221 connector — breakaway, aluminum, IP68, for civil and military aeronautics
• BREAKAWAY • IP68 SEALING • MIL-C-38999 / AIR 7304 COMPATIBLE
The 221 is BERNIER Connect’s quick-release connector for airborne applications. Designed for military and civil aircraft and helicopters, it provides all types of communication between onboard equipment and external connections — with fast, one-hand disconnection, reliable IP68 sealing, and compliance with MIL-C-38999 electrical specifications and AIR 7304 environmental requirements.
Fast disconnection and robust sealing for airborne communication systems
The 221’s defining feature is its quick-release mechanism: a traction-based disconnect, enabling fast and safe uncoupling in operational conditions — without tools, without rotation. Its 100% scoop-proof contact protection prevents damage during mating, even in low-visibility or gloved-hand conditions. Vibration resistance tested at 10g from 55 Hz to 2,000 Hz over 6 hours confirms its suitability for airborne platforms subject to sustained structural vibration.
Configurations
Plug on cable — straight backshell Ø 7 mm or Ø 4.5 mm, 10 male or female contacts (AWG 20)
Receptacle on panel — with or without panel sealing, 10 male or female contacts (AWG 20)
Extension on cable — straight backshell Ø 7 mm with or without panel fixing, 10 male or female contacts (AWG 20)
Metallic protective cap for receptacle — ref. 22111006
MECHANICAL AND CLIMATIC CHARACTERISTICS
| Locking | Breakaway — traction force 25N ≤ F ≤ 40N |
| Operating temperature | -45°C to +125°C |
| Nbr of mating-unmating cycles | 500 operations |
| Contact protection | 100% scoop-proof |
| Vibration resistance | 55Hz at 2000Hz at 10g (6 hours) |
| Fluid resistance | Hydrocarbon and oils |
ELECTRICAL CHARACTERISTICS
| Nbr. of contacts | 10 |
| Gauge - AWG | 20 |
| Types of contacts | Crimp contacts |
| Working voltage | 1,800V max at 50 Hz |
| Current rating per contact | 7.5A max per contact |
| Contact resistance | ≤ 10 mΩ at 25°C |
| Insulating resistance | > 5000 MΩ |
| Crosstalk | < 110 dB at 8 kHz |
| Dielectric strength | 500 Vca, 50 Hz |
| EMI RFI Protection | Yes |
MATERIALS
| Connector shell | Aluminum |
| Connector shell plating | Black chrome |
| Insert | PPS / Silicone |
| Contacts | Copper alloy plated with gold overnickel |
| Shielding ring | Beryllium copper |
| Backshell | Aluminum |
| Backshell plating | Black chrome |
- Last update:21/04/2026
- Norme(s) : MILC38999
APPLICATIONS
- Civil aeronautics: onboard communication systems, aircraft and helicopter intercom interfaces
- Military aeronautics: cockpit radios, flight crew accessories, onboard electronics
- Ground support equipment requiring quick-release airborne-grade connectors
- Any airborne platform requiring fast, reliable connector disconnect under operational conditions
