Vanguard International Semiconductor Corporation
Taiwanese specialized integrated-circuit foundry serving analog, mixed-signal, memory, logic, MEMS, and automotive applications.
Last updated August 26, 2026
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Overview
Vanguard International Semiconductor Corporation, commonly known as VIS, is a Taiwanese specialized integrated-circuit foundry headquartered in Hsinchu Science Park. The company was established in December 1994 by Morris Chang and initially operated in close connection with Taiwan Semiconductor Manufacturing Company (TSMC). Its early manufacturing activities included subcontracted production of logic and mixed-signal products for TSMC, while the company also concentrated on developing and manufacturing dynamic random-access memory and other memory integrated circuits. VIS changed its strategic direction at the beginning of the 2000s. In 2000, it announced a plan to move away from DRAM manufacturing and become a dedicated foundry-service provider. The transition was completed in February 2004, when the company ended DRAM production and adopted a pure-play foundry model. This shift placed VIS within the segment of semiconductor manufacturers that produce chips designed by other companies rather than marketing a broad portfolio of proprietary consumer devices under their own brand. The company expanded its manufacturing footprint through the acquisition of two 200-millimeter production lines, Fab 4 and Fab 5, from Winbond Electronics. The transaction was completed in January 2008 and increased VIS's ability to manufacture mature-node and specialized integrated circuits. These facilities supported the company's focus on process technologies and products that require reliable, high-volume production rather than the most advanced leading-edge logic processes. VIS's manufacturing scope includes analog and mixed-signal integrated circuits, logic products, memory-related technologies, and microelectromechanical systems, or MEMS. Its foundry services are relevant to a range of end markets, including automotive electronics. The company has also developed an international manufacturing presence. On December 31, 2019, VIS completed the purchase of GlobalFoundries' Fab 3E in Tampines, Singapore. The facility produces MEMS and analog/mixed-signal chips and was described as having capacity of approximately 35,000 200-millimeter wafer starts per month. The company is therefore positioned as a specialized and mature-process foundry rather than a general-purpose supplier focused primarily on the newest digital logic nodes. Its business model depends on manufacturing expertise, process-platform breadth, long-term customer relationships, and the ability to support application-specific demand in areas such as automotive, industrial, consumer, and other electronics markets. The available reference material describes production capacity of approximately 199,000 wafers per month as of 2018, although capacity changes over time and the figure should not be treated as a current operating level without a newer company disclosure. VIS remains an active Taiwan-based semiconductor manufacturing company with production operations in Taiwan and Singapore. Its history is defined by the transition from memory manufacturing to specialized foundry services, the expansion of its 200-millimeter wafer manufacturing base, and the addition of MEMS and analog/mixed-signal production capability through the Singapore facility.
History
Vanguard International Semiconductor Corporation was founded in December 1994 in Hsinchu Science Park, Taiwan, by Morris Chang. Its early business was connected to the developing Taiwanese foundry model. VIS worked as a subcontractor for TSMC, manufacturing logic and mixed-signal products, while its own development and production activities focused substantially on DRAM and other memory integrated circuits. The company announced a major strategic change in 2000. Rather than continue primarily as a DRAM manufacturer, VIS planned to become a specialized foundry-service provider. This decision reflected a move toward manufacturing chips designed by external customers and away from depending on the volatile memory-chip business. By February 2004, VIS had completely stopped DRAM production and had become a pure-play foundry company. VIS strengthened its manufacturing base through the purchase of Fab 4 and Fab 5, two 200-millimeter production lines belonging to Winbond Electronics Corporation. The acquisition was finalized in January 2008. The additional facilities expanded VIS's ability to manufacture specialized integrated circuits on established wafer platforms and supported its development as a mature-process foundry. The company has served a broad range of semiconductor applications. Its capabilities include analog and mixed-signal chips, logic products, memory-related products, and MEMS. The company is also identified as a significant supplier to the automotive industry, an area in which long-term reliability, process consistency, and specialized product support are important manufacturing requirements. VIS extended its footprint beyond Taiwan through the acquisition of GlobalFoundries' Fab 3E in Tampines, Singapore. The transfer of ownership took place on December 31, 2019. The Singapore facility manufactures MEMS and analog/mixed-signal chips and was described as having capacity of approximately 35,000 200-millimeter wafer starts per month. The purchase broadened VIS's international production base and added a facility with capabilities aligned with its specialized foundry strategy. As of 2018, the company was described as having production capacity of approximately 199,000 wafers per month. This historical capacity figure illustrates the scale of its manufacturing operations at that time, but it is not necessarily representative of current capacity. VIS's publicly described evolution is consequently centered on three stages: its formation and early memory-oriented manufacturing, its completed transition to pure-play foundry services, and its later expansion through additional 200-millimeter facilities and MEMS and analog/mixed-signal production in Singapore.
