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Renesas' Aomori, Yamagata fabs resume limited production

Posted: 25 Mar 2011 ?? ?Print Version ?Bookmark and Share

Keywords:Renesas fab? Tsugaru wafer fab? Tsuruoka wafer fab?

After halting production at eight facilities following the powerful March 11 earthquake, Renesas Electronics Corp. has decided to resume "limited production" at two of its five affected wafer fabs.

The Tsugaru wafer fab in Aomori restarted part of its manufacturing on March 20 with "limited production capacity" while the Tsuruoka wafer fab in Yamagata resumed part of its manufacturing on March 22, also with limited production capacity, Renesas said in a status update.

The company did not indicate the nature of the productionwhether it is commercial or just test wafers at present, if it is commercial output, or at what percentage of previous manufacturing capacity the fabs are running. Rolling electricity blackouts may prevent the re-commissioning of some fabs affected by the earthquake, but intermittent power should allow engineers to begin testing and recalibrating equipment in preparation for resumption of commercial production.

Renesas also announced that a third back-end facility at Tsuruta-cho, Aomori restarted manufacturing on March 19 but only during times when there are no scheduled blackouts.

Out of the eight Renesas facilities affected by the earthquake, three wafer fabs have yet to resume some sort of operational activity.

The Naka wafer fab in Hitachinaka-shi, Ibaraki appears worst affected. So far it only has electricity for lighting while its clean room for 300mm wafer production is still being assessed for damage, Renesas said. Meanwhile, at its wafer fabs in Gunma and Yamanashi, the company plans to "begin startup procedures to restart its manufacturing after the planned blackout is terminated."

- Peter Clarke
??EE Times

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