NEW OPTIMA D Series
Compact and miniature connector for extreme conditions
LEMO’s latest innovation—the OPTIMA D Series—combines high-performance engineering with a compact, lightweight design built for the toughest environments. Developed for defence, aerospace, and mission-critical systems, it delivers IP68 protection even when unmated, robust 5-spur keying for secure blind mating, and a modular design for seamless integration. Rigorously tested to MIL-STD-810H, the OPTIMA D Series offers rugged reliability and design flexibility—all in a space-saving form factor.
Advanced design. Military-grade performance.
Compact & Miniature Design
- Overmolded plug is 25% shorter than standard LEMO Series
- Small plug diameters optimize tight-space integration
- High contact density – up to 32 contacts in a compact form
Rugged & Reliable Performance
- MIL-STD-810H tested for shock, vibration, and environmental resistance
- IP68 sealing (20m/2h) even when unmated
- EMI/RFI shielding ensures clean, uninterrupted signal transmission
Modular Design for Maximum Flexibility
- Choice of push-pull or break-away latching systems
- Robust 5-spur keying enables safe and accurate blind mating
- Available in five sizes with multiple configurations:
- High-speed (USB, Ethernet)
- Multipole power/signal
- Coaxial solutions
- Easy mechanical integration:
- Flush mounting on the enclosure
- Uniform PCB height across all sizes
- Three socket models for streamlined system adaptation
Key features
- Compact size and miniature design
- Rugged design withstanding harsh conditions
- High pin density with a broad variety of combinations
- Sealing performance ensuring reliability in wet, dusty or submersible environments
- Dark and non-reflecting surface treatment with high corrosion resistance
- Secure locking mechanism even in high vibration environment
Compliant with MIL-STD-810H, ensuring performance in the toughest military applications
Technical characteristics
| Endurance | > 5000 matings |
| Ingress Protection Index (mated) | IP68 (20m/2h) unmated |
| Housing material | Nickel plated brass |
| Min. & Max. operating temperature | -55°C/+150°C (socket)
-40°C/+90°C (plug & free socket) |
| Salt fog | 1000 hours |
| Vibration | 37.8g max, 8 hours |
| Shielding effectiveness | > 75 dB up to 10 MHz > 40 dB up to 1 GHz |
Downloads
LEMO offers complete solutions including cable selection, meticulous cable assembly, and proficient overmolding services:
• Custom Solutions: Expert in complex cable harnesses and assemblies overmolding.
• Private Labeling: Tailored branding for sensitive projects.
• Certifications: IPC-620, ISO 9001, AS9100, MIL-STD-810, and more.
• End-to-End Support: From design to delivery, with timely
and reliable service.
Facing extreme connectivity requirements in compact spaces?
Reach out to our experts and discover how LEMO’s OPTIMA D Series meets your most demanding needs.
With a compact and miniature design, IP68 sealing, and MIL-STD-810H ruggedness, these connectors are engineered for mission-critical environments. Share your requirements today and let us design your perfect solution.