific Murphy day problem.
-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Marvin Gaines
Sent: den 18 augusti 2004 13:49
To: [log in to unmask]
Subject: Re: [TN] Most common PCB failure modes
Kristopher,
My experience in this matter is that PCB manufacturing companies have
not had one common defect that can be detailed as a persistent problem
unless they have a process issue and then the defect should be able to
be traced to a date code). Usually there is a myriad of issue's that the
public never knows about. As with all manufacturing there are issue's
that come up and make it ultimately to the end customer. So to pinpoint
one common problem would be difficult.
Ted Gaines
Ht&D Cam Service
775-599-6720
-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Graham Naisbitt
Sent: Wednesday, August 18, 2004 7:11 AM
To: [log in to unmask]
Subject: Re: [TN] Most common PCB failure modes
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.
Cell: 079 6858 2121
Office: +44 (0)1252 813706
> 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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