What GT Advanced Technologies does

GT Advanced Technologies (GTAT) was founded in 1994 and specialized in crystal growth equipment and substrate production, originally serving the solar, LED, and consumer electronics industries. After a 2014 Chapter 11 bankruptcy filing in New Hampshire, the company was restructured around Silicon Carbide (SiC) crystal growth and substrate production for power semiconductor applications, culminating in its 2021 acquisition by ON Semiconductor (onsemi). As a wholly-owned subsidiary, GTAT provides onsemi with internal SiC crystal production capability, forming the foundation of onsemi's vertically integrated SiC supply chain spanning volume boule growth, substrate fabrication, epitaxy, device fabrication, and packaging.

GTAT's core technology centers on volume SiC boule crystal growth and substrate production, with a transition to 200mm SiC wafer production that delivers approximately 80% more chip output per wafer than smaller-diameter substrates. This capability underpins onsemi's EliteSiC product family, including MOSFETs, Schottky diodes, and power modules used in automotive electrification (EV powertrain, ADAS), industrial automation, energy infrastructure, and data center power applications. The subsidiary operates from Hudson, USA, with 501–1,000 employees, and its crystal and substrate output is consumed internally by onsemi rather than sold on the merchant market.

The business model shifted from merchant equipment and substrate sales to a captive supply model post-acquisition. Pricing is not publicly disclosed, and standalone revenue is no longer reported because GTAT is consolidated within onsemi. Prior to the acquisition, GTAT pursued a B2B model selling crystal growth equipment and SiC substrates to solar, LED, and semiconductor customers, with public-company funding rounds of approximately $50.2 million (2013) and $33.5 million (2010). Historical M&A activity — including Crystal Systems (2010, $78.75M), Confluence Solar (2011), and Twin Creeks Technologies (2012) — built the SiC and advanced crystal platform that ultimately attracted onsemi as a strategic acquirer.

Name

GT Advanced Technologies

Legal name

GT Advanced Technologies

Website

https://gtat.com

Company type

Private

Founded year

1994

Operating status

Acquired

Headcount range

501–1,000 employees

Ownership category

akta.pro rank

Product category

Silicon Carbide (SiC) Substrates

NAICS

Semiconductor Machinery Manufacturing (333242), Semiconductor and Related Device Manufacturing (334413)

SIC

Industrial Process Furnaces & Ovens (3567)

akta.pro primary industry

Compound Semiconductor Wafers & Substrates (SiC/GaN/GaAs/InP/Sapphire) (HDAHAGAB)

akta.pro secondary industries

Wide-Bandgap Power Devices (SiC/GaN Discretes) (HDAHAHAG), Power Modules (IGBT/MOSFET/SiC/GaN Modules) (HDAHAHAH)

Keywords

• Silicon carbide substrates
• Power semiconductor materials
• Crystal growth equipment
• SiC wafer production
• Wide bandgap semiconductors

Headquarters

HQ city

Hudson

HQ country

United States

HQ region

North America

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Operations, Technology or R&D, Personnel, Supply Chain, Infrastructure

Core offering

GT Advanced Technologies (GTAT) specializes in Silicon Carbide (SiC) crystal growth and substrate production for power semiconductor applications. Following its 2021 acquisition by ON Semiconductor (onsemi), it provides end-to-end SiC capability spanning volume boule growth, substrate fabrication, epitaxy, device fabrication, and packaging. The company's manufacturing includes transition to 200mm SiC wafer production, enabling approximately 80% increased chip output per wafer.

Product overview

GT Advanced Technologies was acquired by ON Semiconductor in 2021 for internal SiC crystal production. The company operates as part of onsemi's intelligent power and sensing technologies portfolio, providing vertical integration for Silicon Carbide (SiC) power semiconductors. GT Advanced Technologies' SiC capabilities enable onsemi to offer end-to-end SiC solutions from raw material growth through finished device manufacturing, supporting the production of MOSFETs, Schottky diodes, and power modules for automotive, industrial, and energy infrastructure applications.

Differentiator

Problem solved

Functional benefit

Products and services

• GT Advanced Technologies SiC Crystal Production

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

One partnership is on record.

• ON Semiconductor (onsemi)coreStrategic or Co-development Partner · 1 January 2021onsemi acquired GT Advanced Technologies in 2021 specifically to gain internal Silicon Carbide (SiC) crystal production capability. This strategic acquisition transformed onsemi into a vertically integrated SiC supplier with end-to-end capability from substrate through device packaging, enabling supply chain security and cost efficiency for SiC power semiconductors targeting automotive electrification, industrial automation, and AI data center markets.

Recent moves6 records

Expansion highlights3 records

Direct peers

• Wolfspeed: Wolfspeed is the most direct competitor to GTAT in the SiC substrate and device market, operating its own vertically integrated SiC supply chain from boule growth through power devices. Both compete on the same merchant substrate customer relationships and overlapping automotive and industrial power conversion end markets.
• Coherent (formerly II-VI): Coherent is a major merchant SiC substrate producer serving power-device fabs worldwide, including through 150mm and 200mm wafer programs. GTAT competes head-to-head with Coherent's SiC substrate business for the same automotive and industrial power semiconductor customers that onsemi supplies.
• ROHM Semiconductor: ROHM has invested in fully integrated SiC supply chain, including substrate acquisition activity, and is one of the most aggressive vertically integrated SiC device competitors to the onsemi/GTAT combination. Both target the same automotive inverter and industrial power conversion sockets.
• Resonac (Showa Denko): Resonac is a leading SiC epitaxial wafer supplier and merchant substrate producer competing directly with GTAT's SiC substrate output. Both serve the same SiC power device value chain and overlapping EV and industrial power customers.
• SK Siltron CSS: SK Siltron acquired the former DuPont SiC substrate business and is one of the leading merchant SiC substrate suppliers. It competes with GTAT on SiC wafer supply for the same power-device customers and is also scaling 200mm SiC wafer programs.

Emerging players

• SICC (Shanghai SiC): SICC is a Chinese SiC substrate manufacturer scaling rapidly with domestic Chinese supply chain support. While currently smaller, SICC represents a competitively priced SiC substrate source that overlaps GTAT's served merchant and captive markets.
• Soitec: Soitec is a semiconductor engineered substrate producer (notably SOI) and has publicly explored SiC substrate technologies. While not a direct head-to-head SiC competitor today, Soitec represents a potential adjacent entrant in advanced engineered substrates for power applications overlapping GTAT's roadmap.

Broad incumbents

• STMicroelectronics: STMicroelectronics is a vertically integrated SiC power device manufacturer with internal substrate sourcing. While it does not run SiC boule growth at the same scale as GTAT, it competes for the same automotive design wins with SiC MOSFETs and modules using substrates sourced largely from Coherent, Resonac, and other merchant suppliers.
• Infineon Technologies: Infineon is a leading SiC power device supplier serving automotive and industrial customers. It competes with onsemi/GTAT on the device side and sources SiC substrates from merchant suppliers that compete with GTAT's substrate business.

Others

• AIXTRON: AIXTRON manufactures MOCVD and CVD deposition equipment used in SiC and GaN epitaxy and crystal growth. While upstream rather than directly competing on substrates, AIXTRON's equipment enables the same SiC value chain GTAT operates within.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

• Xx.com/GTATCorp
• Facebookfacebook.com/GTAdvancedTechnologies
• LinkedInlinkedin.com/company/gt-advanced-technologies

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Funding overview

Funding rounds2 records

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A3 records

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about GT Advanced Technologies