Neil,
If you like to send pictures of your microsections, I would be happy to study them. In
general, copper smear can be a problem with multilayer PCBs.
Neil Atkinson wrote:
> I have some microsections of some DSPTH boards made by one of our suppliers
> which show smearing on the vertical side of the outer copper layer.
>
> Figure 3.2 of IPC6012 (page 12) shows the condition. Having read IPC-6012
> and IPC600 I am confused as to the acceptability of this. I would
> appreciate any comments or an offer from someone for me to send them
> microsection photographs by e-mail direct (I understand the TechNet
> automatically removes attachments.
>
> Thanks,
>
> Neil
>
> Neil Atkinson - Quality Manager
> Stadium Electronic Controls Division
> Stephen House, Brenda Road, Hartlepool TS25 2BQ
>
> #####################################################################################
> Attention:
>
> This message is for the named person's use only. It may contain confidential,
> proprietary or legally privileged information. No confidentiality or privilege
> is waived or lost by any mistransmission. If you receive this message in error,
> please immediately delete it and all copies of it from your system, destroy any
> hard copies of it securely and notify the sender. You must not, directly or
> indirectly, use, disclose, distribute, print, or copy any part of this message
> if you are not the intended recipient. STADIUM GROUP PLC and any of its subsidiaries
> each reserve the right to monitor all e-mail communications through its networks.
> Any views expressed in this message are those of the individual sender, except where
> the message states otherwise and the sender is authorised to state them to be the
> views of Stadium Group Plc. or one of its subsidiaries.
>
> Although this message has been scanned by MailMarshall for known viruses and
> inappropriate content, we recommend that recipients employ appropriate measures on
> their systems to intercept any such material.
>
> Thank You - Stadium Group Plc., IT Department - Tel: +44 (0)1429 266544
> #####################################################################################
>
> ---------------------------------------------------------------------------------
> Technet Mail List provided as a free service by IPC using LISTSERV 1.8d
> To unsubscribe, send a message to [log in to unmask] with following text in
> the BODY (NOT the subject field): SIGNOFF Technet
> To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL
> Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives
> Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
> information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
> ---------------------------------------------------------------------------------
--
_________________________
pratap singh
tel/fax: 512-255-6820
email: [log in to unmask]
WEB: www.rampinc.com
---------------------------------------------------------------------------------
Technet Mail List provided as a free service by IPC using LISTSERV 1.8d
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL
Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
---------------------------------------------------------------------------------
|