NVIDIA AI Manufacturing Scale-Up: Electronicseng Semiconductors Guide to Substrate, Packaging, Test and Optics Capacity

At Electronicseng's Semiconductors desk, this NVIDIA capacity plan is treated as a manufacturing readiness package rather than a product launch. It connects package substrates, advanced packaging, semiconductor test and optical-engine output to accelerated computing and the full-stack AI factory platform. The value for engineers, buyers and analysts is the schedule of reservations, site upgrades and ramp dates that show where supply pressure may be eased over time.

Plan summary for semiconductor analysts

NVIDIA has unveiled a plan with supply chain partners to broaden global manufacturing capacity. The plan sets substrate capacity to grow 2.5x in three years, and it also expects semiconductor testing capacity to double from 2026 to 2027. The named partners are Amkor Technology, IBIDEN, King Yuan Electronics (KYEC), Samsung Electro-Mechanics, Siliconware Precision Industries (SPIL) and Unimicron Technology Corporation. The work covers substrates, advanced packaging, testing and optical engines, strengthening the resiliency and redundancy of NVIDIA's global supply chain.

From a back-end manufacturing perspective, the program is not a single plant announcement. It combines capacity reservation advances, existing Korean substrate operations, upgrades in Sejong and Busan, new U.S. testing facilities, Singapore testing operations and Taiwan-based substrate and optical-engine expansion, along with advanced packaging development in South Korea and the Ono Plant in Japan.

Capacity comparison by semiconductor segment

Segment	Stated capacity direction	Relevant milestone	Supplier or site reference
Package substrate	2.5x growth over the next three years; IBIDEN Ono Plant expansion aims for 3x current levels	first quarter of 2028 ramp; second quarter of 2027 added capacity; mid-2028 full capacity	IBIDEN, Samsung Electro-Mechanics, Unimicron Technology Corporation, also called Unimicron
Advanced packaging	greater than 300% interposer wafer capacity increase	by the end of 2028	Amkor Technology, referenced as Amkor in the packaging plan
Semiconductor testing	total testing capacity expected to double from calendar 2026 to 2027	April 2027 and February 2027 high-volume production targets	King Yuan Electronics (KYEC), KYEC, U.S., Taiwan, Singapore
Co-packaged optics	15x optical engine capacity, with another doubling stated	mid-2027 and by the end of 2028	Siliconware Precision Industries (SPIL), SPIL, Taiwan

Substrate capacity: the first bottleneck to watch

NVIDIA intends to lift substrate capacity for its products by 2.5x over the next three years, and the agreements described in the plan are intended to help drive that expansion. IBIDEN is tied to the Ono Plant in Japan through an agreement signed and announced earlier this year. That agreement extends a multibillion-dollar capacity reservation advance to support the plant. The expansion aims for capacity reaching 3x current levels, and additional capacity is expected to begin ramping in the first quarter of 2028.

Samsung Electro-Mechanics joins the substrate supply chain by contributing immediate capacity from existing operations in South Korea. The collaboration also backs facility upgrades and new factories in Sejong and Busan, South Korea. By 2028, production allocated to NVIDIA is projected to represent a significant portion of Samsung Electro-Mechanics' total annual package substrate production capacity.

NVIDIA is also backing Unimicron Technology Corporation, also shortened as Unimicron, in the KF substrate manufacturing expansion in Taiwan through a capacity reservation agreement. That expansion is expected to begin adding capacity in the second quarter of 2027 and reach full capacity by mid-2028. For package-level planners, these dates form the substrate-side timeline: Japan ramp reference in the first quarter of 2028, Taiwan added capacity in the second quarter of 2027 and full capacity at mid-2028.

Advanced packaging, test and optics: where the plan becomes concrete

NVIDIA and Amkor intend to expand advanced packaging capacity in South Korea, targeting a greater than 300% increase in interposer wafer capacity by the end of 2028. The planned capacity expansion, together with Amkor's development of new manufacturing facilities in South Korea, supports higher production volumes for current and next-generation platforms. Amkor Technology appears in the partner list, while Amkor is the shorter operating reference used for the packaging plan.

NVIDIA expects its total semiconductor testing capacity to double from calendar 2026 to 2027, with buildouts in the U.S., Taiwan and Singapore providing support. The $1.1 billion capacity reservation advance to King Yuan Electronics (KYEC), abbreviated KYEC, will support new U.S. testing facilities and equipment. High-volume production is targeted for April 2027. Expanded testing operations in Singapore are expected to begin high-volume production in February 2027. The effort also strengthens US manufacturing.

NVIDIA and Siliconware Precision Industries (SPIL), shortened as SPIL, intend to expand manufacturing capacity in Taiwan for optical engines used in co-packaged optics. The expansion targets an increase of 15x by mid-2027, with aims for another doubling by the end of 2028. This is the connectivity-side element of the plan, and it should be read alongside the packaging and test milestones rather than as a separate news item.

