Top Silicon Wafer Manufacturers and Suppliers in 2026
Averroes
Oct 22, 2026
The largest silicon wafer manufacturers are Shin-Etsu Chemical (through Shin-Etsu Handotai), SUMCO, GlobalWafers, Siltronic and SK Siltron. Together these five hold over 80% of the 300 mm wafer market. Below them are specialty manufacturers such as Soitec for SOI wafers and Okmetic for MEMS and power wafers, and distributors such as SVM and UniversityWafer, which sell prime and test wafers in small quantities.
This guide covers semiconductor-grade wafers only, not solar wafers. It comes from Averroes.ai, an AI visual inspection platform used at wafer inspection gates, and sits within the wafer manufacturing stage of the semiconductor lifecycle.
Key Notes
Five companies hold over 80% of the 300 mm wafer market: Shin-Etsu, SUMCO, GlobalWafers, Siltronic and SK Siltron.
Worldwide shipments reached 3,573 million square inches in Q2 2026, up 7.4% year on year, according to SEMI.
Manufacturers grow crystals and finish wafers; distributors resell them in small lots, often with added services such as films, dicing or reclaim.
The only US site producing advanced 300 mm raw wafers is GlobalWafers’ plant in Sherman, Texas.
The Silicon Wafer Market in 2026
The silicon wafer market is a concentrated supply chain in which a handful of manufacturers grow single-crystal silicon and sell polished, epitaxial and SOI wafers to chipmakers. Five companies hold over 80% of the 300 mm market, according to the US Commerce Department, and most supply comes from East Asia.
Demand is rising again. Worldwide wafer shipments reached 3,573 million square inches (MSI) in Q2 2026, up 7.4% from 3,327 MSI a year earlier and 9.1% above Q1 2026, according to the SEMI Silicon Manufacturers Group. SEMI attributes the growth to AI-related demand that now extends beyond advanced logic and memory into power devices and photonics. The recovery follows a soft 2024, when shipments fell 2.7% to 12,266 MSI and wafer revenue fell to $11.5 billion.
Two shifts define the 2026 supply picture:
Customers are funding capacity. Wafer suppliers protected margins through the downcycle rather than add capacity. In July 2026, Micron agreed to provide $500 million in financing to GlobalWafers’ Texas plant in exchange for a 10-year supply agreement.
Production is consolidating on 300 mm. SUMCO is ending 200 mm production at its Miyazaki site, and Siltronic finished phasing out wafers up to 150 mm at Burghausen in 2025.
Silicon wafer suppliers fall into three tiers. Major manufacturers grow crystals and supply 300 mm wafers at volume. Specialty manufacturers focus on SOI, MEMS, RF or power wafers. Distributors resell wafers from manufacturers in smaller lots.
Largest silicon wafer manufacturers compared
Company
Headquarters
Tier
Wafer Types
Best Known For
Shin-Etsu Chemical (Shin-Etsu Handotai)
Tokyo, Japan
Major
Polished, epitaxial, SOI
Largest wafer supplier by revenue
SUMCO
Tokyo, Japan
Major
Polished, annealed, epitaxial, SOI, reclaimed
Dedicated wafer maker focused on 300 mm
GlobalWafers
Hsinchu, Taiwan
Major
Polished, annealed, epitaxial, SOI, diffused
Plants in Asia, Europe and the US, including the only advanced 300 mm plant in the US
Siltronic
Munich, Germany
Major
Polished, epitaxial
New 300 mm fab in Singapore
SK Siltron
Gumi, South Korea
Major
Polished, epitaxial; SiC through a US subsidiary
Korea’s only dedicated wafer maker
Soitec
Bernin, France
Specialty
SOI, including RF-SOI and FD-SOI
Smart Cut SOI technology
Okmetic
Vantaa, Finland
Specialty
Polished, SOI, high-resistivity RF, MEMS
Custom wafers for MEMS, sensors, RF and power
Wafer Works
Taoyuan, Taiwan
Specialty
Polished (single and double side), epitaxial, SOI, GaN epitaxial
Heavily and lightly doped specialty wafers
How we ranked the major manufacturers: by each company’s latest reported revenue from its own filings or results. Report-vendor market share estimates were not used, because published figures conflict.