- 2019
Singapore Fab 3E transfer is completed
[1]Ownership of GlobalFoundries' Fab 3E in Tampines, Singapore, transferred to VIS on December 31.
- 2018
Historical production capacity reaches approximately 199,000 wafers per month
[1]Reference material described VIS as having production capacity of approximately 199,000 wafers per month.
- 2008
Winbond fab acquisition is finalized
[1]VIS completed the purchase of Winbond Electronics' Fab 4 and Fab 5 200-millimeter production lines.
- 2004
DRAM production ends
[1]The company completed its withdrawal from DRAM manufacturing in February and operated as a pure-play foundry.
- 2000
Strategic shift toward pure-play foundry services
[1]VIS announced plans to transform from a DRAM manufacturer into a semiconductor foundry.
- 1998
VIS becomes a publicly traded company
[1]In March 1998, VIS became listed on Taiwan's Over-The-Counter Stock Exchange.
- 1994
Vanguard International Semiconductor is founded
[1]VIS was established in December 1994 in Hsinchu Science Park, Taiwan, by Morris Chang.
Products and positioning
Specialized foundry services for mature and differentiated semiconductor processes, with emphasis on analog, mixed-signal, logic, memory-related, MEMS, and automotive applications.
Semiconductor manufacturing services · 2004
Specialized foundry services
VIS manufactures integrated circuits designed by external customers rather than operating primarily as a merchant chip brand. Its foundry model is oriented toward specialized and mature-process applications, where customers require dependable wafer manufacturing, established process technologies, and production support across analog, mixed-signal, logic, memory-related, automotive, and other electronics products.
Integrated circuits
Analog and mixed-signal integrated circuits
Analog and mixed-signal manufacturing is a core part of VIS's specialized foundry portfolio. These products combine or process real-world signals with digital functions and are used across industrial, consumer, automotive, and other electronic systems. VIS produces these devices for customers using its 200-millimeter manufacturing infrastructure and related process capabilities.
Integrated circuits · 1994
Logic integrated circuits
Logic products were among the devices manufactured by VIS during its earlier subcontracting relationship with TSMC and remain part of the company's described foundry scope. The company supplies manufacturing capability rather than presenting these products primarily as a consumer-facing proprietary brand.
Memory semiconductors · 1994
Memory integrated circuits
VIS originally concentrated substantially on DRAM and other memory integrated circuits. Memory manufacturing was an important part of its early history, but the company later exited DRAM production as it repositioned itself as a specialized pure-play foundry. Memory-related manufacturing is therefore historically significant even though DRAM production was discontinued in 2004.
Microelectromechanical systems · 2019
MEMS manufacturing
VIS provides manufacturing for microelectromechanical systems through its specialized foundry operations. The Singapore Fab 3E facility acquired from GlobalFoundries manufactures MEMS alongside analog and mixed-signal chips, giving VIS an international production location for differentiated sensor and electromechanical semiconductor technologies.
Brand decisions
2019
Purchase GlobalFoundries Fab 3E in SingaporeM&ABackground
VIS pursued additional international capacity and capabilities in MEMS and analog/mixed-signal manufacturing.
Action taken
VIS purchased GlobalFoundries' Fab 3E in Tampines, Singapore. The ownership transfer occurred on December 31, 2019.
Aftermath
The acquisition added a Singapore manufacturing site producing MEMS and analog/mixed-signal chips, with reported capacity of about 35,000 200-millimeter wafer starts per month.
Acquisition price. 236 million USD (2019 acquisition; amount reported for the Fab 3E purchase)
2008
Acquire Winbond Electronics' Fab 4 and Fab 5M&ABackground
VIS sought to expand its 200-millimeter manufacturing capabilities as part of its specialized foundry strategy.
Action taken
VIS purchased two 200-millimeter production lines, Fab 4 and Fab 5, from Winbond Electronics Corporation.
Aftermath
The transaction was finalized in January 2008 and expanded VIS's available manufacturing infrastructure.
2000
Transform from DRAM manufacturing to foundry servicesStrategyBackground
VIS had been involved in DRAM and other memory production while also manufacturing logic and mixed-signal products as a TSMC subcontractor.
Action taken
The company announced a plan to leave its DRAM-centered model and develop into a dedicated foundry-service provider.
Aftermath
The transition was completed in February 2004, when VIS ended DRAM production and became a pure-play foundry.
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