TECHNET Archives

January 2010

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:
stephengregory5849 <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, stephengregory5849 <[log in to unmask]>
Date:
Fri, 22 Jan 2010 21:23:22 -0500
Content-Type:
text/plain
Parts/Attachments:
text/plain (104 lines)
You will have a "Fish-eye" effect with a lot of x-ray machines. Meaning that 
when you are viewing the whole image, the image of the balls in the center 
of the screen will appear to be a different diameter than the balls at the 
edges of the screen. You should only concentrate on what you see at the 
center of the screen, and manipulate and move the BGA around so that you can 
see all the balls in the center of the screen.

Steve

----- Original Message ----- 
From: "Paul Edwards" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, January 22, 2010 8:59 PM
Subject: Re: [TN] X-Ray Inspection


Are you x-raying a BGA with a metal lid?

Paul

Paul Edwards
Surface Art Engineering

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Ashok Dhawan
Sent: Friday, January 22, 2010 11:22 AM
To: [log in to unmask]
Subject: Re: [TN] X-Ray Inspection

Bob

We are currently doing XRAY Inspection of BGAs. The XRAY TestEngineer
noticed that solder ball size on outer rows is different from the ball size
on inner core areas.
"We are still seeing a bi-modal data distribution of ball volume between the
middle and periphery balls? Is that normal for BGAs. "

I would appreciate your expert comments as there is not much XRAY related
information on web.

Regards

Ashok Dhawan
Manuf. Specialist
Parker hannifin Electronic Controls
Winnipeg Canada
[log in to unmask]

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


 =============================================================================

This email and any attachments thereto may contain private, confidential, 
and
privileged material for the sole use of the intended recipient. Any review, 
copying,
or distribution of this email (or any attachments thereto) by others is 
strictly prohibited.
If you are not the intended recipient, please contact 
[log in to unmask]
immediately and permanently delete the original and any copies of this email 
and
any attachments thereto.

 =============================================================================


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

ATOM RSS1 RSS2