# Top 30 electronics and semiconductor companies in the Essonne department
Tamtam tracks 44 electronics and semiconductor companies headquartered in the Essonne department. This list ranks the 30 largest by number of employees on LinkedIn, led by HORIBA France, L-Acoustics and Pasqal. Their median headcount is 49. Half of them were founded in 1998 or later. The most common headquarters are Palaiseau (7), Villebon-sur-Yvette (7) and Massy (3).
These companies in Essonne are primarily engaged in electronics and semiconductor manufacturing, spanning a range of activities from scientific instrumentation to quantum computing. The list includes established players and younger firms, reflecting a mix of industries within the broader tech sector. Companies like HORIBA France (measuring and control instruments) and L-Acoustics (professional sound solutions) represent more traditional electronics, while Pasqal and Quandela specialize in advanced quantum technologies.
The data shows a strong concentration of headquarters in the Palaiseau area, with several companies like HORIBA France, Pasqal, Sofradir, and III-V Lab located there. This suggests a regional hub for research and development in high-tech fields, particularly in semiconductor and quantum technologies. UMS - United Monolithic Semiconductors, founded in 1996, designs and manufactures GaAs and GaN based RF and millimeter-wave integrated circuits.
馃嚝馃嚪 Essonne 路 30 companies 路 Updated Nov 11, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [HORIBA France](https://www.tamtam.ai/c/horiba-france) (horiba.com)
HORIBA France manufactures instruments to help individuals tackle all their challenges | Measuring and Control Instrument Manufacturing | 馃嚝馃嚪 Palaiseau | 2,200 | |
| 2 | [L-Acoustics](https://www.tamtam.ai/c/l-acoustics) (l-acoustics.com)
Leading manufacturer of professional sound solutions founded in 1984 near Paris, with presence in over 80 countries and specializing in modern line array technology and multichannel sound systems | Appliances, Electrical, and Electronics Manufacturing | 馃嚝馃嚪 Marcoussis | 700 | 1984 |
| 3 | [Pasqal](https://www.tamtam.ai/c/pasqal) (pasqal.com)
The company specializes in building programmable quantum simulators and computers using neutral atoms in optical tweezers for quantum information processing | IT Services and IT Consulting | 馃嚝馃嚪 Palaiseau | 297 | 2019 |
| 4 | [UMS - United Monolithic Semiconductors](https://www.tamtam.ai/c/ums-united-monolithic-semiconductors) (ums-rf.com)
Designs and manufactures GaAs and GaN based RF and millimeter-wave integrated circuits and provides advanced foundry services for critical applications. | Semiconductor Manufacturing | 馃嚝馃嚪 Villebon-sur-Yvette | 210 | 1996 |
| 5 | [Archos](https://www.tamtam.ai/c/archos) (archos.com)
A pioneering consumer electronics company based in France, known for innovation in mobile solutions, AI, blockchains, and IoT networks | Computers and Electronics Manufacturing | 馃嚝馃嚪 Igny | 170 | 1988 |
| 6 | [Quandela](https://www.tamtam.ai/c/quandela) (quandela.com)
Specializing in photon-based quantum computing and cloud solutions to assist organizations in achieving quantum transformation | Nanotechnology Research | 馃嚝馃嚪 Massy | 157 | 2017 |
| 7 | [Sofradir](https://www.tamtam.ai/c/sofradir) (lynred.com)
Designs and manufactures high-quality infrared technologies for aerospace, defense, and commercial markets, including infrared detectors for military programs and commercial thermal imaging equipment. | Defense and Space Manufacturing | 馃嚝馃嚪 Palaiseau | 123 | 1986 |
| 8 | [3SP Technologies S.A.S.](https://www.tamtam.ai/c/3sp-technologies-s-a-s) (3sptechnologies.com)
