None exists.  Nail heading is no longer a defect in IPC and as long as
the plating characteristics meet the conditions of the standard,
roughness is acceptable.  From a user perspective, drill roughness is an
indication of a process issue and should be addressed as possible
defects may not be detected by the small sampling that is done by
microsection analysis.  Proper control of drill tools, number of hits,
stack height, spindle parameters, etc, will produce a quality drill
hole.    

Jeffrey Bush
Director, Quality Assurance and Technical Support

VERMONT CIRCUITS INCORPORATED
  76 Technology Drive - POB 1890
    Brattleboro, Vermont 05302
      Voice: 802.257.4571.21 Fax: 802.257.0011
           http://www.vtcircuits.com
 
-----Original Message-----
From: Parial Swati [mailto:[log in to unmask]] 
Sent: Saturday, November 20, 2004 1:36 AM
To: [log in to unmask]
Subject: [TN] Specifications for Drilled hole roughness as per IPC

Dear friends,
What is the specification for drilled hole roughness and nail heading as
per IPC ?
What is the reference document number and where is it available ?

This information will be very helpful for us.
Regards,
Swati...


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Technet Mail List provided as a service by IPC using LISTSERV 1.8e
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 or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
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