Trusted by the defence industry
LEMO is a trusted partner in high-performance interconnect solutions for the defence industry.
From military electronics to surveillance and tactical communication systems, LEMO connectors ensure unmatched reliability in the most demanding defence and security applications.
Extreme conditions
require exceptional solutions
Modern defence systems require cutting-edge connectivity solutions that meet the evolving challenges of military applications.
LEMO is at the forefront of these advancements, delivering next-generation interconnect solutions.
Below are some of the main connectivity challenges in defense applications and the ways LEMO addresses them through advanced engineering.
High-performance connectors optimized for Size, Weight, and Power (SWaP) in portable military systems
Supports high-speed data transmission with fiber-optic, coax, and twisted pair connectors.
Rugged, reliable design engineered to withstand the harshest conditions
Modular solutions for enhanced system integration
Advanced sealing ensuring protection against water, dust, moisture, and harsh environments
Customizable solutions for a wide range of defence and security applications.
Robust keyways and shells ensure secure and reliable connections under demanding conditions
Push-Pull, Breakaway, and Ratchet coupling systems for secure, easy-to-use connections in extreme conditions.
LEMO Connector Solutions for Defence & Security
 |
|  | |
|---|---|---|---|
M Series - Rugged Ratched Coupling LEMO lightweight, compact, high vibration resistant (Mil STD 202 & 810F), IP68 screw locking connector | LEMO lightweight, compact, high vibration resistant (Mil STD 810F), IP67 Push-Pull connector | D Series - Rugged Miniature Push-Pull LEMO compact and miniature high-vibration resistance (Mil STD 810H), IP68 Push-Pull connector | |
| Locking | Triple start, 3/4 turn ratchet coupling | Push-Pull | Push-pull and Break-away |
| Size (diameter) | 9 sizes from ø 11.1 to ø 34.0 mm (plugs) | 8 sizes from ø 8.5 to ø 36.1 mm (plugs) | 5 sizes from ø 7.0 mm to ø 18.8 mm |
| Keying | 10 keyway options | 6 keyway options | 3 keyway options |
| Shell Type | Over 40 shell styles | Over 12 shell styles | 3 shell styles |
| Shell Material | Aluminium or Brass | Aluminium or Brass | Brass |
| Plating | Antracite nickel or Chrome | Antracite nickel or Chrome | Antracite nickel |
| Cable diameter | 2.2 to 34 mm • 4 backshell options available | 2.2 to 34 mm • 1 backshell option | 3.2 to 11.7 mm • Overmolded backshell |
| Nb of contact | 3 to 114 | 3 to 66 | 2 to 32 |
| AWG | LV 16 to 32 • High Power 1 to 8 mm | 18 to 32 | 10 to 32 |
| Contact type | Multipole • Coax • Fibre Optic • Fluidic Mixed • High power | Multipole • Fibre Optic | Multipole • Coax • Mixed |
| Contact Termination | Multipole • Coax • Fibre Optic • Fluidic Mixed • High power | Multipole • Fibre Optic | Multipole • Coax • Mixed |
| Data Protocols | USB 2.0 / Eth Cat6 | - | USB 2.0 / USB 3.2 / SPE / Eth Cat6 |
| Sealing level | IP68 / hermetic sockets | IP68 / hermetic sockets | IP68 unmated 20m/2h |
| Temperature range | -55°C to 200°C | -55°C to 200°C | -55°C to 150°C |
| Mating Cycles | > 3000 | 300 / 5000 acc. to sizes/material | > 5000 |
Innovation in focus
End-to-End
defence connectivity
From connector to connection
In the evolving and demanding defence and security environments, LEMO and Northwire deliver integrated interconnect solutions combining precision connectors, PCB-Flex solutions, custom-engineered cables, and high-quality cable assemblies.
This comprehensive offering provides a one-stop solution, ensuring signal integrity, electrical performance, mechanical durability, and compliance with military standards.
How we partner
and innovate with you
We work side by side with defence system designers to develop interconnect solutions that are rugged and precise, mission-ready, secure, and built to perform in the world’s most demanding environments.
Understand the system’s role, operational context, environmental stressors, and interface constraints.
Deliverables:
Mission profile brief, technical specification outline, standards compliance (MIL-SPEC, NATO STANAG, etc.)
We collaborate on custom or semi-custom interconnects tailored to your exact operational and system needs.
Deliverables:
CAD models, ruggedised connector samples, materials and shielding specifications, EMI/EMC design criteria.
Rapid prototyping, testing, and validation under real-world and extreme conditions to ensure combat readiness.
Deliverables:
Prototype units, test data (shock, vibration, ingress, thermal), compliance reports.
Scalable manufacturing with strict quality controls, full traceability, and on-timendelivery for critical missions.
Deliverables:
Production plan, supply chain coordination, quality assurance certifications.
A long-term partner supporting upgrades, retrofits, maintenance, and next-generation programs — anywhere in the world.
Deliverables:
Technical support, redesign services, lifecycle planning, global support, shielding specifications, EMI/EMC design criteria.
- MIL-DTL-38999
- MIL-STD-810H
- NATO STANAG
Do you
have a
challenging
project?
LEMO has a solution ready for you to implement today.
With LEMO, you choose Swiss precision, engineering excellence, and products that meet the highest defence and security standards.