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ATI INTERCO designs, manufactures and commercialises complete connectivity solutions, a range of connectors for printed circuits and interfaces, custom connectors, backshells and a large range of cabling components and circular or rectangular connectors accessories.

From the first design phase we use validated, tested technologies combined in innovative and pertinent ways to ensure the reliability, security and ergonomics of our customers’ harsh environment electrical systems.

ATI-INTERCO produces connectors for printed circuits (board to board connectors), modular miniature connectors (mixed layout connectors with signal, coaxial and power contacts), RF connectors, filtered and shielded connectors…. Our non-catalogue products are designed and manufactured to stringent customer specifications (custom design connectors). It also manufactures backshells for circular and rectangular connectors in standard sizes and to individual customer specifications, junction boxes, a vast range of cabling components, as well as circular connectors and high performance interconnection systems for custom applications.

ATI-INTERCO also develops complete sub-systems to ensure system compatibility and interoperability (military connectors, avionics connectors).

Our principal markets are civil and military avionics and space, defence, (missiles, marine, ground based & communications), rail transport and signalling, and all industries using electrical connectors in harsh environments like nuclear energy.

Our commitment is dedicated to our customers’ needs, from Design to Satisfaction.



  • Founded in 1951, ATI Electronique has grown by producing diverse connectivity solutions and equipment for a high profile and exacting customer base.

  • ATI Electronique offer a catalogue of standards compliant connectors and customised connectivity solutions for unusual and exacting applications.

  • Military, aerospace, rail, industrial, medical... In all market segments ATI Electronique’s products reflect the company ethos: The alliance of innovation and quality.

  • Interconnexions was formed in 1970 by a business leader from the world of aerospace cabling and connectors.

  • Growing steadily since its inception, the company has equipped itself with the means of research, development and production adapted to the needs of the market.

  • Over the years Interconnexions has proposed a range of cabling and connectivity components adapted to the working environments and constraints of our customers, from individual components to complete interconnection systems.

  • Interconnexions has from the start been a partner to the major actors in aerospace, defense, rail and professional electronics.

  • The two companies combined in 2009 in order to combine their respective areas of expertise and provide a better service to their customers.

  • ATI-INTERCO joins CONESYS group in 2013.

Professional organizations


ATI-INTERCO are members of some professional organizations such as :

  • GIFAS (French Aerospace Industries Association) - AERO-SME committee -
  • ASTECH Paris Région Cluster (Aerospace Competitiveness Cluster)
  • FIF (French Railway Industry Association)



ATI-INTERCO is a division of the ESARIS Industries Group. We produce high quality products for high-tech programs for aeronautics, aerospace, defense, mass transit, industries.

The size and organization of the company allow to master the design and production processes and to ensure product reliability and flexibility of the solutions we offer. To meet clients’ evolving expectations, the teams work with the R&D consulting department and use an improved, modernized and rationalized industrial tool.

The site hosts the teams in their entirety: technical and commercial team, quality and logistics teams, R&D consulting department, assembly workshop and test laboratory. This organization allows us to master the main stages of production for low and medium-volume series produced in the factory. We have a design office and a wide range of production techniques in the plastics industry and machining.

The integrated factory to master production is located in France :

Lisses (south Paris)

Lisses (south Paris) - Plant surface : 3 500 m² (40 000 ft²).




Happy New Year 2021

The Esaris Industries group and its companies ATI-INTERCO, FELS, SAUMAC and THIVEND wish you a Happy New Year.

Winter closure

Our offices will be closed from December 24th 2020 to January 3rd.

We are open !

Our manufacturing plant is open during this confinement period.

We are all working in safe conditions and stay focused on customers satisfaction.

Summer holydays 2020

August 2020: Our offices will be closed from 8th till 23th.


Cher client,

C'est la reprise !
Notre site de production est maintenant ouvert et notre activité a pleinement redémarré.

Bien cordialement,

Dear customer,

We're back !
Our production facility has reopened and we have returned to full activity.

Summer Holidays 2019

August 2019: Our offices will be closed from 5th till 16th.

Paris Air Show 2019

Thank you for your visit and we remain available for any further information.


Join ESARIS INDUSTRIES during Paris Air Show 2019.
Hall 2B - Booth H125

1MM pitch connectors
Winter Closure

Our offices will be closed from December 24th 2018 to January 1st 2019.