Specializes in designing and manufacturing optical semiconductor components, providing advanced laser technology solutions for global industries. | Semiconductor Manufacturing | 馃嚝馃嚪 Nozay | 113 | |
| 9 | [Exens Group](https://www.tamtam.ai/c/exens-group) (exens-solutions.com)
Specializing in RF and microwave electronics, this company designs and manufactures components, modules, and subsystems for various industries on a global scale | Aviation and Aerospace Component Manufacturing | 馃嚝馃嚪 Les Ulis | 87 | 2023 |
| 10 | [STAE (France)](https://www.tamtam.ai/c/stae-france) (stae.fr)
The company specializes in supporting clients in the design, industrialization, and production of highly technical technological products in various sectors | Industrial Machinery Manufacturing | 馃嚝馃嚪 Savigny-sur-Orge | 62 | 1979 |
| 11 | [Imagine Optic](https://www.tamtam.ai/c/imagine-optic) (imagine-optic.com)
Development and manufacturing of advanced wavefront sensing and adaptive optics technologies for research and industrial applications worldwide. | Measuring and Control Instrument Manufacturing | 馃嚝馃嚪 Orsay | 62 | 1996 |
| 12 | [III-V Lab](https://www.tamtam.ai/c/iii-v-lab) (3-5lab.fr)
A private R&D organization specializing in III-V semiconductors, offering pre-commercial production of components, epitaxy wafers, and innovative technology development | Research Services | 馃嚝馃嚪 Palaiseau | 60 | 2004 |
| 13 | [SAPCO](https://www.tamtam.ai/c/sapco) (sapco.fr)
A leading manufacturer of ceramic insulated ignition and probe electrodes, sensors, cables, and connectors for combustion processes with global presence | Manufacturing | 馃嚝馃嚪 Le Coudray-Montceaux | 52 | 1949 |
| 14 | [FAAR-PRONERGY](https://www.tamtam.ai/c/faar-pronergy) (faar-pronergy.com)
Develops and produces embedded electronics and power electric solutions for eco-mobility, including autonomous driving kits, energy hubs, and complex system architectures, from specification to production. | Engineering Services | 馃嚝馃嚪 Villebon-sur-Yvette | 49 | 2004 |
| 15 | [Hamamatsu Photonics France](https://www.tamtam.ai/c/hamamatsu-photonics-france) (hamamatsu.com)
Manufactures optoelectronic components, modules, and systems covering the entire optical spectrum for demanding applications in medical, automotive, science, environmental, analytical, and industrial processes. | Semiconductor Manufacturing | 馃嚝馃嚪 Massy | 49 | 1985 |
| 16 | [GACI Technologies](https://www.tamtam.ai/c/gaci-technologies) (gaci.fr)
Wholesale company operating from Villebon sur Yvette, France, specializing in distribution and supply of various products to retailers. | Computers and Electronics Manufacturing | 馃嚝馃嚪 Villebon-sur-Yvette | 48 | 1992 |
| 17 | [EFFILUX](https://www.tamtam.ai/c/effilux) (effilux.com)
Global leader in LED light systems for industrial environments, offering plug and play products and custom solutions with a focus on sustainability and customer satisfaction | Automation Machinery Manufacturing | 馃嚝馃嚪 Les Ulis | 47 | 2009 |
| 18 | [STYREL](https://www.tamtam.ai/c/styrel) (styrel.fr)
Engineering and training services specializing in industrial IT, embedded real-time computing, custom industrial PCs, test benches, and complete system integration. | Software Development | 馃嚝馃嚪 Le Plessis-P芒t茅 | 41 | 1984 |
| 19 | [SEDI-ATI by Fiber Optics Group](https://www.tamtam.ai/c/sedi-ati-by-fiber-optics-group) (sedi-ati.com)
Design and manufacture optical fiber solutions for extreme environments, including high temperature, pressure, radiation, and specialized industrial and medical applications. | Aviation and Aerospace Component Manufacturing | 馃嚝馃嚪 脡vry-Courcouronnes | 41 | 1951 |
