30-Second Explanation
TSMC pioneered the pure-play foundry model.
A customer can design a processor, networking chip, smartphone chip or other semiconductor and send that design to TSMC. TSMC then uses its process technology, factories, equipment, manufacturing know-how and increasingly advanced packaging to turn the design into physical silicon.
In 2025 TSMC manufactured 12,682 products using 305 technologies for 534 customers. [S3]
The company is Taiwanese, with common shares listed on the Taiwan Stock Exchange. Its American Depositary Shares trade on the New York Stock Exchange under TSM, which is why it belongs in BizTear's coverage of companies traded on U.S. markets. [S3][S4][S20]
The simplest way to understand TSMC is:
Customer designs the chip
↓
TSMC provides manufacturing technology and capacity
↓
TSMC fabricates, packages and tests the product
↓
Customer sells or uses the finished semiconductorHow TSMC Actually Works
TSMC sits between chip design and finished electronic systems.
TSMC does not usually decide what the customer's chip should do.
The customer owns the product concept and proprietary IC design.
TSMC's job is to make that design manufacturable at the required:
- performance;
- power;
- density;
- yield;
- quality;
- scale;
- delivery schedule.
TSMC's 2025 Form 20-F describes the business as manufacturing semiconductors using TSMC processes based on proprietary designs provided by customers. It also provides design, mask-making, advanced stacking and packaging, and testing services. [S1]
That separation of roles is the foundation of the company's business model.
What TSMC Does
Process technology
TSMC develops the manufacturing processes used to build transistors and interconnects on silicon.
These range from leading-edge logic technologies to mature and specialty nodes.
Examples include:
- N3;
- N2;
- A16;
- radio-frequency technologies;
- embedded memory;
- automotive technologies;
- other specialty processes.
The process is not the customer's chip design.
It is the manufacturing technology that makes the design physically possible.
Wafer fabrication
TSMC operates semiconductor fabs that transform bare silicon wafers through hundreds of manufacturing steps.
The value is not simply "having a factory."
Customers pay for a combination of:
process technology
+ equipment
+ manufacturing know-how
+ yield
+ scale
+ quality
+ deliveryDesign enablement
A customer must design a chip that can actually be manufactured on a TSMC process.
TSMC therefore provides design infrastructure through the Open Innovation Platform.
This connects:
- EDA providers;
- IP providers;
- design libraries;
- TSMC process rules;
- customer design flows.
Advanced packaging and 3D integration
As chips become larger and AI systems require more memory bandwidth, not every performance improvement can come from shrinking transistors.
TSMC has therefore expanded into advanced integration through 3DFabric, including technologies such as CoWoS and SoIC.
This moves TSMC from:
manufacture one dietoward:
integrate multiple dies, memory and interconnects into one system packageTesting, masks and related services
TSMC also provides services including:
- mask making;
- testing;
- packaging;
- computer-aided design support.
The company reports one operating segment: the foundry segment. [S25]
Technologies, Platforms & Services
N2
N2 is TSMC's 2-nanometer technology family and its first production logic generation using nanosheet transistors.
Why it exists
To continue improving power, performance and density as older transistor structures become harder to scale.
Where it sits
Leading-edge wafer fabrication.
Who uses it
Customers designing advanced smartphone and high-performance-computing products.
N2 entered high-volume manufacturing in the fourth quarter of 2025 and began contributing to wafer revenue in 2026. [S2][S6][S8]
A16
A16 extends the N2 technology family with backside power delivery through TSMC's Super Power Rail approach.
Why it exists
Advanced HPC chips face increasingly difficult power-delivery and signal-routing constraints.
Where it sits
Leading-edge logic after N2/N2P, especially for high-performance computing.
3DFabric
TSMC 3DFabric is TSMC's umbrella platform for 3D silicon stacking and advanced packaging.
Why it exists
Modern systems increasingly need multiple dies, different process technologies and high-bandwidth memory to work together.
Where it sits
Between wafer fabrication and complete semiconductor-system integration.
CoWoS
CoWoS is a 2.5D advanced-packaging platform used heavily in AI and HPC.
Why it exists
Large compute dies need extremely high-bandwidth connections to HBM and other components.
Where it sits
Advanced packaging within 3DFabric.
SoIC
TSMC-SoIC is a 3D silicon-stacking platform.
Why it exists
Some systems benefit from stacking dies vertically with very short, dense die-to-die connections.
Where it sits
Wafer-level 3D integration within the broader 3DFabric platform.
Open Innovation Platform
Open Innovation Platform is TSMC's design ecosystem.
