The effort to separate semiconductor supply chains between China and the United States is proving more complicated than simply moving factories from one country to another. Today’s developments around SK hynix illustrate why.

SK hynix is reportedly seeking U.S. approval to bring additional American semiconductor manufacturing equipment into its Dalian, China NAND facility while linking that request to plans for a potential new NAND factory in the United States through its Solidigm subsidiary. The Dalian facility contains unused manufacturing space that could support additional production, while a new U.S. facility would expand domestic NAND capacity.

The situation demonstrates how deeply integrated the semiconductor industry remains, even as governments pursue greater regional independence.

Why Semiconductor Supply Chains Are Difficult to Separate

A modern semiconductor manufacturing network is not confined to one country. Companies can design products in one region, manufacture wafers in another, source equipment from several countries, package components elsewhere, and distribute finished products globally.

SK hynix’s Dalian operation is a useful example. The facility originated through the company’s acquisition of Intel’s NAND and SSD business and became part of its broader NAND manufacturing network. (SK hynix)

That creates dependencies that are difficult to unwind quickly. Moving production requires more than constructing a new facility. Equipment must be installed, processes must be qualified, production must reach acceptable yields, and customers must approve the resulting products.

Export Controls Are Changing Investment Decisions

U.S. export controls have added another layer of complexity. In 2025, the Commerce Department removed the license-free VEU authorization that had applied to foreign-owned semiconductor fabs in China. The department said licenses would generally support existing operations but would not be granted for capacity expansion or technology upgrades. (BIS)

That policy creates an unusual planning environment for companies operating across both markets.

A manufacturer may have productive assets in China that remain economically valuable while simultaneously being encouraged to build additional capacity in the United States. The challenge is determining how to operate the existing footprint while developing a second regional supply base under changing regulatory conditions.

SK hynix has stated that equipment installation at its Dalian Mod B facility is proceeding in consultation with and under authorization from the U.S. government, and that it is not seeking to expand capacity there. That position is important because the reported proposal and the company’s public characterization of the project are not identical.

The Economics of Maintaining Multiple Footprints

Regional diversification can improve resilience, but it also creates additional costs and complexity.

Operating facilities across multiple countries means managing different regulatory environments, supplier networks, logistics routes, labor markets, equipment requirements, and qualification processes. Companies must also determine which products should be manufactured in each location and how much redundancy is economically justified.

For NAND manufacturers, the decision is particularly significant because production capacity is expensive and takes years to develop. Leaving existing capacity underutilized can be inefficient, but expanding it may conflict with regulatory restrictions.

This is why semiconductor decoupling is unlikely to happen as a clean separation. Companies are more likely to build overlapping supply networks while continuing to use portions of their existing global footprint.

What This Means for Semiconductor Buyers

OEMs and EMS providers are affected by these decisions even when they have no direct involvement in fab operations.

Changes in manufacturing locations can affect supplier qualification, country of origin, lead times, allocation, logistics, and the availability of specific NAND products. A component that appears to have multiple sources may still depend on the same underlying manufacturing network or equipment ecosystem.

For long lifecycle programs, those dependencies deserve particular attention. Companies may need to understand not only who supplies a component, but where it is manufactured, which facilities support it, and whether alternative production locations are actually qualified.

Inventory planning can provide another layer of flexibility during these transitions. Qualified components, wafers, or die can be secured and maintained in controlled storage while manufacturing footprints and supply arrangements evolve. This can be particularly relevant when moving between suppliers or production regions requires lengthy qualification.

A More Complicated Path to Semiconductor Independence

The latest SK hynix situation illustrates why semiconductor decoupling is difficult to execute in practice. Governments can restrict equipment exports and encourage domestic investment, but companies still have to manage existing factories, installed equipment, customer commitments, production economics, and global supply relationships.

The result is likely to be less of a clean separation and more of a gradual restructuring. Production will become more geographically diversified, but existing facilities and supplier relationships will not necessarily disappear.

For semiconductor buyers, understanding that transition is important. Regional diversification can create new sources of resilience, but it can also introduce new layers of complexity that need to be accounted for in sourcing, qualification, and inventory planning.