Company
Latest Reported Revenue
Approx. US$
Shin-Etsu Chemical
Not reported separately for wafers
n/a
SUMCO
¥409.6 billion (2025)
2.7 billion
GlobalWafers
NT$60.6 billion (2025)
1.9 billion
Siltronic
€1,347 million (2025)
1.5 billion
SK Siltron
About ₩2 trillion (2025)
1.4 billion
US dollar values are approximate, at average 2025 exchange rates. Siltronic and SK Siltron are close enough that currency moves can swap their order. Rankings also differ by metric: SK Siltron is reported to rank third worldwide by 300 mm market share, while GlobalWafers ranks third by total revenue.
The Five Major Semiconductor Wafer Manufacturers
These five semiconductor wafer manufacturers supply most of the world’s 300 mm wafers. Each profile covers the same points: what the company makes, where it produces, and its most significant recent development.
1. Shin-Etsu Chemical (Shin-Etsu Handotai)
Shin-Etsu Chemical is a Tokyo-based materials group whose wafer business, Shin-Etsu Handotai (SEH), is widely reported as the world’s largest silicon wafer supplier by revenue. Shin-Etsu does not report wafer revenue on its own. Semiconductor silicon sits inside its Electronic Materials segment, next to products such as photoresists and rare earth magnets.
Wafer types: polished, epitaxial and SOI wafers up to 300 mm. Shin-Etsu holds a license to Soitec’s SOI technology.
Customers: advanced logic and memory makers buying 300 mm wafers.
Recent development: in 2024, Shin-Etsu moved to make Mimasu Semiconductor Industry a wholly owned subsidiary, adding wafer processing and reclaim capacity.
2. SUMCO
SUMCO is a Tokyo-based dedicated silicon wafer manufacturer, formerly Sumitomo Mitsubishi Silicon, and the second largest supplier by revenue. It reported 2025 net sales of ¥409.6 billion, and operating profit of ¥1.3 billion, well below its 2024 result.
Wafer types: monocrystalline ingots plus polished, annealed, epitaxial, SOI and reclaimed wafers.
Customers: logic and memory makers, with 300 mm demand from AI servers named as its growth priority.
Recent development: SUMCO is ending 200 mm production at its Miyazaki site while holding back new 300 mm expansion.
3. GlobalWafers
GlobalWafers is a Hsinchu, Taiwan-based wafer manufacturer and part of the Sino-American Silicon Products group, ranked third by revenue. It reported 2025 revenue of NT$60.6 billion. Less than 30% of its capacity and revenue sits in Taiwan.
Wafer types: polished, annealed, diffused, epitaxial and SOI wafers. It also holds a Soitec SOI license.
Production: Asia, Europe (including Denmark and a new plant in Italy opened in October 2025) and the US (Sherman, Texas, and St. Peters, Missouri). It acquired SunEdison Semiconductor, formerly MEMC, in 2016.
Recent development: in July 2026, Micron agreed to provide $500 million in financing for the Sherman plant, tied to a 10-year supply agreement, subject to definitive agreements.
4. Siltronic
Siltronic is a Munich-based silicon wafer manufacturer supplying polished and epitaxial wafers to logic, memory and power chipmakers. It reported 2025 sales of €1,347 million, down 4.7% year on year, with an EBITDA margin of 23.5%. GlobalWafers holds a stake in the company.
Wafer types: polished and epitaxial wafers, now concentrated on 200 mm and 300 mm.
Production: Germany and Singapore. Siltronic completed the phase-out of wafers up to 150 mm at Burghausen in 2025.
Recent development: its new 300 mm fab in Singapore completed key customer qualifications and began depreciation in August 2025.
