Terry,
And who said you had become listless lately? Good to hear from you. I
agree with your additions. I touched on them at a higher level, but if I
added more to my initial list the residual effect would be to add more
Deweyisms.
Dewey

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Terry L. Munson
Sent: Monday, October 29, 2007 2:34 PM
To: [log in to unmask]
Subject: Re: [TN] cleaning concerns

Dewey

I would also add to that list 
 
* Circuit Sensitivity
 
* Component Geometries (where are the entrapment opportunities)
 
* specialized components such as QFN or PQFN packages
 
* cleaning pressures (low pressure with a saponifier is much more
effective  
than high pressure with water)
 
* cleanliness measurement total board vs. localized area
 
* Base surface finish (silver is more susceptible than ENIG)
 
* Soldermask porosity (some masks have a greater level of porosity and  
therefore hold more residue requiring a greater cleaning energy)
 
 
Terry Munson
Foresite Inc.  
 
765-457-8095
 
 



************************************** See what's new at
http://www.aol.com

---------------------------------------------------
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
-----------------------------------------------------

---------------------------------------------------
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
-----------------------------------------------------