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North American electronics manufacturing is showing strong demand, but manufacturers are not converting that demand into shipments at the same pace. The latest industry data shows EMS bookings increased 53.5% year over year in August, while shipments increased only 1.0%. The three-month book-to-bill ratio reached 1.39, indicating that orders are running well ahead of billed shipments. (electronics.org)

The numbers suggest a healthy pipeline of future production, but they also raise an important question: what is preventing manufacturers from converting more of those orders into finished products?

What a 1.39 Book-to-Bill Ratio Actually Means

The book-to-bill ratio compares the value of orders received with the value of products shipped and billed over the same three-month period. A ratio above 1.00 indicates that orders are running ahead of shipments.

At 1.39, the value of orders booked was approximately 39% higher than billed shipments during the period. The ratio does not mean that manufacturers are 39% behind on every order, but it does indicate that incoming demand is accumulating faster than shipments are moving through the system.

The trend is also broader than a single month. Year-to-date EMS bookings were up 15.5%, while shipments increased 1.0%. The three-month moving averages show bookings up 9.0% and shipments up 2.4%.

Why Orders Do Not Become Shipments Immediately

A strong order book does not automatically translate into immediate production. EMS companies must secure components, materials, boards, labor, manufacturing capacity, and other inputs before an order can become a completed product.

Component availability can be particularly important. Extended supplier lead times can prevent manufacturers from completing otherwise viable orders, leaving work in the production pipeline until the necessary parts arrive. Current industry reporting also points to tighter availability across certain component categories and longer lead times as factors limiting how quickly EMS companies can convert orders into deliveries. (emsnow.com)

This creates an important distinction between demand and fulfillment. A manufacturer can have a strong backlog without having everything necessary to complete that backlog.

The Component Level Matters

The headline EMS numbers provide a useful market indicator, but they do not explain which components are creating delays.

An order for an electronic assembly may depend on hundreds or thousands of individual components. Most may be readily available while a small number of constrained parts determine when the entire assembly can ship.

Those bottleneck components can include semiconductors, memory, power devices, connectors, passive components, sensors, or other qualified parts. The impact can also vary by exact MPN, specification, supplier, and approved alternative.

This is why aggregate component availability can be misleading. A category may appear healthy while a specific qualified component remains difficult to obtain.

What the Numbers Mean for OEM Planning

For OEMs, strong EMS bookings provide a positive signal for future production. They also highlight the importance of understanding what sits behind an EMS order.

If demand continues to outpace shipments, manufacturers will need to distinguish between orders that are fully supported by available components and orders that depend on parts with extended lead times or uncertain availability.

That distinction can affect production schedules, customer commitments, working capital, and inventory requirements.

A separate September survey of the broader electronic component industry also showed improving sentiment, with its overall component index rising from 136.7 in August to 142.0 in September. This suggests that the stronger EMS order environment is occurring alongside generally positive expectations across the component market. (ecianow.org)

Where Inventory Fits Into the Conversion Gap

When a specific component is preventing an order from becoming a shipment, inventory can influence the timing of production.

For confirmed requirements, manufacturers may choose to secure critical components ahead of their production window rather than relying entirely on deliveries that arrive shortly before assembly. This is particularly relevant when components have long lead times, limited approved alternatives, or extended qualification requirements.

Once secured, however, inventory needs to remain usable. Semiconductors and electronic components can be affected by moisture, electrostatic discharge, temperature variation, contamination, and handling conditions. Controlled storage helps preserve components while maintaining traceability and inventory visibility.

This creates a connection between procurement and fulfillment that is easy to overlook. Having a component available in the supply chain is not enough if it cannot be delivered, preserved, and released when the production schedule requires it.

Reading the EMS Market Beyond Bookings

The latest North American EMS data points to strong underlying demand, but the gap between orders and shipments deserves equal attention.

Bookings indicate what customers want manufacturers to build. Shipments show what manufacturers are actually completing and delivering. When the two diverge significantly, the difference can reveal capacity constraints, component availability issues, lead time pressure, or other obstacles between an order and a finished product.

For OEMs and EMS providers, that makes the book-to-bill ratio more than a measure of demand. It is also a useful indicator of how much future production is moving into the pipeline and how effectively the industry is converting that demand into finished electronics.

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Murata is discontinuing selected MLCC part numbers across nine product series, creating a significant lifecycle planning issue for manufacturers that depend on those exact components. The affected products span general purpose, automotive, and other applications. Customers can place final orders through March 31, 2028, with final shipments scheduled for March 31, 2029.

