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1Scan for outdated or missing drivers - takes under a minute2Repair Windows errors before they cause bigger problems3Fix the driver behind crashes, sound loss and screen glitchesOn December 18, 2001, Toshiba announced that it would leave the commodity DRAM business and sell the DRAM assets of its Dominion Semiconductor subsidiary in Manassas, Virginia, to Micron Technology. This was not an exit from memory or semiconductors altogether: Toshiba redirected resources toward NAND flash, embedded and application-specific memory, and other higher-value products. Micron completed the acquisition on April 22, 2002.
What Toshiba actually exited
The announcement concerned commodity DRAM production and sales—the standardized memory chips whose prices and margins were being driven by global supply and demand. It did not mean Toshiba abandoned every DRAM product or its wider memory business.
Toshiba said it would continue concentrating on NAND flash, application-specific memories, embedded DRAM and selected higher-value memory activities. It also retained its arrangement involving Rambus DRAM for Sony PlayStation systems and its ferroelectric-RAM collaboration with Infineon. The accurate description is therefore “Toshiba exits commodity DRAM,” not “Toshiba exits memory.”
The decision formed part of Toshiba’s semiconductor restructuring under its “01 Action Plan.”
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Why commodity DRAM had become unattractive
The sale came during one of the industry’s sharpest downturns. Oversupply pushed prices down while DRAM manufacturing required heavy, continuing capital investment. Contemporary EE Times reporting said the price of a standard 128-megabit DRAM had fallen by more than 90% during 2001 and remained below manufacturing cost even after a partial recovery.
That combination made scale increasingly important. A manufacturer had to operate expensive fabs at high utilization, keep moving to smaller process geometries and tolerate severe price cycles. Toshiba’s strategic alternatives were to keep funding a loss-making commodity operation or move capital toward segments where product differentiation and customer relationships offered better returns. It chose the latter.
IDC data cited by EE Times put Toshiba at about 4.8% of the DRAM market by volume in the period, ranking it sixth. That made Toshiba meaningful but smaller than the largest suppliers, so the transaction’s immediate supply effect was limited. Its larger significance was strategic: another established producer was leaving a business increasingly dominated by scale.
What Dominion Semiconductor was
Dominion Semiconductor was Toshiba’s wholly owned Manassas, Virginia subsidiary. The facility originated as a Toshiba–IBM joint venture, began full-scale wafer production in 1997 and became wholly Toshiba-owned after Toshiba acquired IBM’s interest in 2000.
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At the time of the announcement, contemporary reporting described a four-year-old fab using 0.17-micron trench technology and producing approximately 20,000 eight-inch wafers per month. Those are period figures, not specifications for the modern site.
What Micron bought—and what it did not
The shorthand “Micron bought Toshiba’s fab” is broadly right, but the transaction was more specific. Micron acquired substantially all of Toshiba’s DRAM operations conducted through Dominion, including the Manassas operation’s land, buildings, manufacturing equipment and related commodity-DRAM business.
Toshiba’s separate NAND activity was not part of the same transfer. FlashVision, the Toshiba–SanDisk joint venture associated with NAND production at the location, was to move its NAND manufacturing equipment to Toshiba’s Yokkaichi operations in Japan. That carve-out is why the deal should not be described as a sale of everything Toshiba did at Manassas.
Announcement and closing were different events
| Date | Event |
|---|---|
| December 18, 2001 | Toshiba and Micron announced a memorandum of understanding covering Dominion’s DRAM assets and Toshiba’s commodity-DRAM exit. |
| January 2002 | The parties initially targeted completion by the end of January, subject to transaction conditions. |
| April 22, 2002 | Micron completed the acquisition. |
| 2002 | Micron planned to transfer its 0.13-micron process technology into the Manassas facility. |
The April closing date is documented in Micron’s investor disclosures. It should not be replaced by the January target date reported when the memorandum was announced.
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Price and transaction consideration
The announcement did not disclose a purchase price. Micron’s later disclosures identified two components:
- $250 million in cash.
- 1.5 million Micron common shares.
Micron’s accounting disclosure reported an approximate total purchase price of $327.9 million, commonly rounded to $328 million. Thus, saying the deal “cost $250 million” describes only the cash component, not the full consideration.
Sources for the consideration and closing include Micron’s completion disclosure, its original transaction filing and the company’s SEC filing.
Employment consequences at Manassas
Workforce numbers changed as the transaction progressed and were reported using different dates and definitions:
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| Source or point in time | Reported workforce information |
|---|---|
| Announcement coverage | Approximately 1,400 manufacturing workers; about 600 positions could be eliminated as an initial estimate. |
| February 2002 report | The Washington Post reported 280 layoffs and about 1,100 employees remaining. |
| Micron SEC filing | Approximately 1,000 employees at the acquired facility. |
These figures should not be combined into a single job-loss number. They reflect different stages of the deal and may include different treatment of contractors, vendors and other personnel.
What Micron gained
Micron obtained an operating U.S. DRAM fab rather than having to build a greenfield facility. The acquisition provided:
- Existing buildings, equipment and trained personnel.
- Additional wafer capacity during an industry consolidation cycle.
- A site into which Micron could transfer its own 0.13-micron process technology.
- Potential continuity for customers and production.
- An opportunity to apply Micron’s manufacturing model and reduce cost per wafer.
Micron’s stated rationale was not simply to acquire Toshiba’s product line. It was to use an operating site and migrate Micron technology into it, improving the economics of the combined manufacturing base. Contemporary coverage is available from EE Times.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What happened to the Manassas site later
The Manassas facility continued under Micron rather than closing after Toshiba’s withdrawal. Micron’s current description says the Virginia location now specializes in 300mm NAND, DRAM and NOR memory for automotive, defense, aerospace, industrial, networking and related markets. Micron says the site supports more than 3,100 direct manufacturing and community jobs and is undergoing substantial expansion and modernization; those are current company claims, not measurements of the 2001 operation.
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Micron’s current Virginia facility page therefore provides a useful epilogue, but it should not blur the original transaction. The 2001–2002 deal involved Toshiba’s commodity-DRAM operation, while the successor site now has a broader product mix, different process technology and a much larger stated employment footprint.
Why the transaction mattered
The deal illustrated how the early-2000s DRAM downturn accelerated consolidation. Toshiba was reallocating capital away from a commoditized, loss-making segment; Micron was adding an operating fab and seeking greater manufacturing scale. The evidence supports that broader industry interpretation, not a claim that this single transaction caused a particular DRAM shortage or price increase.
Micron’s timeline records the 2002 acquisition of Toshiba’s Dominion commodity-DRAM operations: Micron company timeline. Toshiba’s original announcement and strategic explanation are in its December 18, 2001 release and joint statement.
The Bottom Line
Toshiba’s 2001 decision was a targeted exit from commodity DRAM, not a retreat from memory. Micron completed the purchase of Dominion’s DRAM business on April 22, 2002, paying $250 million in cash plus 1.5 million shares—approximately $328 million in accounting purchase price—and turned the Manassas site into a continuing, broader U.S. memory operation.
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