TECHNET Archives

July 2008

TechNet@IPC.ORG

Options: Use Monospaced Font
Show Text Part by Default
Show All Mail Headers

Message: [<< First] [< Prev] [Next >] [Last >>]
Topic: [<< First] [< Prev] [Next >] [Last >>]
Author: [<< First] [< Prev] [Next >] [Last >>]

Print Reply
Subject:
From:
Werner Engelmaier /* <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, [log in to unmask]
Date:
Mon, 7 Jul 2008 19:08:49 EDT
Content-Type:
text/plain
Parts/Attachments:
text/plain (42 lines)
Hi KennyB,
Why do you care? What difference does it make on a PCB, and even more so on 
flex? Why inspect for irrelevant comformance? The drilled hole diameter for 
PCBs has significance in terms of how small I can make the internal connecting 
lands, without causing breakout under acceptable tolerances. It has 
significance, because it is more difficult to plate good Cu into smaller diameter holes; 
it has significance because the reliability and survivability in the soldering 
process depends on the drilled hole diameter.

Werner
Future workshops:
Pb-Free Soldering Processes—Survival, Quality, Reliability, July 17/18, Thal, 
Switzerland
Pb-Free Soldering Processes—Survival, Quality, Reliability, July 21/22, Bad 
Segeberg, Germany
Pb-Free Soldering Processes—Survival, Quality, Reliability, August 18, 
Orlando
Reliability Issues with Lead-Free Soldering Processes, September 22, 
Schaumburg
Failure Mode and Root Cause Analyses Reliability (Fatigue, Brittle Fracture, 
ENIG), September 22, Schaumburg
Solder Joint Reliability: Parts 1 & 4, Oct. 9, Moscow, Russia
Solder Joint Reliability: Parts 1 & 4, Oct. 17, Timisoara, Rumania
Solder Joint Reliability: Parts 1 & 4, Oct. 22, Tallinn, Estonia



**************
Gas prices getting you down? Search AOL Autos for 
fuel-efficient used cars.
      (http://autos.aol.com/used?ncid=aolaut00050000000007)

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
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
-----------------------------------------------------

ATOM RSS1 RSS2