Product category:
Electronics Manufacturing Quality Assurance
News Release from: Blundell Production Equipment | Subject: Ersascope 2
Edited by the Electronicstalk Editorial
Team on 19 March 2004
Inspection system gets to grips with
flip chips
Ersa has upgraded its market-leading BGA inspection system.
Ersa has upgraded its market-leading BGA inspection system Over the past 3-4 years Ersa has been the undisputed market leader in visual inspection of BGA devices, with many thousands of systems being sold to date worldwide
This article was originally published on Electronicstalk on 10 Jan 2005 at 8.00am (UK)
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Optical inspection system sets industry standard
The innovative Ersascope optical inspection system is officially the world's industry standard system for visually inspecting BGAs, Micro BGAs, Flip chips etc.
During this time the new Ersascope 2 system has been under development to allow inspection into tighter, more confined areas with much smaller pitches and standoff heights.
As the first tool to be able to look under BGAs of all types, the Ersascope has proved an invaluable inspection tool for industry.
Although when it came to inspecting devices such as flip-chip devices and chip-scale packages, the top-side fillet of the solder ball was impossible to see.
The difficulty lies in the iris centre of the lens.
With the original system the iris centre is positioned at around 280um, and so seeing the largest percentage of devices was easy - even seeing the top side fillet at the BGA interface on standard BGAs.
Now the goalposts have moved.
The Ersascope 2 features a removable optical system which uses one of three lenses.
This allows the user to change between a standard BGA optical head (with dimensions similar to the original system) and a new flip chip head which not only has a footprint of 0.6 x 4mm it has an incredible iris centre set at just 12um, thus enabling users to view the top side fillet on a flip-chip device.
The third optical head is the downward looking head.
All lenses can be change in 1-2s and all systems are manufactured with a unique lens protection system rather than have annoying removable mirrors that are prone to damage, potentially causing additional costs.
Ersa has included other features in the new systems to make BGA inspection easier.
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