5. SK Siltron
SK Siltron is a Gumi, South Korea-based silicon wafer manufacturer, founded in 1983 and Korea’s only dedicated producer of semiconductor wafers. It reported 2025 revenue of about ₩2 trillion and operating profit of about ₩400 billion. About half its revenue comes from Samsung Electronics and SK hynix.
Wafer types: polished and epitaxial silicon wafers up to 300 mm, plus silicon carbide wafers through its US subsidiary SK Siltron CSS in Michigan.
Customers: Korean memory makers above all, alongside logic customers.
Recent development: in July 2026, SK Inc. signed an agreement to sell its 70.6% stake in SK Siltron to Doosan Group for about ₩2.3 trillion.
Specialty and Regional Wafer Manufacturers
Specialty wafer manufacturers compete on wafer type rather than volume. Their products, such as SOI, high-resistivity RF or MEMS wafers, often carry tighter custom specifications than standard polished wafers.
Soitec
Soitec is a Bernin, France-based manufacturer of engineered substrates and the leading supplier of SOI wafers, built on its proprietary Smart Cut technology. Its SOI wafers serve three main uses: RF-SOI for mobile front ends, FD-SOI for automotive and connected devices, and photonics SOI. Soitec produces in Bernin and at Pasir Ris, Singapore, where an extension was planned to double local output to around two million 300 mm SOI wafers a year. Shin-Etsu and GlobalWafers both hold licenses to make SOI wafers with Soitec technology.
Okmetic
Okmetic is a Vantaa, Finland-based manufacturer of customized silicon wafers for MEMS, sensors, RF and power devices, owned by China’s National Silicon Industry Group since 2016. Its range includes SOI wafers, high-resistivity RF wafers and low-COP wafers for power devices. Okmetic describes itself as the world’s seventh largest wafer manufacturer. Its expanded Vantaa fab produced its first wafers in 2025, as part of an investment of nearly €400 million in new capacity.
Wafer Works
Wafer Works is a Taoyuan, Taiwan-based wafer manufacturer founded in 1997 and listed on the Taipei Exchange. It supplies heavily and lightly doped single-side and double-side polished wafers, epitaxial wafers, SOI wafers for MEMS and smart power, and GaN epitaxial wafers. It operates in Taiwan, mainland China and the US, and reported 2025 revenue of NT$9.8 billion.
Chinese Wafer Manufacturers
China is adding domestic 300 mm wafer capacity to supply its own fabs. The most visible group internationally is National Silicon Industry Group (NSIG), a Shanghai-based semiconductor materials group established in 2015 and the parent of Okmetic. Its international footprint includes Okmetic’s production in Finland.
Silicon Wafer Suppliers and Distributors
A silicon wafer distributor buys wafers from manufacturers and resells them in smaller quantities, often adding services such as oxide or nitride films, dicing, thinning or reclaim. Buyers who need tens or hundreds of wafers, rather than the multi-year volume contracts the major manufacturers sign with chipmakers, usually buy through distributors.
Wafer Manufacturer
Wafer Distributor
What it does
Grows crystals, slices and finishes wafers
Buys from manufacturers and resells
Typical order
Volume, often under long-term contracts
From a single box up
Typical customer
Chipmakers, foundries, IDMs
R&D labs, universities, equipment makers, small fabs
Range
Its own product lines
Many manufacturers, sizes, grades and materials
Added services
Epitaxy, SOI, annealing
Films, dicing, thinning, reclaim, custom specs
Three US distributors are among the most visible:
Silicon Valley Microelectronics (SVM): a Santa Clara, California company selling 100 mm to 300 mm prime and test wafers, plus SOI, gallium arsenide, indium phosphide and silicon carbide, with grinding, polishing and film deposition services.
UniversityWafer: a supplier focused on universities and research labs, specializing in small-quantity orders across silicon and specialty substrates.