Why it exists
Customers need validated design tools, IP and workflows to turn a chip idea into manufacturable silicon quickly.
Where it sits
Before fabrication, connecting customer design teams to TSMC technologies and ecosystem partners.
The TSMC Stack
TSMC's business is often described as "chip manufacturing," but customers interact with a much broader stack.
This stack explains why a foundry can create more value than "renting factory space."
The foundry has to coordinate technology from design rules through physical manufacturing and increasingly through package-level integration.
Who Uses TSMC?
TSMC's direct users are companies that need semiconductors manufactured.
They include several different business types.
Fabless semiconductor companies
Fabless companies design chips but outsource manufacturing.
For this customer, TSMC is the physical manufacturing layer.
System companies designing their own chips
A cloud, consumer-electronics or other system company can design custom silicon internally and work directly with a foundry.
TSMC's Form 20-F identifies this as a growing customer pattern. [S1]
Integrated device manufacturers
Even companies with their own manufacturing can use external foundries for selected products or technologies.
End users
The person using the final device may never see the TSMC name.
TSMC-made chips appear inside:
- data centers;
- smartphones;
- vehicles;
- networking systems;
- consumer electronics;
- IoT devices.
In 2025 TSMC grouped its major end-market platforms as:
High Performance Computing
Smartphone
Internet of Things
Automotive
Digital Consumer Electronics
OthersBy the second quarter of 2026, HPC accounted for 66% of net revenue and smartphones 22%, showing how strongly the business had shifted toward advanced computing. [S6]
Who Pays TSMC?
TSMC is paid by the companies that order manufacturing and related foundry services.
The basic money path is:
Chip designer / system company
↓ pays for
process technology + wafer manufacturing + related services
↓
TSMC
↓ spends on
R&D + fabs + equipment + materials + people + utilitiesThe customer then monetizes its own product separately.
For example:
Chip designer
↓ pays
TSMC
↓ manufactures
chip
↓ sold / integrated by customer
server, phone, car or cloud system
↓ paid for by
customer's end userTSMC does not need to own the customer's final brand.
Its economics come from manufacturing the underlying semiconductor.
Customer concentration matters
TSMC serves hundreds of customers, but revenue is more concentrated than the customer count suggests.
In 2025:
- the largest customer accounted for 19% of net revenue;
- the second-largest customer accounted for 17%;
- the ten largest customers accounted for about 78%. [S1][S25]
TSMC does not identify those two customers in that disclosure.
BizTear should not guess.
How TSMC Makes Money
TSMC earns revenue by providing foundry services.
Its financial statements report one operating segment: foundry. [S25]
The business model is:
Invest heavily in process R&D
↓
Build expensive manufacturing capacity
↓
Qualify technology with customers
↓
Customers design products for TSMC processes
↓
Manufacture wafers at scale
↓
Improve yield and utilization
↓
Move customers to newer technologies over time
↓
Add packaging / testing / integration valueWhat the customer is really paying for
A customer is not simply buying a piece of silicon.
The customer is paying for access to:
- manufacturing technology;
- capacity;
- yield;
- quality;
- reliability;
- engineering support;
- time-to-market;
- packaging and integration options.
Why advanced nodes matter economically
New process generations require enormous R&D and capital investment.
But customers using leading-edge processes may be willing to pay for:
- better performance;
- lower power;
- greater density;
- strategic capacity.
In Q2 2026, technologies at 7nm and below represented 77% of TSMC's wafer revenue. [S6]
That illustrates how heavily the company's economics depend on advanced technology, even though TSMC also operates mature and specialty processes.
What TSMC Depends On
TSMC is one of the most capable manufacturing companies in the semiconductor industry, but its business still depends on a large upstream ecosystem.
Semiconductor manufacturing equipment
TSMC's Form 20-F states that advances in process technology require corresponding advances in equipment technology.
The company uses equipment for:
- lithography;
- etch;
- deposition;
- inspection;
- ion implantation;
- cleaning;
- polishing;
- testing.
Some equipment is available from a limited number of suppliers. [S1]
Relationship type
TSMC → semiconductor equipment suppliers
Type: upstream dependency
Why it matters: process capability cannot advance without equipment capabilitySilicon wafers and raw materials
TSMC uses:
- silicon wafers;
- chemicals;
- gases;
- precious metals;
- other specialized materials.
Its Form 20-F says most raw materials are available from multiple suppliers, but some are sole-sourced, and the majority of raw wafers come from a limited number of suppliers in Taiwan, Japan, Germany and Singapore. [S1]
Electricity and water
Semiconductor fabs require large and reliable supplies of:
- electricity;
- ultra-pure water;
- industrial gases.
