Good Morning and Your help is appreciated to figure out what a
discoloration is under the solder mask of a bare board which does not
change after one reflow temperature cycle.

 

The Prebake and Postbake photos are in my PCB Inspection Photos Gallery
at the TechNet Group Site 
http://ipc-technet.groupsite.com/galleries?page=3

 

What is it?... Delam, or Inner Core Bond Enhance Anomaly, or something
else...?

 

Thanks for your help with this.

 

John Balchunas

Supplier Quality Engineer

Email: [log in to unmask] <mailto:[log in to unmask]> 

Tel: 763-278-2249

Fax: 763-767-4635

 

 


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

---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 16.0
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
For additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
-----------------------------------------------------