Pls read Werner Engelmeier white paper for PCBs spec.


On Tue, Dec 10, 2013 at 8:50 PM, Stadem, Richard D. <
[log in to unmask]> wrote:

> I don't think that PWBs actually have MSD levels assigned to them in any
> IPC standard, like components do with J-STD-033.
> However, they SHOULD be treated as MSDs, because they are. Proper
> handling, packaging and storage methods are outlined within IPC-1601. Buy a
> copy today, no self-respecting CEM or OEM should be without it.
> Most CEM/OEM houses have a PWB procurement document that is used to flow
> down specific requirements to their fabricators that may include exceptions
> to the general requirements listed in IPC 6012, IPC 2221, IPC 2222, etc.
> That document is the appropriate place to outline what you require for PWB
> handling.
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of MaryJane Chism
> Sent: Tuesday, December 10, 2013 11:21 AM
> To: [log in to unmask]
> Subject: [TN] Moisture Level Determination of PCB
>
> Hi Group,
>
> I have a question concerning the moisture level of a printed circuit board.
>
> 1) Does a printed circuit board have an MSL level? We have been treating
> the printed circuit as an MSL Level 3.
> 2) Should we consider the wave solder as a thermal event even though the
> wave carriers shield all areas of the printed circuit board except the
> specific through hole areas. We currently do but should we?
>
> Any information you give will be helpful,
>
> Thanks,
>
> Mary Jane
>
> ______________________________________________________________________
> This email has been scanned by the Symantec Email Security.cloud service.
> For more information please contact helpdesk at x2960 or [log in to unmask]
>
> ______________________________________________________________________
> This email has been scanned by the Symantec Email Security.cloud service.
> For more information please contact helpdesk at x2960 or [log in to unmask]
> ______________________________________________________________________
>



-- 

Best Regards,

*Reuven Rokah*

Mobile: 972-52-6012018
Tel:        972-3-9360688
Fax:          076-5100674
 <http://www.rokah-technologies.com/>[log in to unmask]
[log in to unmask]
www.rokah-technologies.com


This e-mail message is intended for the recipient only and contains
information which is CONFIDENTIAL and which may be proprietary of Rokah
Technologies. If you have received this transmission in error, please
inform me by e-mail, phone or fax, and then please delete all of the
original files and all other copies exist.


______________________________________________________________________
This email has been scanned by the Symantec Email Security.cloud service.
For more information please contact helpdesk at x2960 or [log in to unmask] 
______________________________________________________________________