GlobalFoundries and TSMC have announced a manufacturing agreement for silicon interposers in the United States, with the work anchored at GlobalFoundries' site in Malta, New York. The two companies confirmed the deal in a joint announcement, placing a critical advanced-packaging component into U.S. production.

Silicon interposers sit at the center of modern 2.5D packaging architectures. These thin silicon substrates carry dense arrays of through-silicon vias and fine-pitch wiring that connect logic dies and high-bandwidth memory stacks on a single package. Chip designers rely on them to link processors and memory at bandwidth levels that conventional organic substrates cannot support.

Who signed the agreement?

The agreement pairs two established semiconductor manufacturers. TSMC operates as the world's largest contract chipmaker and has expanded its U.S. footprint with facilities in Arizona. GlobalFoundries runs its most advanced U.S. manufacturing hub in Malta, in Saratoga County, New York, a site the company has operated and expanded for over a decade.

Under the arrangement, silicon interposer manufacturing will take place at the Malta location. This ties TSMC's packaging ambitions to a fab campus that already serves U.S. government and commercial customers with mature-node and specialty process technology.

What does the agreement cover?

The announcement specifies silicon interposers as the product category at the center of the deal. The companies disclosed the product focus and the manufacturing location in their statement.

Key elements of the announced agreement:

• Parties: GlobalFoundries and TSMC.
• Product: Silicon interposers for advanced packaging.
• Location: Malta, New York, United States.
• Nature: A manufacturing agreement between the two companies.

The announcement frames the deal as U.S.-based manufacturing. Beyond the product category and site, the companies have not detailed production volumes, capacity targets, equipment plans, or a start date for output in the information released so far.

Why do interposers matter?

Interposer supply has become a constraint question across the industry as chip designers shift toward chiplet-based architectures. Packaging capacity, not just wafer fabrication, now determines how quickly high-performance processors reach customers.

By locating interposer manufacturing in Malta, the agreement adds domestic capacity in a segment where U.S.-based production has been limited. It also connects two companies that serve largely different segments of the market: TSMC dominates leading-edge logic fabrication, while GlobalFoundries focuses on specialty and mature process nodes.

The deal gives GlobalFoundries a role in a higher-integration packaging segment. For TSMC, it extends manufacturing relationships into an established U.S. fab location outside its own domestic build-out.

What remains open?

Several commercial and technical questions remain unanswered in the announcement. The companies have not specified:

• Contract duration or volume commitments.
• Which interposer formats or design rules the Malta line will support.
• Investment amounts tied to the agreement.
• Timeline for first production or qualification.
• Whether the arrangement covers additional advanced-packaging steps beyond interposers.

Context for the Malta site

GlobalFoundries has positioned its Malta campus as a strategic U.S. manufacturing asset, with prior commitments tied to domestic semiconductor investment programs. The company has expanded capacity at the site in recent years and has pursued long-term supply agreements with automotive, aerospace, and government customers.

Adding silicon interposer manufacturing to the site's portfolio would place packaging-critical technology alongside the fab's existing process offerings. The agreement signals cooperation between two major foundries on U.S. soil, an arrangement uncommon in an industry where leading-edge packaging capacity has concentrated in Asia.

What comes next?

Industry observers will watch for follow-on details: capital expenditure figures, hiring plans in Saratoga County, customer commitments for Malta-built interposers, and qualification milestones. Any of those disclosures would clarify the scale of the arrangement and its weight in the broader advanced-packaging supply chain.

For now, the announcement establishes the core facts: GlobalFoundries and TSMC have agreed to manufacture silicon interposers in Malta, New York, bringing a critical packaging component into U.S. production through a direct foundry-to-foundry agreement.