| 20 | [Sensome](https://www.tamtam.ai/c/sensome) (sensome.com)
Innovative start-up developing remote monitoring technology to transform invasive medical devices into connected healthcare devices EN ISO 13485:2016 certified | Medical Equipment Manufacturing | 馃嚝馃嚪 Massy | 40 | 2014 |
| 21 | [NcodiN](https://www.tamtam.ai/c/ncodin) (ncodin.com)
Development of ultra-fast, energy-efficient optical interconnects using the world鈥檚 smallest silicon-integrated laser for advanced AI hardware. | Semiconductor Manufacturing | 馃嚝馃嚪 Palaiseau | 38 | 2023 |
| 22 | [mirSense](https://www.tamtam.ai/c/mirsense) (mirsense.com)
A French high tech company specializing in QCL-based solutions for defense, security, industry/environment markets, offering DFB, high-power lasers, and OEM gas analyzers | Semiconductor Manufacturing | 馃嚝馃嚪 Palaiseau | 36 | 2015 |
| 23 | [New Imaging Technologies (NIT)](https://www.tamtam.ai/c/new-imaging-technologies-nit) (new-imaging-technologies.com)
Design and manufacture of advanced SWIR InGaAs sensors and cameras with in-house hybridization and read-out circuit technologies. | Semiconductor Manufacturing | 馃嚝馃嚪 Verri猫res-le-Buisson | 29 | 2007 |
| 24 | [Noxant, an Exosens company](https://www.tamtam.ai/c/noxant-an-exosens-company) (noxant.com)
Experts in optronic systems, designs and develops revolutionary vision solutions for industrial and surveillance applications. Innovative vision technology for high-performance systems. | Appliances, Electrical, and Electronics Manufacturing | 馃嚝馃嚪 Palaiseau | 29 | |
| 25 | [TECHWAY Electronics COTS](https://www.tamtam.ai/c/techway-electronics-cots) (techway.com)
Techway specializes in developing FPGA-based signal and image processing systems since 2003, aiming to simplify complex technology and deliver advanced yet affordable solutions | Defense and Space Manufacturing | 馃嚝馃嚪 Villebon-sur-Yvette | 18 | 2003 |
| 26 | [Weeroc](https://www.tamtam.ai/c/weeroc) (weeroc.com)
Designs and supplies analogue and mixed ASICs for industrial applications including medical imaging, homeland security, nuclear protection, scientific instruments, and space. | Space Research and Technology | 馃嚝馃嚪 Villebon-sur-Yvette | 16 | 2012 |
| 27 | [PULSONIC](https://www.tamtam.ai/c/pulsonic) (pulsonic.com)
Global provider of meteorological products & solutions for climatology, aeronautics, environment, industry, and agriculture Specializing in sensors, weather stations, networks, software, and crop solutions | Renewable Energy Semiconductor Manufacturing | 馃嚝馃嚪 Orsay | 15 | 1984 |
| 28 | [Cobham Microwave](https://www.tamtam.ai/c/cobham-microwave) (cobhameee.com)
Design and manufacture microwave components and systems for space, defense, security, industrial, scientific, and medical applications worldwide. | Defense and Space Manufacturing | 馃嚝馃嚪 Villebon-sur-Yvette | 14 | 2004 |
| 29 | [Synopsis Corporation Group](https://www.tamtam.ai/c/synopsis-corporation-group) (synopsisgroup.com)
Innovative solutions for RF and real-time applications up to 100 GHz, with expertise in military and telecommunications operations Design, develop, and manufacture integrated systems | Computers and Electronics Manufacturing | 馃嚝馃嚪 Villebon-sur-Yvette | 14 | 1998 |
| 30 | [HYTEM](https://www.tamtam.ai/c/hytem) (hytem.net)
Specializing in RF and Microwave technology, the company offers a range of innovative products including cable assemblies, RF components, and integration solutions up to 40 GHz | Appliances, Electrical, and Electronics Manufacturing | 馃嚝馃嚪 Villeconin | 13 | 1994 |