Wafer World: a US wafer supplier that acquired Micro Reclaim Technologies as of January 2026, adding reclaim services.
Reclaim services are a separate category. They strip and repolish used test and monitor wafers so fabs can reuse them, which cuts the cost of tool qualification and process monitoring.
Silicon Wafer Manufacturers in the USA
The United States has one advanced 300 mm silicon wafer plant: GlobalWafers America in Sherman, Texas, which opened in May 2025. It is the first advanced high-volume 300 mm wafer plant built in the US in more than two decades, at a cost of about $3.5 billion, and its campus is designed for up to six phases.
US wafer manufacturing has a longer history than that. MEMC, founded by Monsanto, was the last major US-based silicon wafer maker. It later became SunEdison Semiconductor, which GlobalWafers acquired in 2016. MEMC now operates as a GlobalWafers subsidiary in St. Peters, Missouri, where it produces 300 mm SOI wafers for applications including defense and aerospace.
Three public commitments shape the US picture in 2026:
CHIPS Act funding: a $406 million award covering the Sherman plant and the St. Peters SOI facility.
Micron’s financing: announced July 9, 2026, Micron plans to provide $500 million to the Sherman plant and sign a 10-year supply agreement for its output, subject to definitive agreements.
Phase two at Sherman: GlobalWafers had said further construction depended on firm customer commitments. The Micron agreement provides one.
Other major manufacturers also supply US fabs, but none produces advanced 300 mm raw wafers in the US. SK Siltron’s US subsidiary in Michigan makes silicon carbide wafers, not silicon.
How to Choose and Qualify a Silicon Wafer Supplier
Qualifying a silicon wafer supplier means proving that its wafers meet your specification lot after lot, not just on the first samples. Qualifying a new supplier runs in six steps:
Write the purchase spec on SEMI M1. Use the SEMI M18 order form to set diameter, thickness, orientation, resistivity, flatness and surface limits. Missing or ambiguous limits lead to disputes and incoming rejects later.
Request samples with certificates of compliance. Ask for the measurement method behind each certified value, not only the value.
Verify geometry on your own tools. Check thickness, total thickness variation, bow and warp on sample wafers. See silicon wafer thickness and dimensions for standard values by size.
Inspect incoming sample lots. Scan the wafers on your own laser scanners and edge tools and compare the defect classes with the supplier’s final inspection. See how silicon wafers are made for what the supplier checks at final inspection.
Qualify a second source. Five companies supply over 80% of 300 mm wafers, so a second qualified source protects against a disruption at any one of them.
Monitor defect trends after qualification. Track defect density and defect class by supplier, lot and wafer position over time, so drift shows up before it reaches yield.
Steps 4 and 6 are where inspection data decides the outcome. A laser scanner reports light scattering, not defect identity, so a supplier’s particle, a polishing pit and a crystal-origin pit can look alike in the raw counts. AI defect classification sorts those detections into real defect classes on the scanner and edge images a fab already captures, and defect monitoring trends them by supplier and lot. Averroes.ai runs as an overlay on existing inspection tools, trains from 20 to 40 labeled images per defect class, and deploys on premise.
Qualifying Wafers From Multiple Suppliers?
Test AI defect classification on incoming wafers from your suppliers
Frequently Asked Questions
Who is the largest silicon wafer manufacturer?
Shin-Etsu Chemical, through its wafer subsidiary Shin-Etsu Handotai, is widely reported as the largest silicon wafer manufacturer by revenue, followed by SUMCO. Both are based in Japan. GlobalWafers of Taiwan ranks third by revenue, ahead of Siltronic of Germany and SK Siltron of South Korea.
How many major silicon wafer manufacturers are there?
Five major manufacturers supply most of the world’s semiconductor wafers: Shin-Etsu, SUMCO, GlobalWafers, Siltronic and SK Siltron. Together they hold over 80% of the 300 mm wafer market. Specialty manufacturers such as Soitec, Okmetic and Wafer Works serve SOI, MEMS, RF and power applications.
