IXYS
IXYS is a power semiconductor and solid state relay specialist founded in 1983, serving automotive, renewable energy, and industrial automation customers with IGBT, SiC, and GaN transistor technology. Now part of Littelfuse following its acquisition.
- Company typePublic
- Founded1927
- HeadquartersLowell, United States
- Headcount1,001–5,000
- GTM typeB2B
- OfferingHardware or Manufacturing
What IXYS does
IXYS Corporation is a Silicon Valley-headquartered power semiconductor company founded in 1983 by Nathan Zommer, specializing in energy-efficient electronic components based on IGBT, Silicon Carbide (SiC), and Gallium Nitride (GaN) high-performance transistor technologies, alongside a dedicated solid state relay (SSR) product line. The company's devices serve automotive and renewable energy power management applications, as well as industrial automation, thermostats, fire alarms, and metering use cases requiring reliable solid-state switching. IXYS pursued a horizontal segmentation strategy, distributing through B2B electronics component channels and direct OEM relationships, with a global geographic reach supported by acquisitions such as IXYS UK Westcode (2002). The company historically supplemented organic technology development with targeted M&A — including Zilog ($62.4M, 2009), RadioPulse (2015), MicroWave Technology (2003), Directed Energy Inc (2000), and Paradigm Technology (1998) — to extend into embedded control, RF/microwave, and wireless adjacencies. IXYS was acquired by Littelfuse, Inc. (NASDAQ: LFUS), a publicly traded diversified industrial technology manufacturer, and is now operated as part of the Littelfuse power semiconductor and SSR portfolio.
IXYS firmographics
Firmographics- Name
- IXYS
- Legal name
- Littelfuse, Inc.
- Website
- https://ixys.com
- Company type
- Public
- Founded year
- 1927
- Operating status
- Operating
- Headcount range
- 1,001–5,000 employees
- Short description
- IXYS is a power semiconductor and solid state relay specialist founded in 1983, serving automotive, renewable energy, and industrial automation customers with IGBT, SiC, and GaN transistor technology. Now part of Littelfuse following its acquisition.
- Ownership category
- akta.pro rank
IXYS industry classification
Industry- Product category
- Power Semiconductors
- NAICS
- Relay and Industrial Control Manufacturing (335314)
- SIC
- Electrical Industrial Apparatus (3620)
- akta.pro primary industry
- Power Modules (IGBT/MOSFET/SiC/GaN Modules) (HDAHAHAH)
- akta.pro secondary industries
- High-Voltage, Power Discretes & Modules (IGBT/MOSFET/SiC/GaN) (HDAHAAAK), Wide-Bandgap (SiC/GaN) Power Modules, Gate Drivers & Packaging (EUAFAIAJ), Power Management & Power Conversion ICs (PMIC/DC‑DC/AC‑DC/Gate Drivers) (HDAHABAE)
Keywords
Where IXYS is headquartered
LocationHeadquarters
- HQ city
- Lowell
- HQ country
- United States
- HQ region
- North America
Markets served
IXYS business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Operations, Technology or R&D, Supply Chain, Personnel, Marketing or Sales, Infrastructure
IXYS product offering
Product offeringCore offering
IXYS designs and manufactures power semiconductors — including IGBTs, SiC and GaN transistors, and power MOSFETs — as well as solid state relays for high-voltage and high-current switching applications. The company serves industrial, automotive, and renewable energy OEMs with discrete and module-level power conversion components. Following acquisition by Littelfuse, IXYS products are now sold and supported through the Littelfuse sales and distribution network.
Differentiator
Problem solved
Functional benefit
Products and services
- CPC1601M Solid State Relay (SSR) Latching Relay Latching solid state relay in IXYS's CPC product family, designed for high-reliability switching applications where the company has built a recognized specialty. Targeted at industrial and embedded switching use cases requiring long-life, silent, and bounce-free operation.
- MMIX1T500N20X4 Power Silicon MOSFET High-current/high-voltage N-channel power silicon MOSFET from IXYS's power discrete portfolio, used in industrial, automotive, and renewable energy power conversion applications.
Quantifiable outcome
- Power transistor market growth from $16.26 billion (2025) to $42.02 billion (2035) at CAGR supporting demand for IXYS-type products
Companies that use IXYS
Customer profileSegments2 records
Ideal customer profiles1 record
IXYS technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature1 record
IXYS partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- LittelfusecoreIXYS was acquired by Littelfuse in 2019, integrating IXYS's power semiconductor and solid state relay expertise with Littelfuse's circuit protection portfolio. The acquisition expanded Littelfuse's presence in the power semiconductor market and created synergies in serving automotive, industrial, and renewable energy customers with comprehensive protection and power control solutions.
