The Yvelines department is home to a concentration of electronics and semiconductor companies, ranging from mid-sized firms to smaller, specialized entities. These companies are primarily involved in engineering services, manufacturing of electronic components, and advanced technology development.
Key players include LGM, which provides technological and software engineering consulting, and SOURIAU-SUNBANK Connection Technologies by Eaton, an intelligent power management company. 3D PLUS specializes in miniaturized electronic modules for space applications, while SiPearl designs energy-efficient CPUs for supercomputers. Médiane Système focuses on secure real-time operating systems, and LGM Ingénierie offers expertise in embedded electronics. Notably, several companies like LGM, LGM Ingénierie, and TP-Link France are located in Vélizy-Villacoublay, indicating a geographical cluster within the department.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 | 1,469 | ||||
| 2 |
SOURIAU-SUNBANK Connection Technologies by Eatonsouriau.com
An intelligent power management company focused on improving quality of life, protecting the environment, and helping customers manage power efficiently |
965 | |||
| 3 |
3D PLUS3d-plus.com
Development and manufacturing of miniaturized electronic modules for space applications, including memory, power, cameras, and custom SiP solutions. |
220 | |||
| 4 |
Médiane Systèmemedianesysteme.com
Specializes in custom secure real-time operating systems, private 5G networks, embedded AI, cybersecurity, and industrial network solutions. |
213 | |||
| 5 |
SiPearlsipearl.com
Designs energy-efficient CPUs for supercomputers, AI, and data centers. These CPUs address security, defense, medical, energy, and climate challenges with reduced environmental impact. |
160 | |||
| 6 |
LGM Ingénierielgm.group
Experts in embedded electronics, test equipment, and embedded networks for major industrial players in aeronautics, defense, rail, and automotive sectors. |
135 | |||
| 7 |
SBG Systemssbg-systems.com
Manufactures inertial measurement systems from miniature to high accuracy. Products are ideal for industrial, defense, and research projects, including unmanned vehicle guidance and surveying. |
124 | |||
| 8 |
Groupe Genarisgenaris.fr
Specializes in electrical and electronic design, prototyping, and manufacturing with integrated product development for defense, mobility, and industry sectors. |
71 | |||
| 9 |
Macnica ATD Europemacnica.com
European subsidiary specializing in semiconductor distribution, machine vision components, imaging solutions, and AI technology support throughout product development. |
57 | |||
| 10 |
TP-Link Francetp-link.com
Provides reliable and innovative network equipment for professionals, including VPN, Multi-WAN, 4G, and VDSL networks, consistently ranking as a global leader in WiFi devices. |
43 | |||
| 11 |
NCS SYSTEMS Francencs-systems.eu
Customized technology solutions and services tailored to Transport, Aerospace, Defense, Medical, Broadcast, and Industrial sector requirements. |
34 | |||
| 12 |
VDO Francecontinental.com
Provides electronic solutions and original equipment for special vehicles, alongside products and services for tachograph centers and fleet managers, in Rambouillet, France. |
30 | |||
| 13 |
ARTHESEarthese.fr
French company specializing in custom electronic circuit design and manufacturing, offering tailored solutions and long-term partnerships with innovative technology. |
26 | |||
Want more companies than this list?This page shows the largest ones only. Connect to Tamtam to see every company that matches, filter by size, industry or growth, and reach their decision-makers. | |||||
| 14 | 23 | ||||
| 15 |
Isentroniqisentroniq.com
Development of advanced wiring solutions to support scalable solid-state quantum computers, enabling practical quantum computing applications. |
16 | |||
| 16 |
A2R ELECTRONIQUEa2r-electronique.fr
Designing and manufacturing mechanical and electronic systems like test benches and harnesses; expert in electronic equipment wiring for military and aeronautics. |
16 | |||
| 17 |
BNBXTECHbnbxtech.com
A team of professionals dedicated to aiding businesses and startups in developing innovative software and hardware solutions, collaborating closely with clients to achieve their goals |
11 | |||
| 18 |
EUROMIPeuromip.com
Provides electronic components and co-development expertise to aerospace, aeronautical, and defense industries, ensuring innovation and reliability for extreme applications. |