The extended timeline gives manufacturers an opportunity to qualify alternatives or purchase enough inventory to support remaining production and service requirements. However, that window may be shorter than it appears for products with lengthy engineering and qualification processes.

What the Discontinuation Actually Means

This is not a broad withdrawal from the MLCC market. Murata continues to offer extensive ceramic capacitor lines across consumer, industrial, automotive, and medical applications. The change involves selected part numbers within several product families as the company adjusts its portfolio and manufacturing priorities. (Murata)

That distinction is important for procurement teams. A supplier can continue producing an entire series while discontinuing a specific capacitance, voltage rating, case size, dielectric, tolerance, or other configuration required by a particular design.

For an OEM, the relevant question is therefore not whether Murata will continue making MLCCs. It is whether the exact MPN specified on the bill of materials will remain available for the duration of the program.

Why Replacing an MLCC Is Not Always Simple

MLCCs are relatively inexpensive components, but their role in a qualified design can make them difficult to replace.

An alternative may need to match more than capacitance and voltage. Case size, dielectric characteristics, tolerance, temperature performance, termination, reliability specifications, and other electrical characteristics can all affect whether a replacement is acceptable.

The qualification burden can be even greater in automotive, aerospace, medical, and industrial applications. A replacement may require engineering analysis, testing, supplier approval, documentation updates, and customer qualification before it can enter production.

That creates a meaningful difference between finding an electrically similar capacitor and finding an approved replacement that can actually be used.

The Market Is Also Shifting Toward Higher Value MLCCs

Murata’s portfolio changes are taking place alongside a broader shift in the MLCC market. Demand for high-end, high-capacitance components has increased as AI servers, data centers, automotive electronics, and advanced computing systems require more sophisticated power and signal management.

At the same time, suppliers are adjusting capacity toward products with stronger demand and higher margins. Recent market analysis indicates that some Japanese and Korean manufacturers are reducing their exposure to lower-margin consumer and automotive MLCCs while directing more capacity toward higher-end applications. (TrendForce)

That does not mean every conventional MLCC is becoming difficult to source. It does mean that manufacturers should pay closer attention to individual part numbers rather than assuming that category-level availability reflects the situation for every qualified component.

What OEMs Should Review

An EOL notice should trigger a lifecycle review rather than an automatic decision to place the largest possible last-time buy.

Manufacturers should first determine current consumption, remaining production requirements, service obligations, and the date by which the existing component will no longer be available. They should then evaluate whether an approved alternative exists and how long qualification would take.

The review should include:

• Exact MPN and specification
• Current annual consumption
• Remaining production requirements
• Service and aftermarket demand
• Approved alternate components
• Qualification and validation timelines
• Last-time-buy requirements
• Required storage duration

This approach helps distinguish between components that require a substantial inventory commitment and those that can be transitioned to an approved alternative.

The Role of Long Term Component Storage

When an approved replacement is unavailable or qualification cannot be completed within the available timeframe, a last-time buy may be necessary to support the remaining product lifecycle.

That creates another consideration: how the inventory will be preserved.

MLCCs and other electronic components require appropriate environmental conditions, handling, traceability, and inventory controls when they are stored for extended periods. A last-time buy that sits for several years should remain identifiable, protected, and suitable for production or service use when required.

Controlled semiconductor and electronic component storage can provide that environment while maintaining inventory visibility and documented custody.

For confirmed requirements, securing qualified inventory through authorized channels and holding it under controlled conditions can provide a bridge between a manufacturer’s final production date and the end of the product’s service requirements.

Why Exact MPN Visibility Matters

Murata’s decision illustrates a broader issue in component lifecycle management. Product families can remain active while individual part numbers disappear from the market.

That means category-level supply information is not enough for manufacturers managing long-lived products. Procurement teams need visibility into the exact components on their bills of materials, their remaining production requirements, available alternatives, and the time required to qualify those alternatives.

For OEMs and EMS providers, effective lifecycle planning starts with that level of specificity. The earlier a manufacturer understands that a qualified MPN is approaching end of life, the more options remain for managing the transition without disrupting production or long-term service support.

