GCRI · 贸易与战略资源
半导体与元器件
Semiconductors are made through a long value chain of design, specialised materials, manufacturing equipment, fabrication and assembly, with several steps concentrated in a few firms and places. Shortages can stall vehicles, medical devices and infrastructure. This page sets out how the chip value chain is structured, where it concentrates, how disruptions propagate, and what evidence serves the governments and industries that depend on it.
Semiconductors and components: how the risk develops.
Electronics, advanced materials and fabrication inputs. The dossier below sets out how the risk develops, what is measured, where the data come from, how it is modelled and who decides.
Each step is specialised
Design tools, wafers, speciality gases and chemicals, lithography equipment, fabrication and packaging are each dominated by few suppliers. A bottleneck at any step limits output.
Fabs take years and vast capital
Leading fabrication plants cost billions and take years to build. Capacity cannot be added quickly when demand changes or supply is disrupted.
Geography concentrates risk
Advanced fabrication and assembly cluster in a few regions exposed to earthquakes, drought, power outages and geopolitical tension.
Shortages hit downstream industries
Products need many chips, including mature, low-cost ones. A 短缺 of a single component can halt production lines far from where chips are made.
Supplier tier map.
团队跟踪该主题时会使用的界面：其指标、状态与决策。名称为示例，数值仅作示意。
Supplier tier map
Semiconductors and components · Assembly cluster · Bill of materials BOM-059
Tier mapping
- 第 1 级12 suppliers
- 第 2 级47
- 第 3 级83
- Raw materials5
集中度
| Rare earth magnet | 70 | 4002 | None qualified | 高 |
| Gallium | 61 | 4836 | Recycling pilot | 高 |
| Copper wire | 40 | 1196 | Two qualified | 低 |
| Lithium cells | 52 | 2554 | One qualified | 中 |
Mitigation
- Dual source
- qualification 11 months
- Buffer stock
- 9 weeks
- Design change
- substitution study
- 负责人
- 采购负责人
Chips sit inside the control systems of every domain.
Component supply studies are designed for the 战略系统系列. The European Chips Act (2023) is one of several national and regional responses to concentration in fabrication; the page names no firm.
How semiconductors and components is modelled, measured and tested.
模型、其假设、数据和不确定性，以科学家或工程师会核查的形式呈现。结构遵循已发表的方法。所取数值仅为示意，不是研究发现。
系统模型
The couplings between the systems in semiconductors and components: signs of influence, a reinforcing and a balancing loop, and cross-links where stress jumps.
衡量什么，以及衡量得如何。
每个指标都注明其单位、频率、背后的来源类型以及数值将附带的证据标签。此处不显示数值：数值由计划依据其自身权限提供。
| 指标 | 单位 | 节奏 | 来源类型 | 标签 |
|---|---|---|---|---|
| Share of fabrication capacity by region | percent of wafer capacity | 年度 | Industry analyses | 估算 |
| Chip trade by product code | value of trade in integrated circuits | 年度 | 贸易统计 | 已发布统计 |
| Supplier concentration in key inputs | number of suppliers with significant share | 每次评估 | Value chain studies | 估算 |
| 提前量 for chip orders | 周 | 每月 | Industry surveys | 已报告 |
| Export control measures on semiconductors | 措施数量 | 每次变更 | Government notices | 已发布统计 |
| Fabs exposed to natural hazards | count by hazard zone | 每次评估 | Site and hazard overlay | 估算 |
证据来自何处。
具名公共数据集与机构记录，各自注明许可类别。依协议获得的来源仅按其条款使用，绝不再次发布。
| 来源 | 它提供什么 | 许可类别 |
|---|---|---|
| UN Comtrade (HS headings 8541 and 8542) | Trade in semiconductor devices and integrated circuits | Free access with limits, UN terms |
| OECD studies of the semiconductor value chain | Structure, concentration and policy analysis | Public, OECD terms |
| WSTS public summaries | Industry sales by region and product category | Public summaries; full data members only |
| Government export control notices | Rules restricting trade in chips and equipment | Public records, licence per government |
| Academic and think-tank value chain mappings | Supplier shares at each step | Licence per publication (to check) |
由谁决定，以及证据服务于什么。
Trade and Strategic Resources prepares evidence. The decisions below are taken by the authorities named, under their own rules, and never by the platform.
| 谁来决定 | 问题 | 本页面服务的证据 |
|---|---|---|
| Ministries of industry and technology | Which value chain steps to support domestically or with partners | Value chain maps; concentration evidence |
| Critical sector operators | Which components to stockpile or qualify from second sources | Downstream dependency analyses |
| Trade and security authorities | How export controls affect domestic supply | Export control evidence; trade data |
该主题产生的产出
- Value chain maps showing concentration at each step
- Hazard exposure overlays for fabrication sites
- Downstream dependency analyses for critical sectors
- Evidence notes on export control changes
What experts ask about semiconductor supply.
- At which stages of the chain is capability concentrated in few firms or locations?
- Which specialised inputs, such as high-purity gases, chemicals and wafers, are single-sourced?
- How long would it take to replace lost fabrication capacity?
- Which downstream sectors are most exposed to shortages of mature or advanced chips?
- How do export controls and industrial policies change the structure of the chain?
Why the chain is fragile.
Semiconductor manufacturing requires extreme precision, very large capital investment and accumulated know-how. Leading-edge fabrication plants take years to build and need specialised equipment from a handful of suppliers. These barriers favour concentration: each stage tends to have few capable players, and the stages are spread across different regions.
Shortages propagate widely because chips are embedded in so many products. Even inexpensive, mature-node chips can halt the production of much more valuable goods when they are missing. Long lead times and the difficulty of switching suppliers, since chips must be qualified for each product, slow recovery.
Other components share similar features: specialised capacitors, displays, sensors and advanced materials often depend on few producers and on inputs such as rare gases or high-purity minerals.
方法及其局限。
- 01
Supply chain mapping
Tracing firms and locations at each production stage. Commercial confidentiality limits visibility beyond the first tiers.
- 02
网络分析
Identifying central nodes and single points of failure using 网络科学. Firm-level links are often incomplete.
- 03
Materials and process research
Understanding critical inputs and alternatives using materials science and chemistry.
- 04
投入产出分析
Estimating sector exposure to component shortages. Tables are aggregated and published with delay.
The industry changes quickly, and analyses state the date and sources of the information used.
Where this page’s references lead.
阅读本页时所对照的机构和文件。状态和版本会变化；每个链接都指向发布机构。
问题与解答。
Why are semiconductor supply chains fragile?
What is a fab?
Do mature chips matter?
Does the platform assess individual chip makers?
Are export controls analysed?
Why do mature chips matter?
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