Checklist for engineering and procurement teams

• Map package substrate demand against the stated 2.5x capacity goal over the next three years, especially for programs that depend on advanced packaging throughput.
• Track IBIDEN's Ono Plant ramp reference in the first quarter of 2028 when planning Japanese substrate availability.
• Assess Samsung Electro-Mechanics' Sejong and Busan upgrades as South Korea capacity references, with By 2028 allocation language as a monitoring point.
• Watch Unimicron's KF expansion in Taiwan using two checkpoints: second quarter of 2027 for added capacity and mid-2028 for full capacity.
• Evaluate advanced packaging exposure through the greater than 300% interposer wafer capacity target by end of 2028.
• Align test capacity plans with semiconductor testing capacity expected to double from calendar 2026 to 2027, including US, U.S., Taiwan and Singapore buildouts.
• Include optical engines in platform connectivity planning around the 15x expansion by mid-2027 and the stated another doubling by end of 2028.

Data reference for capacity anchors

To keep the article anchored to the published plan, this section lists the numeric and timing references without reinterpretation. The core targets are 2.5x, double, 3x, greater than 300%, $1.1 billion and 15x. The core timing references include three years, the next three years, from 2026 to 2027, from calendar 2026 to 2027, earlier this year, first quarter of 2028, By 2028, second quarter of 2027, mid-2028, end of 2028, April 2027, February 2027, mid-2027 and another doubling. The multibillion-dollar support reference applies to the IBIDEN capacity reservation advance.

Common misconceptions to avoid

• A reader might mistake 2.5x for a guarantee that every substrate supplier doubles and then some; the published plan states substrate capacity growth over the next three years across partners, not a uniform supplier-level multiplier.
• A reader might treat the double from calendar 2026 to 2027 as simultaneous conversion of all test capacity; the plan ties the direction to buildouts in the U.S., Taiwan and Singapore, with named high-volume production targets in April 2027 and February 2027.
• A reader might assign the 3x figure to every site; in the master plan, the 3x reference is tied to IBIDEN's Ono Plant expansion aims.
• A reader might blend packaging, testing and optics into one capacity number; the greater than 300% interposer wafer figure, the testing double direction and the 15x optical-engine target describe different manufacturing stages.
• A reader might treat another doubling as a new separate capacity program; it is stated as a follow-on aim tied to optical engines used in co-packaged optics.

Action recommendations

1. For hardware teams: use the named milestones — first quarter of 2028, second quarter of 2027, mid-2028, April 2027, February 2027 and mid-2027 — to create supplier risk calendars for package substrate, semiconductor test and optical engine readiness.
2. For procurement: treat the $1.1 billion capacity reservation advance to King Yuan Electronics (KYEC), and the multibillion-dollar support for IBIDEN's Ono Plant, as evidence that capacity reservations are being used to shape supply availability.
3. For design managers: factor the greater than 300% interposer wafer expansion and the 15x optical-engine expansion into future platform connectivity plans, because the published plan ties them to current and next-generation platforms.
4. For analysts: monitor whether NVIDIA, Amkor, IBIDEN, KYEC, Samsung Electro-Mechanics, SPIL and Unimicron convert the stated plan into production through Japan, South Korea, Taiwan, US manufacturing and Singapore, while tracking the 2.5x substrate goal and the double from 2026 to 2027 test-capacity direction.

FAQ

What is the main semiconductor manufacturing signal?

The signal is capacity reservation across substrates, advanced packaging, testing and optical engines, with a 2.5x substrate goal over three years and semiconductor testing capacity expected to double from 2026 to 2027.

Which companies are named?

Amkor Technology, IBIDEN, King Yuan Electronics (KYEC), Samsung Electro-Mechanics, Siliconware Precision Industries (SPIL) and Unimicron Technology Corporation.

Which regions are involved?

Japan, South Korea, Taiwan, US manufacturing and Singapore; the U.S. is explicitly connected to new testing facilities and equipment.

How should Electronicseng readers use the dates?

Use them as monitoring milestones. The plan states additional IBIDEN capacity beginning to ramp in the first quarter of 2028, Unimicron capacity adding in the second quarter of 2027 and full capacity by mid-2028, KYEC U.S. high-volume production targeted for April 2027, Singapore high-volume production expected in February 2027, and optical engines expanding by mid-2027 with another doubling by end of 2028.

Electronicseng's Semiconductors view: this plan gives the engineering community a more concrete capacity map than a general expansion headline would. The stated anchors — 2.5x, double, 3x, greater than 300%, $1.1 billion and 15x — are most useful when connected to specific milestones such as the first quarter of 2028, mid-2027, April 2027, February 2027 and end of 2028. Readers should judge impact by whether NVIDIA, Amkor, IBIDEN, KYEC, Samsung Electro-Mechanics, SPIL and Unimicron convert reserved capacity into stable production across Japan, South Korea, Taiwan, US and Singapore.