Likely cost of ownership over 5 years.
That time scale is long enough to reveal the possibility of the
replacement of some expensive items.
Rex
Rex Waygood
Technical Manager
Hansatech EMS provides value manufacturing through engineering and
quality
Hansatech EMS Limited
Benson Road
Nuffield Industrial Estate
Poole
Dorset BH17 0RY
United Kingdom
Tel: +44 (0)1202 338200
Fax: +44 (0)1202 338202
DDI: +44 (0)1202 338222
[log in to unmask]
www.HansatechEMS.com
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Lum Wee Mei
Sent: 23 January 2010 03:40
To: [log in to unmask]
Subject: Re: [TN] X-Ray Inspection
What are the requirements I should look for when I want to purchase an
X-ray machine?
Thanks and Regards,
~ Wee Mei ~
_____
From: TechNet on behalf of stephengregory5849
Sent: Sat 1/23/2010 10:23 AM
To: [log in to unmask]
Subject: Re: [TN] X-Ray Inspection
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
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