10 | |||
| 19 |
FIAMM Francefiammantenna.fr
Technology actor in connectivity systems for the global automotive market, specializing in RF engineering, antennas, and advanced electronics for optimal reception. |
8 | |||
| 20 |
Mesurexmesurex.fr
French sensor manufacturer with over 50 years of experience providing professional solutions for various sectors, including aeronautics, automotive, and manufacturing |
6 | |||
| 21 |
Thorlabs Francethorlabs.com
A global leader in manufacturing and distributing components for optics, photonics, and laser applications, as well as advanced microscopy and imaging systems |
6 | |||
| 22 |
Ermatel Electroniqueermatel.fr
Offers comprehensive support for complex projects, focused on the design and realization of electronic functions for various applications. |
6 | |||
| 23 |
Exail - Maritime & Industryexail.com
Specializes in advanced robotics, maritime navigation, aerospace, and photonics technologies delivering reliable, safe solutions for civil and defense sectors worldwide. |
5 | |||
| 24 |
NANOSENSEnano-sense.com
NanoSense is a French SME specializing in Indoor Air Quality since 2002 They design and produce multi-sensor probes for CO2, VOCs, temperature, humidity, radon, and particles |
5 | |||
| 25 |
AVENTYS ELECTRONICSaventys-electronics.com
Designs and develops electronic solutions for energy, access control, fire safety, and physical measurement sectors across France. |
3 | |||
| 26 |
SDR-Technologies SASsdrtechnologies.fr
A company founded in 2016 develops tools for spectrum management and RF data processing using GPU processors and SDR receivers for various applications |
2 | |||
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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 Yvelines department
- The largest companies in the Yvelines department 1,469
- Multinational companies in the Yvelines department 226
- Companies with in-house R&D in the Yvelines department 160
- IT services companies in the Yvelines department 121
- IT Services and IT Consulting companies in the Yvelines department 118
- Manufacturers in the Yvelines department 109
- Professional services firms in the Yvelines department 108
- Hardware manufacturers in the Yvelines department 106
- Distributors and wholesalers in the Yvelines department 91
- Retail chains in the Yvelines department 89
- Consulting firms in the Yvelines department 72
- Aerospace and defence companies in the Yvelines department 65
- Public sector organisations in the Yvelines department 65
- Software Development companies in the Yvelines department 56
- Business Consulting and Services companies in the Yvelines department 53
- Government Administration companies in the Yvelines department 51
- Construction companies in the Yvelines department 50
- Automotive manufacturers and suppliers in the Yvelines department 49
- Motor Vehicle Manufacturing companies in the Yvelines department 49
- SaaS companies in the Yvelines department 49
- Education providers in the Yvelines department 46
- Industrial Machinery Manufacturing companies in the Yvelines department 43
- Critical infrastructure operators in the Yvelines department 41
- Family-owned companies in the Yvelines department 36
The same list elsewhere in France
- Electronics and semiconductor companies in France 846
- Electronics and semiconductor companies in Île-de-France 230
- Electronics and semiconductor companies in Auvergne-Rhône-Alpes 154
- Electronics and semiconductor companies in Occitanie 89
- Electronics and semiconductor companies in Provence-Alpes-Côte d'Azur 79
- Electronics and semiconductor companies in the Isère department 70
- Electronics and semiconductor companies in Grand Est 56
- Electronics and semiconductor companies in Nouvelle-Aquitaine 53
- Electronics and semiconductor companies in the Haute-Garonne department 49
- Electronics and semiconductor companies in the Bouches-du-Rhône department 45
- Electronics and semiconductor companies in the Essonne department 44
- Electronics and semiconductor companies in Brittany 38
- Electronics and semiconductor companies in Pays de la Loire 38
- Electronics and semiconductor companies in the Hauts-de-Seine department 35
- Electronics and semiconductor companies in the Gironde department 32
- Electronics and semiconductor companies in Hauts-de-France 27
- Electronics and semiconductor companies in the Rhône department 25
- Electronics and semiconductor companies in Paris 54
- Electronics and semiconductor companies in Grenoble 28