John
 
Here is an example where the spacing to the edge contacts, that do not get beveled, are only 0.007" from the board edge and there was haloing that measured about 0.004" in depth and the customer wanted to reject the product based on the IPC criteria.  I think the new language contradicts itself by stating "50% of the distance from the edge to the nearest conductor" and then "The distance between the haloing penetration and the nearest conductive feature shall not be less than the minimum lateral conductor spacing".  This design specified a minimum spacing of 0.005" and the haloing was within about 0.003".  This product would still be rejectable.
 

 
Thanks,
 
Scott A. Bowles
Director of Engineering and Quality
Hallmark Circuits, Inc.
13500 Danielson Street
Poway, CA 92064
 
858 513-2200 Office x8848
858 513-2233 Fax
858 437-7827 Cell
 
 
Notice:  This e-mail is intended solely for use of the individual or entity to which it is addressed and may contain information that is proprietary, privileged and exempt from disclosure under applicable law. If the reader is not the intended recipient or agent responsible for delivering the message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. This communication may also contain data subject to U.S. export laws. If so, that data subject to the International Traffic in Arms Regulation cannot be disseminated, distributed or copied to foreign nationals, residing in the U.S. or abroad, absent the express prior approval of the U.S. Department of State. If you have received this communication in error, please notify the sender by reply e-mail and destroy the e-mail message and any physical copies made of the communication. Thank you. 
 
 

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