What is the difference between a wafer manufacturer and a distributor?
A wafer manufacturer grows single-crystal silicon ingots and turns them into finished wafers. A distributor buys wafers from manufacturers and resells them in smaller quantities, often adding services such as film deposition, dicing, thinning or reclaim. Chipmakers buy from manufacturers; research labs usually buy from distributors.
Can I buy silicon wafers in small quantities?
Yes. Distributors such as SVM and UniversityWafer sell silicon wafers in small lots, from a single box upward, across many sizes, grades and dopants. Major manufacturers mainly sell in volume to chipmakers under long-term contracts, so small buyers rarely buy from them directly.
Are silicon wafers made in the USA?
Yes. GlobalWafers America produces advanced 300 mm silicon wafers in Sherman, Texas, the only plant of its kind in the US, opened in May 2025. Its subsidiary MEMC produces 300 mm SOI wafers in St. Peters, Missouri. Micron agreed in July 2026 to help finance Sherman’s expansion.
Where are most silicon wafers made?
Most silicon wafers are made in East Asia, in Japan, Taiwan, South Korea and mainland China, where the largest manufacturers run most of their capacity. Europe has production in Germany, Finland and France. Singapore hosts major 300 mm fabs from Siltronic and Soitec.
The largest silicon wafer manufacturers are Shin-Etsu Chemical (through Shin-Etsu Handotai), SUMCO, GlobalWafers, Siltronic and SK Siltron. Together these five hold over 80% of the 300 mm wafer market. Below them are specialty manufacturers such as Soitec for SOI wafers and Okmetic for MEMS and power wafers, and distributors such as SVM and UniversityWafer, which sell prime and test wafers in small quantities.
This guide covers semiconductor-grade wafers only, not solar wafers. It comes from Averroes.ai, an AI visual inspection platform used at wafer inspection gates, and sits within the wafer manufacturing stage of the semiconductor lifecycle.
Key Notes
The Silicon Wafer Market in 2026
The silicon wafer market is a concentrated supply chain in which a handful of manufacturers grow single-crystal silicon and sell polished, epitaxial and SOI wafers to chipmakers. Five companies hold over 80% of the 300 mm market, according to the US Commerce Department, and most supply comes from East Asia.
Demand is rising again. Worldwide wafer shipments reached 3,573 million square inches (MSI) in Q2 2026, up 7.4% from 3,327 MSI a year earlier and 9.1% above Q1 2026, according to the SEMI Silicon Manufacturers Group. SEMI attributes the growth to AI-related demand that now extends beyond advanced logic and memory into power devices and photonics. The recovery follows a soft 2024, when shipments fell 2.7% to 12,266 MSI and wafer revenue fell to $11.5 billion.
Two shifts define the 2026 supply picture:
The buyers are the chipmakers covered in our guide to top semiconductor foundries, plus memory makers and IDMs. To see what happens inside a wafer plant, see how silicon wafers are made.
Top Silicon Wafer Manufacturers Compared
Silicon wafer suppliers fall into three tiers. Major manufacturers grow crystals and supply 300 mm wafers at volume. Specialty manufacturers focus on SOI, MEMS, RF or power wafers. Distributors resell wafers from manufacturers in smaller lots.
Largest silicon wafer manufacturers compared
How we ranked the major manufacturers: by each company’s latest reported revenue from its own filings or results. Report-vendor market share estimates were not used, because published figures conflict.
US dollar values are approximate, at average 2025 exchange rates. Siltronic and SK Siltron are close enough that currency moves can swap their order. Rankings also differ by metric: SK Siltron is reported to rank third worldwide by 300 mm market share, while GlobalWafers ranks third by total revenue.
The Five Major Semiconductor Wafer Manufacturers
These five semiconductor wafer manufacturers supply most of the world’s 300 mm wafers. Each profile covers the same points: what the company makes, where it produces, and its most significant recent development.
