Was this question ever answered? I am also interested in how to interpret
HATS testing results.





From:
Dwight Mattix <[log in to unmask]>
To:
[log in to unmask]
Date:
05/21/2010 10:18 AM
Subject:
Re: [TN] Pass Fail criteria for HATS tests
Sent by:
TechNet <[log in to unmask]>



I admit we tend to set an arbitrary limit and call it all good if
that is exceeded.  That's just for sake of expediency
though.  Sometimes we have to get into the stickier details
though.  For example when a particularly challenging product rqmt (or
a pwb technology that is emerging or marginally reliable) needs some
real reliability engineering thought applied.  That's when the AT&T
Reliability Manual gets dusted off and Mr Weibull with his log paper
gets called back into service.


At 05:39 AM 5/21/2010, Werner Engelmaier wrote:
>  Just found this e-mail. Did you ever get an answer?
>Werner
>
>
>
>
>
>
>
>
>-----Original Message-----
>From: Zilber Gil <[log in to unmask]>
>To: [log in to unmask]
>Sent: Thu, Feb 25, 2010 10:12 am
>Subject: [TN] Pass Fail criteria for HATS tests
>
>
>Hello Tech,
>
>We performed HATS test on some PCB`s vendors using a few PCB
>technologies. Will it be reasonable to define Pass/Fail criteria for
>Avionic systems as  10%/500 cycles after 6 eutectic solder simulations
>using -40 to 145C? What are the criteria's you are using? Is it a tough
>demands or should most PCB class 3 pass it?
>
>Thanks,
>
>Gil Zilber
>Elta Systems
>
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