## How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 11, 2026.
## More company lists in the Essonne department
- [The largest companies in the Essonne department](https://www.tamtam.ai/l/largest-companies-essonne) (1,149)
- [Companies with in-house R&D in the Essonne department](https://www.tamtam.ai/l/r-and-d-companies-essonne) (198)
- [Multinational companies in the Essonne department](https://www.tamtam.ai/l/multinational-companies-essonne) (156)
- [Manufacturers in the Essonne department](https://www.tamtam.ai/l/manufacturers-essonne) (127)
- [Hardware manufacturers in the Essonne department](https://www.tamtam.ai/l/hardware-companies-essonne) (114)
- [Distributors and wholesalers in the Essonne department](https://www.tamtam.ai/l/distributors-and-wholesalers-essonne) (76)
- [IT Services and IT Consulting companies in the Essonne department](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-essonne) (70)
- [Professional services firms in the Essonne department](https://www.tamtam.ai/l/professional-services-firms-essonne) (68)
- [Public sector organisations in the Essonne department](https://www.tamtam.ai/l/public-sector-organisations-essonne) (66)
- [Aerospace and defence companies in the Essonne department](https://www.tamtam.ai/l/aerospace-and-defense-companies-essonne) (65)
- [IT services companies in the Essonne department](https://www.tamtam.ai/l/it-services-companies-essonne) (60)
- [Retail chains in the Essonne department](https://www.tamtam.ai/l/retail-chains-essonne) (59)
- [Construction companies in the Essonne department](https://www.tamtam.ai/l/construction-companies-essonne) (56)
- [Software Development companies in the Essonne department](https://www.tamtam.ai/l/software-development-companies-essonne) (51)
- [Pharmaceutical companies in the Essonne department](https://www.tamtam.ai/l/pharmaceutical-companies-essonne) (45)
- [Research institutes in the Essonne department](https://www.tamtam.ai/l/research-institutes-essonne) (42)
- [Events Services companies in the Essonne department](https://www.tamtam.ai/l/events-services-companies-essonne) (41)
- [SaaS companies in the Essonne department](https://www.tamtam.ai/l/saas-companies-essonne) (41)
- [Consulting firms in the Essonne department](https://www.tamtam.ai/l/consulting-firms-essonne) (40)
- [Family-owned companies in the Essonne department](https://www.tamtam.ai/l/family-owned-companies-essonne) (38)
- [Contract manufacturers in the Essonne department](https://www.tamtam.ai/l/contract-manufacturers-essonne) (35)
- [Research Services companies in the Essonne department](https://www.tamtam.ai/l/research-services-companies-essonne) (35)
- [Critical infrastructure operators in the Essonne department](https://www.tamtam.ai/l/critical-infrastructure-operators-essonne) (32)
- [Education providers in the Essonne department](https://www.tamtam.ai/l/education-companies-essonne) (30)
## The same list elsewhere in France
- [Electronics and semiconductor companies in France](https://www.tamtam.ai/l/electronics-companies-france) (846)
- [Electronics and semiconductor companies in 脦le-de-France](https://www.tamtam.ai/l/electronics-companies-ile-de-france) (230)
- [Electronics and semiconductor companies in Auvergne-Rh么ne-Alpes](https://www.tamtam.ai/l/electronics-companies-auvergne-rhone-alpes) (154)
- [Electronics and semiconductor companies in Occitanie](https://www.tamtam.ai/l/electronics-companies-occitanie) (89)
- [Electronics and semiconductor companies in Provence-Alpes-C么te d'Azur](https://www.tamtam.ai/l/electronics-companies-provence-alpes-cote-dazur) (79)
- [Electronics and semiconductor companies in the Is猫re department](https://www.tamtam.ai/l/electronics-companies-isere) (70)
- [Electronics and semiconductor companies in Grand Est](https://www.tamtam.ai/l/electronics-companies-grand-est) (56)
- [Electronics and semiconductor companies in Nouvelle-Aquitaine](https://www.tamtam.ai/l/electronics-companies-nouvelle-aquitaine) (53)
- [Electronics and semiconductor companies in the Haute-Garonne department](https://www.tamtam.ai/l/electronics-companies-haute-garonne) (49)
- [Electronics and semiconductor companies in the Bouches-du-Rh么ne department](https://www.tamtam.ai/l/electronics-companies-bouches-du-rhone) (45)
- [Electronics and semiconductor companies in Brittany](https://www.tamtam.ai/l/electronics-companies-brittany) (38)
- [Electronics and semiconductor companies in Pays de la Loire](https://www.tamtam.ai/l/electronics-companies-pays-de-la-loire) (38)
- [Electronics and semiconductor companies in the Hauts-de-Seine department](https://www.tamtam.ai/l/electronics-companies-hauts-de-seine) (35)
- [Electronics and semiconductor companies in the Gironde department](https://www.tamtam.ai/l/electronics-companies-gironde) (32)
- [Electronics and semiconductor companies in Hauts-de-France](https://www.tamtam.ai/l/electronics-companies-hauts-de-france) (27)
- [Electronics and semiconductor companies in the Yvelines department](https://www.tamtam.ai/l/electronics-companies-yvelines) (26)
- [Electronics and semiconductor companies in the Rh么ne department](https://www.tamtam.ai/l/electronics-companies-rhone) (25)
- [Electronics and semiconductor companies in Paris](https://www.tamtam.ai/l/electronics-companies-paris) (54)
- [Electronics and semiconductor companies in Grenoble](https://www.tamtam.ai/l/electronics-companies-grenoble) (28)
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Source: https://www.tamtam.ai/l/electronics-companies-essonne