1. Shin-Etsu Chemical (Shin-Etsu Handotai)
Shin-Etsu Chemical is a Tokyo-based materials group whose wafer business, Shin-Etsu Handotai (SEH), is widely reported as the world’s largest silicon wafer supplier by revenue. Shin-Etsu does not report wafer revenue on its own. Semiconductor silicon sits inside its Electronic Materials segment, next to products such as photoresists and rare earth magnets.
2. SUMCO
SUMCO is a Tokyo-based dedicated silicon wafer manufacturer, formerly Sumitomo Mitsubishi Silicon, and the second largest supplier by revenue. It reported 2025 net sales of ¥409.6 billion, and operating profit of ¥1.3 billion, well below its 2024 result.
3. GlobalWafers
GlobalWafers is a Hsinchu, Taiwan-based wafer manufacturer and part of the Sino-American Silicon Products group, ranked third by revenue. It reported 2025 revenue of NT$60.6 billion. Less than 30% of its capacity and revenue sits in Taiwan.
4. Siltronic
Siltronic is a Munich-based silicon wafer manufacturer supplying polished and epitaxial wafers to logic, memory and power chipmakers. It reported 2025 sales of €1,347 million, down 4.7% year on year, with an EBITDA margin of 23.5%. GlobalWafers holds a stake in the company.
5. SK Siltron
SK Siltron is a Gumi, South Korea-based silicon wafer manufacturer, founded in 1983 and Korea’s only dedicated producer of semiconductor wafers. It reported 2025 revenue of about ₩2 trillion and operating profit of about ₩400 billion. About half its revenue comes from Samsung Electronics and SK hynix.
Specialty and Regional Wafer Manufacturers
Specialty wafer manufacturers compete on wafer type rather than volume. Their products, such as SOI, high-resistivity RF or MEMS wafers, often carry tighter custom specifications than standard polished wafers.
Soitec
Soitec is a Bernin, France-based manufacturer of engineered substrates and the leading supplier of SOI wafers, built on its proprietary Smart Cut technology. Its SOI wafers serve three main uses: RF-SOI for mobile front ends, FD-SOI for automotive and connected devices, and photonics SOI. Soitec produces in Bernin and at Pasir Ris, Singapore, where an extension was planned to double local output to around two million 300 mm SOI wafers a year. Shin-Etsu and GlobalWafers both hold licenses to make SOI wafers with Soitec technology.
Okmetic
Okmetic is a Vantaa, Finland-based manufacturer of customized silicon wafers for MEMS, sensors, RF and power devices, owned by China’s National Silicon Industry Group since 2016. Its range includes SOI wafers, high-resistivity RF wafers and low-COP wafers for power devices. Okmetic describes itself as the world’s seventh largest wafer manufacturer. Its expanded Vantaa fab produced its first wafers in 2025, as part of an investment of nearly €400 million in new capacity.
Wafer Works
Wafer Works is a Taoyuan, Taiwan-based wafer manufacturer founded in 1997 and listed on the Taipei Exchange. It supplies heavily and lightly doped single-side and double-side polished wafers, epitaxial wafers, SOI wafers for MEMS and smart power, and GaN epitaxial wafers. It operates in Taiwan, mainland China and the US, and reported 2025 revenue of NT$9.8 billion.
Chinese Wafer Manufacturers
China is adding domestic 300 mm wafer capacity to supply its own fabs. The most visible group internationally is National Silicon Industry Group (NSIG), a Shanghai-based semiconductor materials group established in 2015 and the parent of Okmetic. Its international footprint includes Okmetic’s production in Finland.
Silicon Wafer Suppliers and Distributors
A silicon wafer distributor buys wafers from manufacturers and resells them in smaller quantities, often adding services such as oxide or nitride films, dicing, thinning or reclaim. Buyers who need tens or hundreds of wafers, rather than the multi-year volume contracts the major manufacturers sign with chipmakers, usually buy through distributors.
