Reuven and all,
HASS is not a good tool for finding Solder Joint Failure. However, Dell,
Airbus, Thales, GM, Cisco, McData, L-3, Boeing and many others, including
several branches of the US and Canadian military, feel that HASS is a very
effective screening tool, if used correctly. HASS does not make a lousy
screening procedure. A word of caution, the terms HALT and HASS have been
widely interpreted by many companies and this has lead to misunderstandings
and poor results.
Clayton Bonn
Reliability Resources
e-mail:[log in to unmask]
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Werner Engelmaier
Sent: Friday, March 16, 2007 1:04 PM
To: [log in to unmask]
Subject: Re: [TN] SMT Solder Joint Strength
Hi Reuven,
You certainly would not want to do 'HASS' on product to be shipped. Saying "
after all the visual and X Ray inspections" implies product. HASS makes for
a lousy screening procedure.
The tests I recommend depend on what you try to accomplish--HASS is not
among them.
Werner
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