Scale indicators3 records
Recent moves6 records
Expansion highlights5 records
IXYS competitors and assessment
Company assessmentBroad incumbents
- ON Semiconductor (onsemi): Leading supplier of SiC, IGBT, and power management ICs targeting automotive and industrial power-conversion applications. Closely comparable to IXYS in device portfolio, technology roadmap (especially SiC), and end-market focus.
- Infineon Technologies: Global leader in power semiconductors with deep IGBT, SiC, and GaN product lines serving automotive, renewable, and industrial markets. Directly comparable to IXYS across the same device families and end-markets, though at much greater scale and with broader portfolio.
- Microchip Technology: Diversified MCU and analog/mixed-signal semiconductor supplier with discrete power (MOSFETs, IGBTs, gate drivers) offerings for industrial and automotive markets. Comparable to IXYS as a broad supplier where power semiconductors sit alongside larger MCU and analog franchises.
- Renesas Electronics: Major semiconductor supplier with discrete power devices, IGBTs, and power management ICs serving automotive and industrial customers post-Dialog and Intersil acquisitions. Comparable to IXYS in automotive power electronics with a broader MCU-heavy portfolio.
- Vishay Intertechnology: Diversified discrete semiconductor and passive component manufacturer with MOSFET, IGBT, and power module offerings. Comparable to IXYS as a long-established, broad-line power discrete supplier serving industrial, automotive, and military customers.
- STMicroelectronics: Major power semiconductor supplier offering IGBT, SiC MOSFETs, and gate drivers for EV traction, solar inverters, and industrial drives. Overlaps directly with IXYS' technology stack and customer segments across automotive and renewable energy.
- Mitsubishi Electric (Semiconductor): Established power module manufacturer with leading IGBT module franchise for traction, industrial drives, and renewable inverters. Directly comparable to IXYS' power module product lines, particularly for high-voltage/high-current applications.
- Toshiba Electronic Devices & Storage: Long-standing supplier of discrete power devices, IGBTs, and SiC MOSFETs for automotive, industrial, and renewable applications. Comparable to IXYS as a heritage discrete power semiconductor competitor across overlapping product categories.
Emerging players
- Wolfspeed: Pure-play Silicon Carbide device and wafer supplier focused on SiC MOSFETs and power modules for EV and renewable applications. Directly comparable to IXYS' SiC roadmap, though vertically integrated into SiC wafer production and at earlier commercial scale.
Direct peers
- ROHM Semiconductor: Japanese semiconductor manufacturer with strong SiC, IGBT, and power management IC portfolio serving automotive and industrial customers. Directly comparable to IXYS across the same wide-bandgap and silicon power device categories, especially in EV inverters.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat3 records
Key highlights7 records
Customer concentration
IXYS social profiles
Digital presenceIXYS financial estimates
Financial estimateRevenue estimate
Valuation estimate
IXYS leadership team
Management profileNumber of profiles
Profiles1 record
IXYS funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
IXYS M&A and investment
M&A and investmentM&A6 records
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about IXYS
What does IXYS do?
IXYS designs and manufactures power semiconductors — including IGBTs, SiC and GaN transistors, and power MOSFETs — as well as solid state relays for high-voltage and high-current switching applications. The company serves industrial, automotive, and renewable energy OEMs with discrete and module-level power conversion components. Following acquisition by Littelfuse, IXYS products are now sold and supported through the Littelfuse sales and distribution network.
Is IXYS a public or private company?
IXYS is a public company. It is classified as corporate owned and is currently operating.
When was IXYS founded?
IXYS was founded in 1927. It employs 1,001 to 5,000 people.
Where is IXYS based?
IXYS is headquartered in Lowell, United States, in the North America region.
Who are IXYS's main competitors?
Broad incumbents on record are ON Semiconductor (onsemi), Infineon Technologies, Microchip Technology, Renesas Electronics, Vishay Intertechnology, STMicroelectronics, Mitsubishi Electric (Semiconductor) and Toshiba Electronic Devices & Storage. Wolfspeed is listed as an emerging player. ROHM Semiconductor is listed as a direct peer.
Does IXYS have an API?
No public API is recorded for IXYS.
What industry is IXYS in?
IXYS's product category is Power Semiconductors. Its primary akta.pro industry code is HDAHAHAH, Power Modules (IGBT/MOSFET/SiC/GaN Modules), with a secondary code of HDAHAAAK, High-Voltage, Power Discretes & Modules (IGBT/MOSFET/SiC/GaN). Its NAICS code is 335314 and its SIC code is 3620.