Three US distributors are among the most visible:
Reclaim services are a separate category. They strip and repolish used test and monitor wafers so fabs can reuse them, which cuts the cost of tool qualification and process monitoring.
Silicon Wafer Manufacturers in the USA
The United States has one advanced 300 mm silicon wafer plant: GlobalWafers America in Sherman, Texas, which opened in May 2025. It is the first advanced high-volume 300 mm wafer plant built in the US in more than two decades, at a cost of about $3.5 billion, and its campus is designed for up to six phases.
US wafer manufacturing has a longer history than that. MEMC, founded by Monsanto, was the last major US-based silicon wafer maker. It later became SunEdison Semiconductor, which GlobalWafers acquired in 2016. MEMC now operates as a GlobalWafers subsidiary in St. Peters, Missouri, where it produces 300 mm SOI wafers for applications including defense and aerospace.
Three public commitments shape the US picture in 2026:
Other major manufacturers also supply US fabs, but none produces advanced 300 mm raw wafers in the US. SK Siltron’s US subsidiary in Michigan makes silicon carbide wafers, not silicon.
How to Choose and Qualify a Silicon Wafer Supplier
Qualifying a silicon wafer supplier means proving that its wafers meet your specification lot after lot, not just on the first samples. Qualifying a new supplier runs in six steps:
Steps 4 and 6 are where inspection data decides the outcome. A laser scanner reports light scattering, not defect identity, so a supplier’s particle, a polishing pit and a crystal-origin pit can look alike in the raw counts. AI defect classification sorts those detections into real defect classes on the scanner and edge images a fab already captures, and defect monitoring trends them by supplier and lot. Averroes.ai runs as an overlay on existing inspection tools, trains from 20 to 40 labeled images per defect class, and deploys on premise.
Qualifying Wafers From Multiple Suppliers?
Test AI defect classification on incoming wafers from your suppliers
Frequently Asked Questions
Who is the largest silicon wafer manufacturer?
Shin-Etsu Chemical, through its wafer subsidiary Shin-Etsu Handotai, is widely reported as the largest silicon wafer manufacturer by revenue, followed by SUMCO. Both are based in Japan. GlobalWafers of Taiwan ranks third by revenue, ahead of Siltronic of Germany and SK Siltron of South Korea.
How many major silicon wafer manufacturers are there?
Five major manufacturers supply most of the world’s semiconductor wafers: Shin-Etsu, SUMCO, GlobalWafers, Siltronic and SK Siltron. Together they hold over 80% of the 300 mm wafer market. Specialty manufacturers such as Soitec, Okmetic and Wafer Works serve SOI, MEMS, RF and power applications.
What is the difference between a wafer manufacturer and a distributor?
A wafer manufacturer grows single-crystal silicon ingots and turns them into finished wafers. A distributor buys wafers from manufacturers and resells them in smaller quantities, often adding services such as film deposition, dicing, thinning or reclaim. Chipmakers buy from manufacturers; research labs usually buy from distributors.
Can I buy silicon wafers in small quantities?
Yes. Distributors such as SVM and UniversityWafer sell silicon wafers in small lots, from a single box upward, across many sizes, grades and dopants. Major manufacturers mainly sell in volume to chipmakers under long-term contracts, so small buyers rarely buy from them directly.
Are silicon wafers made in the USA?
Yes. GlobalWafers America produces advanced 300 mm silicon wafers in Sherman, Texas, the only plant of its kind in the US, opened in May 2025. Its subsidiary MEMC produces 300 mm SOI wafers in St. Peters, Missouri. Micron agreed in July 2026 to help finance Sherman’s expansion.
Where are most silicon wafers made?
Most silicon wafers are made in East Asia, in Japan, Taiwan, South Korea and mainland China, where the largest manufacturers run most of their capacity. Europe has production in Germany, Finland and France. Singapore hosts major 300 mm fabs from Siltronic and Soitec.