Werner

As I understand it, IST and T-cycling give similar but not necessarily
identical results that prohibit making such statements as X IST cycles is
equivalent to Y T-cycles.  Is that right?

My question is how certain are we of the correlation between either method
and actual board performance.

Mike McMaster
RF Product Engineer
Merix Corporation
503-992-4263



> ----------
> From:         Werner Engelmaier[SMTP:[log in to unmask]]
> Reply To:     TechNet E-Mail Forum.;[log in to unmask]
> Sent:         Thursday, July 10, 2003 5:50 PM
> To:   [log in to unmask]
> Subject:      Re: [TN] Interconnect Stress Testing
>
> Hi Paul & Valerie,
> IST has been qualitatively correlated to the results of T-cycling,
> however,a
> quantitative correlation is still lacking. By no means has IST "been
> thorougly
> modeled and been benchmarked to other standard stress tests." The
> necessary
> work to obtain the needed data has simply not been done. One effort
> published
> turned out to have data that clearly were incorrect.
>
> Regards,
> Werner Engelmaier, Chairman, IPC Reliability Committee
>
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