Phil,

we had a look at them very early when Big Blue introduced them, and they had
indeed some interesting properties, but, to make a long story short, they
were too expensive. Our two primary objectivs were resistance against
extreme temperature change and also a very high heat dissipation capability.
However, both these are well met with ordinary BGAS. Additionally, the
semiconductor designers have been better on doing a lot with low power
consumption.

Inge

PS If I remember correctly, flux removal was a problem.

On 10 March 2011 19:23, Phil Bavaro <[log in to unmask]> wrote:

> Are there a lot of Technet folks using Ceramic Column Grid Arrays?
>
>
>
> Somehow I have managed to dodge that bullet until now.  In the telecom
> arena, my impression was it was better to keep my designs limited to
> BGAs but I suspect that things might have changed now that I am dealing
> with hi-rel designs.
>
>
>
> Any advice is appreciated.
>
>
>
> Phil
>
>
>
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