Werner,

Would love to have a copy of the white paper.  My designer is a  
contractor in Brasil.  He's an expert at PCAD and it's subsequent  
incarnations  , the latest being Altium.  His fab notes aren't the  
greatest so I'd like to see how we can improve them since we have to  
make sure they use Sn/Pb procedures as we refuse to go lead-free.

Bob

Sent from my iPhone

On Apr 13, 2010, at 12:51 PM, Werner Engelmaier <[log in to unmask]>  
wrote:

> Peter, Greg & All,
> It is precisely for these reasons that I developed the White Paper  
> "Recommendationsfor PCB FAB Notes and Specifications in Printed  
> Circuit Board Drawings for SnPband Lead-Free Soldering Assemblies,  
> the Qualification of PCB Shops andActivities to Assure Continued  
> Quality."
> The OEMs no longer have any in-house expertise precisely at the time  
> the need it the most because of the demands of Pb-free assembly.  
> When sh.. hits the fan, as it invariably will, they blame the Fab  
> house the assembly house or both, when it is inadequately spec'ed  
> PCBs made according to an inadequate specification, against which  
> the FAB houses bid, that is the root cause of the problems.
> Werner
>
>
>
> -----Original Message-----
> From: Gregg Owens <[log in to unmask]>
> To: [log in to unmask]
> Sent: Tue, Apr 13, 2010 12:00 pm
> Subject: Re: [TN] Contract PCB Design Services T&C
>
>
> Pete:
>
> Your "rant" could easily be extended to every area of PCBA  
> manufacturing. The
> rise of PCBA assemblies houses in the 1980s are examples of how  
> management has
> tried to save upfront costs only to pay more in the end with longer  
> lead times.
> This is not to say assembly houses are "bad" but it transferred the  
> electronics
> manufacturing process away from the very people who would be  
> installing and
> using the PCBAs - the end users. This business model has created  
> lots more
> finger pointing between end users and the board and assembly houses  
> because the
> end users no longer retain the experience necessary to clearly  
> determine whether
> the root cause of a problem is design or process related. Then this  
> century
> throw in lead-free and you end up with lots of folks working very  
> hard in this
> industry but with all too great ignorance of the materials and  
> processes they
> are using, all the while trying to keep quarterly profits in a  
> positive
> position. I will now get off my soap box.
>
> Gregg Owens
> Technical Writer - Avionics
> Space Exploration Technologies Corporation
> (310) 363-6533
>
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Pete Houwen
> Sent: Tuesday, April 13, 2010 7:19 AM
> To: [log in to unmask]
> Subject: Re: [TN] Contract PCB Design Services T&C
>
> Bob, I'm in a rather similar situation.  A company of 3000+, R&D  
> locations on 3
> continents and 2 islands.  I am the sole remaining PCB designer.
>
> To answer your questions first:
>
> 1.  We have a set of company specific design standards, mostly to  
> make sure
> the data we receive is compatible with MRP and CAM standards, and it  
> makes
> it easier for me to pick up the "finished" job and, well, finish  
> it.  But we
> don't
> keep a standard agreement, as the services we require change based  
> on the
> design.
>
> 2. If a company can not deliver what we have asked for, either  
> during or at
> the end, they don't get paid.  In a situation such as yours, a mutual
> agreement to terminate the effort, we would pay them for the part of  
> the
> work we can use, whatever did meet parts of the agreement.  This has
> happened before.
>
> now the rant:
>
> We laid off all the designers but me.  We send the work to China,  
> using
> engineers with no PCB experience whatsoever, to do design and
> documentation.  Their cost is 1/3 of ours.  It takes them 3x as long  
> to deliver
> a design.  Between the time I spend getting them started and  
> correcting
> after, I spend 1.5x what it would take to do the design myself.  To  
> Sr.
> management, this is cost savings.  Lately, we have been contacting  
> one of
> the designers we laid off.  We pay him almost what it cost when he was
> employed here.  And again, add in my time, so we're about even now.   
> That
> works well, except that he has another full time job, so turn time  
> is longer.
> And since I am stretched so thin, there have been errors - costly  
> errors, and
> reduced manufacturability.
>
> Here's hoping the new "Undercover Boss" TV series starts opening  
> some eyes.
>
> Pete
>
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