A fabrication line cannot operate normally without stable utility infrastructure.
Skilled engineering talent
TSMC depends on engineers in:
- process integration;
- device engineering;
- equipment;
- yield;
- manufacturing;
- materials;
- packaging;
- software and automation.
A new fab is not just a building and equipment set.
It requires an experienced manufacturing organization.
Customer demand and forecasts
Fabs take years to build.
TSMC therefore has to make capacity decisions before future demand is fully known.
This creates a fundamental dependency:
customer forecasts
↓
capacity decisions today
↓
manufacturing capacity years laterC.C. Wei has repeatedly described capacity planning as a long-duration exercise. [S2][S7]
EDA and IP ecosystems
A process node is more useful when customers can design products for it.
TSMC therefore depends on relationships with:
- EDA vendors;
- IP providers;
- design-service partners.
This is the purpose of OIP.
Who Depends on TSMC?
"Depends on" does not mean "has no alternative."
It means TSMC can occupy an important part of a customer's production strategy.
Fabless chip designers
A fabless designer can invest heavily in architecture and product engineering without owning advanced fabs.
The foundry relationship makes that business model possible.
System companies building custom chips
Cloud and consumer-electronics companies increasingly design custom processors.
They may rely on TSMC to turn those internal designs into physical products.
EDA and IP ecosystem partners
Design tools and IP become more valuable when they are qualified for widely used foundry technologies.
AI infrastructure
Modern AI accelerators depend not only on advanced logic fabrication but also on HBM integration and advanced packaging.
TSMC's CoWoS growth shows how foundry and packaging capacity can become a system-level constraint.
The fabless semiconductor model itself
The broader industry benefits from having independent manufacturing capacity that does not launch competing branded processors.
That institutional role is central to the pure-play foundry model.
Company Relationship Map
The purpose of this map is to explain relationship types.
Customers
TSMC's filings identify customers ranging from:
fabless semiconductor companies
system companies
integrated device manufacturersThe customer relationship is:
Customer owns product design
↓
TSMC manufactures
↓
Customer owns market-facing productTSMC's historical and regulatory filings have publicly named companies including NVIDIA, AMD, Qualcomm and Broadcom among customers, but current customer-concentration disclosures keep the two largest customers anonymous. [S1]
EDA and IP partners
TSMC ↔ EDA / IP partners
Type: ecosystem relationship
Scope: design enablement
Platform: OIPThe relationship helps customers design products that can move into manufacturing.
Equipment and material suppliers
Supplier → TSMC
Type: upstream manufacturing dependency
Scope: equipment, wafers, chemicals, gases and materialsTSMC can influence equipment development as a large customer, but it does not replace the supplier's technology.
Foundry competitors
TSMC's 2025 Form 20-F describes competition from:
- other foundry service providers;
- foundry operations of IDMs.
Competition occurs on:
process technology
manufacturing capacity
product quality
supply-chain resilience
customer satisfaction
service
yield
cycle timeCompetition by Business Layer
TSMC does not compete with every semiconductor company.
It competes within specific manufacturing and service layers.
Leading-edge logic foundry
The main competitive dimension is the ability to deliver advanced process technology at scale.
Factors include:
- performance;
- power;
- density;
- yield;
- timing;
- capacity.
At the leading edge, current public filings from industry participants identify TSMC and Samsung among the principal competitors, with Intel also investing in advanced external foundry services.
Mature and specialty foundry
Competition is broader.
Customers may prioritize:
- cost;
- specialty features;
- long product life;
- geographic capacity;
- customer support.
The competitive set can differ significantly from advanced logic.
Advanced packaging
As advanced packaging becomes more important, competition increasingly involves:
- 2.5D integration;
- 3D stacking;
- package size;
- memory integration;
- yield;
- capacity.
This creates overlap between foundries and traditional packaging providers.
Design enablement
TSMC also competes indirectly on:
- ecosystem depth;
- IP availability;
- design readiness;
- time-to-market.
A process with weak design enablement can be commercially less useful even if the transistor technology is strong.
History
1987 — TSMC is founded
1994 — Taiwan listing
TSMC listed its shares on the Taiwan Stock Exchange on September 5, 1994. [S20]
1997 — NYSE ADS listing
TSMC's American Depositary Shares listed on the NYSE under TSM on October 8, 1997. [S20]
2000s — Foundry scale expands
The company continued expanding large wafer fabs and advancing process technology as the fabless semiconductor model grew.
2008 — Open Innovation Platform
TSMC launched its Open Innovation Platform to connect process technology, design tools and IP ecosystems more closely.
