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Companies can reduce reliance on one semiconductor supplier by mapping dependencies down to the part and production-process level, qualifying alternatives that are both technically suitable and genuinely independent, and using inventory or regional options to bridge remaining risk. Simply adding a second vendor to a supplier list is not enough: both vendors may rely on the same fab, upstream source, assembly site, or transport route.

Why a second supplier may not eliminate the risk

Semiconductor supply can be concentrated at several points: chip production, assembly and testing, materials, utilities, and transport. Two suppliers may have different names but share a parent company, production region, upstream supplier, or packaging and test provider. The useful question is therefore not only “How many suppliers do we have?” but “Which independent paths can deliver this specific part to our product?”

The scale of geographic concentration has been substantial, though published figures must be read with their dates and definitions. A 2021 Semiconductor Industry Association (SIA) and Boston Consulting Group (BCG) report summary found more than 50 value-chain points at which one region held over 65% of global market share; it also reported that about 75% of global semiconductor manufacturing capacity was in China and East Asia. Separately, the U.S. Government Accountability Office (GAO), in a report published in 2025 using 2022 data, said about three-quarters of chips were manufactured and packaged in Asia. These are dated, differently scoped findings—not current measures of every chip or company’s exposure.

Geographic concentration can leave supply exposed to natural disasters, infrastructure shutdowns, geopolitical conflict, and trade disputes. A supplier’s location alone does not establish resilience: its actual production footprint and sub-tier dependencies matter.

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How to identify which parts deserve attention first

Map the chip and its dependencies

Start with a bill-of-materials view of the chips used in critical products and services. For each part, record what is known about:

  • Manufacturer, product family, and process node.
  • Fab or production geography, plus assembly and test locations.
  • Known upstream dependencies, such as shared production sites or suppliers, and any overlapping logistics routes.
  • Whether the part is sole-sourced, its lead time, lifecycle notices, and the availability of a technically suitable alternative.
  • The product, shipment, or service affected if the part cannot be obtained.

Some details may be difficult to obtain. The U.S. Department of Commerce’s 2022 semiconductor supply-chain fact sheet identifies limited supply-chain transparency, single sourcing, and regional overreliance as risks. Record unknowns as unknowns rather than treating a supplier’s location or a second vendor name as proof of independence.

Rank by business consequence, not vendor count

Prioritize parts based on how quickly a shortage would interrupt shipments or service, whether the product can be redesigned, and how long an alternate would take to qualify. A chip with one supplier may be manageable if the impact is limited and replacement is feasible; another may warrant immediate attention if its absence stops a critical product and qualification would take substantial time. The cited government and industry sources establish general concentration risks, but do not provide a universal scoring formula. Set the ranking around the specific part, product, and customer requirements.

How to find and qualify a genuine second source

Ask engineering and procurement to assess candidates together. A supplier’s assurance that a part is similar—or a different company name—does not establish that it is interchangeable or independently produced.

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  1. Define product requirements. Identify the electrical, thermal, package, firmware or software, reliability, regulatory, and customer-approval requirements that apply to the end product.
  2. Check technical fit. Have the relevant engineering teams determine whether the candidate meets those requirements and what redesign, testing, or customer approval would be needed. Do not assume a second-source chip is a drop-in replacement.
  3. Trace the candidate’s supply path. Check ownership, production sites, upstream sources, assembly and test providers, and transport dependencies where information is available. A supplier in another region may still share an important exposure with the incumbent.
  4. Establish qualification and continuity conditions. Confirm the candidate’s ability to support the required production, the time and work needed to qualify it, and how continuity would be managed if demand or supply changed.
  5. Document what is qualified. Record the approved part, product and customer scope, relevant production path, and any conditions on use. A qualified alternative for one application is not automatically qualified for every product.

Commerce’s 2022 fact sheet and the GAO’s supply-chain analysis describe the risks that make diversification valuable; neither makes technically different chips interchangeable. Qualification has to be specific to the intended use.

How to compare viable alternatives

Once candidates pass an initial technical screen, compare them across the factors below. Weight them according to the part’s business impact and the application’s requirements; the cited sources do not prescribe a universal weighting.

Comparison factor Questions to ask
Technical and customer qualification Does the part meet the application’s requirements? What testing, redesign, regulatory review, or customer approval is needed, and how long could it take?
Capacity and continuity Can the supplier support the needed production, and what is known about lead-time continuity and lifecycle status?
Independence Are ownership, fabs, upstream dependencies, assembly and test, and logistics genuinely distinct from the incumbent’s?
Total cost How do component and operating costs compare, including the cost of qualification and any required product changes?
Infrastructure and disruption exposure Are the production path and transport routes exposed to overlapping regional, utility, infrastructure, or disaster risks?
Ecosystem and lifecycle Is there a surrounding base of suppliers, customers, R&D partners, and talent? How could lifecycle or obsolescence affect continued availability?

SIA/BCG identifies investment and operating costs and the strength of integrated ecosystems as important considerations in semiconductor investment decisions. Those factors complement technical suitability and continuity; a low quoted component price by itself does not show that a source reduces overall exposure.

What to do while an alternate is being qualified

Inventory can provide a bridge through some disruptions or qualification periods, but it does not create a second source. Set any buffer or last-time-buy decision using the part’s demand variability, lifecycle, storage and obsolescence exposure, working-capital constraints, and the time required to qualify an alternative. No universal safety-stock quantity is established by the cited sources, so a target should be specific to the company’s part and risk.

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Inventory, supplier qualification, and dependency mapping address different problems: stock may buy time, qualification creates an approved alternative, and mapping helps reveal whether that alternative is exposed to the same interruption. Treating one as a substitute for the others can leave a critical weakness unresolved.

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When regional or domestic sourcing can help

Broadening the production footprint can reduce exposure to a disruption concentrated in one region, but a regional supplier does not guarantee an independent supply chain or solve every company’s part-specific needs. Capacity and ecosystem development are longer-term resilience levers, not immediate replacements for qualification and continuity planning.

In its 2024 summary, SIA/BCG projected U.S. fab capacity would increase by 203% by 2032 and the U.S. share of global capacity would rise from 10% to 14%. These are forecasts, not completed capacity changes or proof that a particular chip has a regional alternate. Vulnerabilities remain.

The limits and costs of self-sufficiency also matter. SIA/BCG’s 2021 scenario analysis estimated that fully self-sufficient regional supply chains could require at least $1 trillion in incremental upfront investment and raise semiconductor prices by 35% to 65%. Those figures describe a hypothetical industry-level scenario, not a company-specific estimate. A practical strategy is to broaden viable supply paths where it makes sense rather than assume that every stage can or should be localized.

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Who needs to be involved

Supplier resilience is not solely a procurement task. Engineering evaluates technical fit and qualification; procurement examines supplier and commercial conditions; operations assesses continuity and inventory; and product or customer teams clarify downstream requirements. The U.S. Department of Commerce’s December 21, 2023 announcement of a survey into legacy-chip sourcing quoted Secretary of Commerce Gina Raimondo: “Government alone cannot create and sustain a robust supply chain – we need industry at the table.” In practice, company-level decisions about product requirements and approved alternatives are part of that industry role.

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