On October 28, 2009, Microsemi Corporation (the "Company") announced consolidation plans that will result in the closure of its manufacturing facility in Scottsdale, Arizona by April 2011. In the fourth quarter of fiscal year 2009, the Company expects to record one-time charges for restructuring and other reserves of between $24 million and $26 million. Additional consolidation costs of $3 million may be incurred over the closure period. The Company expects that after the consolidation activities are completed, annual savings benefiting operating income will range from $20 million to $25 million.

The full text of the Company's press release announcing the consolidation plans is furnished as Exhibit 99.1 to this report and is incorporated herein by this reference.

(d) Exhibits.

          Exhibit
          Number    Description
          99.1      Press release of the Company dated October 28, 2009