TECHNET Archives

April 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:
Gilbert Min <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, Gilbert Min <[log in to unmask]>
Date:
Tue, 15 Apr 2008 10:47:34 +0900
Content-Type:
text/plain
Parts/Attachments:
text/plain (50 lines)
Dear All.

Hope you had a nice weekend. 

I got a call from my customer that my PCB has non wetting problem, and  I
received 2 defect samples 

I saw the contaminated gold plated surface @ 1st sample, no abnormal surface
and defects were found @ other sample.

I understand the contaminated gold surface was able to make non wetting
problem, but Another sample, I couldn't find anything on surface. 

We did FE-SEM / EDX analysis. 

Results: 1st sample: Br, Au, C, O, Au

2nd sample C, O, Au Ion were detected 

. 

I wonder why Br was detected?, do you have any idea for defection of Br on
Gold plated surface?.

For 2nd sample, I have no idea, I could not understand the mechanism for non
wetting problem without any abnormal gold plated surface.

If have idea & possible, would you share your great wisdom to me?

 

Best Regards / Gilbert Min

 

Tel.: 82- (0) 11-9242-5340

 


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