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The traditional strategy of increasing imports before a tariff takes effect has become more complicated for companies purchasing polysilicon and covered derivatives in the United States. A new Commerce Department rule, effective September 22 through December 3, gives the government authority to restrict additional imports when company volumes indicate that material is being stockpiled ahead of the December 4 implementation of new Section 232 measures.

The development is significant because the government is not simply changing the cost of imported polysilicon. It is actively monitoring purchasing behavior during the period before the new measures take effect.

How the New Restrictions Work

Commerce is comparing current import activity with historical volumes to identify companies whose purchases are substantially above their normal levels. Existing importers identified as stockpiling can be prohibited from making additional entries before December 4, although the rule provides a waiver process.

Companies that became new importers of record after August 6 face specific weekly limits unless Commerce approves a waiver. The limits vary by covered HTSUS classification and include quantities as low as 7 kilograms for certain polysilicon derivative classifications.

The rule also directs customs brokers to consider ownership, import behavior, and the ultimate consignee when evaluating new importers. Commerce has specifically stated that arrangements designed to circumvent the restrictions can result in enforcement action.

This makes importer history, product classification, ownership structure, and intended use important considerations for companies planning purchases before December 4.

What Changes on December 4

The restrictions are designed to bridge the period before a broader Section 232 regime takes effect.

Beginning December 4, covered polysilicon will be subject to minimum import prices, including $21 per kilogram for polysilicon and $100 per kilogram for polysilicon ingots and wafers. Certain covered derivatives will also face an additional 15% tariff, subject to country-specific provisions and other requirements.

The policy is intended to create a more commercially viable environment for U.S. polysilicon production while reducing dependence on foreign supply. The administration has also authorized incentives for companies that establish or expand domestic polysilicon, ingot, wafer, and cell production.

For buyers, however, the immediate issue is the transition period between today’s import environment and the new December requirements.

Why Classification and Import History Matter

The new framework creates a distinction between buying inventory for legitimate commercial demand and increasing imports primarily to avoid future pricing measures.

That distinction requires companies to examine their specific circumstances rather than assuming that additional pre-tariff inventory can be imported without restriction. HTSUS classification, importer-of-record history, historical purchasing volumes, country of origin, supplier contracts, intended use, and documentation can all affect how an import is treated.

The rule also makes clear that the restrictions apply specifically to polysilicon products and covered derivatives. It does not establish a blanket restriction on semiconductor inventory.

That distinction is important for OEMs and EMS providers whose concern is the potential downstream effect on semiconductor and electronics costs.

Potential Effects Further Down the Supply Chain

Polysilicon sits at the beginning of the semiconductor manufacturing chain. The August Section 232 proclamation identifies it as the base material for semiconductor production and links domestic polysilicon availability to U.S. semiconductor manufacturing capacity.

Higher polysilicon and wafer costs could therefore influence downstream pricing, although the effect will vary considerably by product, supplier, contract structure, classification, and the amount of polysilicon exposure embedded in the finished component.

It would be premature to assume that the policy will create shortages across semiconductor markets. The more immediate concern is increased cost and uncertainty around specific supply chains exposed to covered materials.

Where Inventory Strategy Still Applies

The new restrictions also illustrate why inventory strategy needs to distinguish between upstream raw materials and finished, production-qualified components.

For companies with confirmed requirements, securing qualified semiconductors, assemblies, modules, or other finished products through authorized channels can provide a way to manage potential downstream cost increases without attempting to stockpile restricted polysilicon itself. An inventory ownership structure can fund and hold that physical inventory, preserve it under controlled conditions, and schedule releases against documented production requirements.

That approach does not bypass the Commerce restrictions or eliminate the need for accurate classification and import compliance. Where covered polysilicon products are involved, any purchase should be based on legitimate commercial demand, appropriate documentation, and any required Commerce approval.

Planning Through the December Transition

The period between September 22 and December 3 creates an unusual procurement environment. Companies are preparing for higher minimum import prices and additional duties while Commerce is simultaneously monitoring whether current import activity represents stockpiling.

For OEMs and EMS providers, the most important consideration is understanding exactly where polysilicon exposure exists within the supply chain. That means identifying affected classifications, reviewing supplier contracts, assessing potential downstream cost exposure, and separating legitimate production requirements from speculative inventory accumulation.

The new rule does not eliminate the value of inventory planning. It makes the distinction between compliant supply assurance and restricted stockpiling much more important.

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