1MM series connectors
Summer Holidays

August 2018: Our offices will be closed from 6th till 24th 2018.

Eurosatory 2018 - Thank you

ESARIS INDUSTRIES and ATI-INTERCO thank you for visiting our booth during the show.

We remain available for any further information.




Happy New Year from ATI-INTERCO!


Our offices will be closed from December 23rd 2017 to January 2th 2018.

Pacte PME - ETI Destination

First session at ALSTOM:
ATI-INTERCO was one of 34 French SMEs accompanied by Pacte PME this October 26th, 2017.

Press release - Miniaturization

Miniaturization 1 mm & 2 mm pitch PCB connectors available from ATI-INTERCO for the Harsh Environment Interconnect systems

Download the press release here

Press release - Backshells

Backshells, a global range of solutions available from ATI-INTERCO for the Harsh Environment Interconnect systems

Download the press release here

International Paris Air Show 2017

We met you on our booth during the Paris Air Show 2017 in Bourget.

Again, we would like to thank you for your visit and we remain available for any further information.

Press release - New web platform

Together for a new web platform

Download the press release here

New factory

ATI Interco have moved to a new factory

Our new address :

14 rue Léonard de Vinci
CS 40615 - Lisses
91027 EVRY Cédex - France

Phone numbers and addresses email remain the same.





Engineering in Lisses

ATI-INTERCO possesses a broad and highly competitive technical expertise thanks to a policy of continual investment.

Permanently looking for new technological answers, ATI-INTERCO researches and develops several applications regarding: molded composite, technical thermoplastics, miniaturization, contact technologies for high frequencies or for low insertion force functions, the increase of carried voltage and power, hermetic features, resistance to high temperature and high vibrations, etc.


Laboratory in Lisses

Electronic and mechanical laboratory

Our prototypes are created in our laboratories by experienced technicians.

Validation & tests in Lisses

Testing laboratory

All our products undergo rigorous electrical, mechanical and climatic testing.





Workshops in Lisses
Workshops in Lisses

Machining & Plastic injection

The mechanical workshop incorporates CNC machine tools and presses for thermoplastics, thermosets and elastomers. The workshop is fully supported by specialized maintenance facilities.

Assembly workshop in Lisses


Assembly, waterproofing, compounding, cutting, stripping, cabling, soldering and welding are carried out in our workshops.

Connectors, wiring looms, backshells and interconnection systems are produced to the highest industrial standards by qualified operators.

Laser labeling in Lisses


All our products are labeled by inkjet, laser or etching.




Quality and environment


Engagement & Certifications



EU Directives

ATI-INTERCO respect the european directive REACH.

The status of our companies with respect to the directive is the following: non manufacturers of "substances", non manufacturers of "preparations", “downstream users” and "producers of articles". We are "downstream users" and "producers of articles" where the substances present in our articles are not destined to be disposed of in "reasonably foreseeable usage conditions" and are considered as such in the case of normal "industrial use". As such, we are not obliged to pre-register the substances used in our preparations. Also, the substances listed in the PDSL (Priority Declarable Substances List) present in our articles represent a usage inferior to 1 tonne per year. We have turned to our suppliers and requested details of their actions in respect to REACH. Today we use the last candidate list published twice a year by the ECHA.

The case of cadmium chromate (cadmium + chrome VI) is linked to the W class of standards for connectors (Conductive coating and 500 hours in saline mist) and linked to the specifications of certain customers, who are obliged where possible, to specify a substitute.

The position of ATI-INTERCO consists of proposing all of our product ranges in a version "RoHS". At ATI-INTERCO, we have chosen to follow the demands of the market. We also keep available the current versions of our products notably for the market segments where no technical modification to the product can be tolerated throughout its service life.

For most of our products, conforming to the directive RoHS consist of removing the lead from our surface treatments. It should be noted that many of our pieces treated with a tin-lead (SnPb) 90/10 coating are also available with gold (Au) coating. Since the 1st January 2006 all our catalogue is available in lead-free versions. All lead-free products have a dedicated reference and are marked as such. All our new products developed since the 1st January 2005 are RoHS compliant.

ATI Interco

  • 14 rue Léonard de Vinci
       CS 40615 - Lisses
       91027 EVRY Cédex
    Tel: +33 1 69 36 64 20
  • Email: [email protected]

ATI-INTERCO is part of the ESARIS Industries Group

2 rue J.M. Jacquard
67400 Illkirch-Graffenstaden