Flip-Chip Package Substrate Solder Issue

My Xilinx distributor shipped an affected lot to us and we are now in a line-down situation. We've been told that lead-time is 10 weeks. I'm looking for 50 XC2V6000-4BF957C from an unaffected lot. Thanks.

Reply to
Emile
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Emile,

Just so you have the facts, we have 100 2V6000's from the affected lot, that are at 12 upsets in 44,496 device hours of operation. It takes from 6 to 40 flips to cause a functional fail (on average over many customer designs). Assuming 10 flips on average, that makes the mean time to fail 4.2 years (approx). Could be half that on average, to more than four times that, on average.

Aust> My Xilinx distributor shipped an affected lot to us and we are now in

Reply to
Austin Lesea

So, if the product in question is not operating 24/7 (powered on/off on a daily basis or when it gets used) the failure in question is as good as non-existent?

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Martin Euredjian
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Reply to
Martin Euredjian

Martin,

Excellent point. If the unit is reconfigured (doesn't even have to be powered off) it does not change the probability, but it will prevent upsets from acumulating bit flips (lessening probability of functional fail), as well as lessening the time of the outage, or the probability that an outage is even noticed.

Austin

Mart>

Reply to
Austin Lesea

Thanks for your help Guys,

With your help, our franchise supplier has agreed to accept the devices in return for credit. We were also fortunate enough to find an independant supplier with unaffected Lot Numbers. Thanks again.

-Emile

Reply to
Emile

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