2012 — CoWoS enters production
TSMC completed CoWoS qualification and transferred the technology into production, creating an important foundation for later AI/HPC packaging. [S21]
2018 — Morris Chang retires
2020 — Arizona expansion begins
TSMC announced plans for advanced semiconductor manufacturing in Arizona, marking a major expansion of leading-edge production outside Taiwan.
2022 — N3 enters volume production
TSMC's 3nm generation entered high-volume manufacturing.
2024 — Leadership consolidates under C.C. Wei
2025 — N2 enters high-volume manufacturing
How TSMC Changed
| Dimension | Early TSMC | TSMC today |
|---|---|---|
| Core identity | Dedicated wafer foundry | Global foundry and integration platform |
| Main value | Independent manufacturing capacity | Process technology + scale + yield + packaging + design ecosystem |
| Customer base | Semiconductor companies needing external fabs | Fabless, system companies, IDMs, AI/HPC and mobile ecosystems |
| Technology scope | Wafer fabrication | Advanced logic + specialty + advanced packaging + design enablement |
| Geographic footprint | Primarily Taiwan | Taiwan plus U.S., Japan, China and expansion in Europe |
| Integration level | Manufacture individual chips | Manufacture, stack, package and test multi-die systems |
| Strategic bottleneck | Fab capacity | Fab capacity + advanced packaging + global capacity + talent |
| Customer relationship | Contract manufacturer | Long-term technology and capacity partner |
The most important change is that TSMC did not abandon the pure-play model as it grew.
Instead, it expanded what a pure-play foundry can provide.
Turning Points
Turning Point 1 — Pure-play foundry model
What changed
Manufacturing became a standalone business rather than only an internal department of an integrated semiconductor company.
Why it mattered
Chip designers could build companies without financing their own leading-edge fabs.
What it enabled next
The fabless semiconductor ecosystem.
Turning Point 2 — Leading-edge process leadership
What changed
TSMC moved from providing manufacturing capacity to becoming a key source of advanced process technology.
Why it mattered
Customers increasingly designed important products around TSMC process roadmaps.
What it enabled next
Deeper long-term technology planning between foundry and customer.
Turning Point 3 — OIP and design ecosystem
What changed
TSMC helped organize EDA, IP and design enablement around its manufacturing processes.
Why it mattered
A foundry node became more useful because customers could design for it faster.
What it enabled next
A wider platform around manufacturing.
Turning Point 4 — Advanced packaging
What changed
TSMC moved beyond single-die manufacturing through CoWoS, SoIC and 3DFabric.
Why it mattered
AI and HPC systems increasingly need logic, HBM and chiplets integrated together.
What it enabled next
TSMC could participate in system-level integration rather than only transistor scaling.
Turning Point 5 — Geographic manufacturing expansion
What changed
TSMC expanded advanced and specialty manufacturing in the United States, Japan and Europe while continuing major investment in Taiwan.
Why it mattered
Customers and governments increasingly value supply-chain resilience and local capacity.
What it enabled next
A more geographically distributed manufacturing network.
Leadership
Morris Chang
Morris Chang founded TSMC in 1987 and built the company around the pure-play foundry model.
His importance is not merely that he started another semiconductor company.
The business model helped create a clearer separation between:
chip design
and
chip manufacturingThat separation became foundational to the fabless semiconductor industry.
C.C. Wei
What Most People Miss
1. Customer neutrality is part of the product
Customers do not only buy wafer manufacturing.
They also buy confidence that the foundry's business model is built around manufacturing customer designs rather than launching a competing branded processor.
TSMC emphasized this principle in its early public company materials. [S19]
Customer trust is therefore not only a cultural slogan.
It is part of the commercial architecture.
2. The product is not the wafer
A wafer is the physical output, but the customer is really buying:
technology
+ manufacturability
+ yield
+ capacity
+ predictability
+ ecosystemThis is why foundry competition cannot be reduced to price per wafer.
3. Process nodes are only one part of the modern foundry business
For AI/HPC, advanced packaging can become just as strategically important as transistor scaling.
A cutting-edge logic die still needs:
- HBM;
- interconnect;
- packaging;
- power delivery.
This is why CoWoS capacity became strategically important.
4. TSMC can be highly important without owning the chip brand
The final product may carry the customer's brand, not TSMC's.
TSMC's value is embedded in the manufacturing layer.
5. Hundreds of customers do not mean revenue is evenly distributed
6. Overseas fabs change resilience and economics at the same time
Geographic expansion can bring manufacturing closer to customers and improve resilience.
But TSMC has also said overseas-fab ramp-up dilutes gross margin during early stages. [S7]
The strategy therefore involves a trade-off:
resilience / proximity / geographic diversification
vs.
higher cost and execution complexityCommon Misconceptions
"TSMC designs NVIDIA and Apple chips."
No.
TSMC manufactures customer semiconductor designs using TSMC process technologies.
The customer owns the product architecture and design.
"TSMC is just a contract factory."
Too simple.
A leading-edge foundry develops:
- transistor technology;
- manufacturing processes;
- yield systems;
- design rules;
- packaging;
- ecosystem support.
The factory is only one physical part of the capability.
"TSMC competes directly with its customers."
The pure-play model is specifically designed to avoid that broad conflict.
TSMC does not build a competing branded CPU or GPU product line.
That customer neutrality is one of the foundations of its business.
"TSMC is a U.S. company."
"TSMC only matters for the smallest process node."
No.
TSMC operates:
- advanced logic;
- mature and specialty nodes;
- advanced packaging;
- design enablement;
- testing and mask services.
"Advanced packaging is a low-value back-end step."
Increasingly false.
For AI and HPC, package architecture can determine:
- memory bandwidth;
- die-to-die communication;
- power;
- system size;
- performance.
Common Questions
What does TSMC actually do?
TSMC manufactures semiconductor products based on customer designs and provides related process, design-enablement, packaging and testing services.
Does TSMC design its own CPUs or GPUs?
Its pure-play foundry model is built around manufacturing customer products rather than launching its own competing branded processors.
Is TSMC listed in the United States?
Who founded TSMC?
Morris Chang founded TSMC in 1987.
What is TSMC's CIK?
TSMC's SEC CIK is 0001046179. [S4]
What is a pure-play foundry?
A pure-play foundry focuses on manufacturing semiconductors for customers rather than selling a broad line of competing branded chips of its own.
What is TSMC N2?
N2 is TSMC's 2nm process family and its first production logic technology using nanosheet transistors.
What is CoWoS?
CoWoS is TSMC's advanced 2.5D packaging platform for integrating logic dies and high-bandwidth memory.
What Changed Recently
Q4 2025 — N2 entered high-volume manufacturing
Q2 2026 — N2 reached 3% of wafer revenue
TSMC reported that 2nm accounted for 3% of Q2 2026 wafer revenue. [S6]
Why it matters
N2 had moved from roadmap to commercial revenue and was beginning a steep production ramp.
Q2 2026 — HPC reached 66% of revenue
TSMC reported HPC at 66% of second-quarter 2026 net revenue. [S6]
Why it matters
The company's business mix is now heavily tied to data-center and high-performance-computing demand rather than the smartphone market alone.
July 2026 — Capital budget increased to US$60–64 billion
TSMC raised its 2026 capital budget to US$60–64 billion, with about 70–80% directed to advanced process technologies and 10–20% to advanced packaging, testing, mask making and other areas. [S7]
Why it matters
Resource allocation shows how strongly TSMC is investing behind structural AI/HPC demand.
2026 — CoWoS continues scaling
At its 2026 technology symposium, TSMC described larger CoWoS configurations and future plans for substantially larger integrations. [S24]
Why it matters
Foundry value is expanding from transistor manufacturing toward system-level integration.
2026 — U.S. manufacturing plans expanded
TSMC Arizona says the planned U.S. footprint includes multiple logic fabs, advanced-packaging facilities and an R&D center, with additional expansion plans announced in 2026. [S23]
Why it matters
TSMC is building a more geographically distributed manufacturing network while remaining anchored in Taiwan.
Evidence
Claim: TSMC pioneered the pure-play foundry model
Claim: TSMC is a foreign private issuer whose ADSs trade in the U.S.
Claim: TSMC had 534 customers in 2025
Source: TSMC company profile. [S3]
Claim: The two largest customers represented 19% and 17% of 2025 net revenue
Claim: TSMC's business is one foundry operating segment
Source: 2025 consolidated financial statements. [S25]
Claim: N2 began high-volume manufacturing in Q4 2025
Claim: HPC represented 66% of Q2 2026 revenue
Source: Q2 2026 management report. [S6]
Claim: TSMC depends on limited-supplier manufacturing equipment and raw materials
Source: FY2025 Form 20-F. [S1]
Explore TSMC
Process Technologies
- TSMC N2
- TSMC A16
Integration & Packaging
- TSMC 3DFabric
- CoWoS
- TSMC-SoIC
Design Ecosystem
- TSMC Open Innovation Platform
People
- Morris Chang
- C.C. Wei