MMC MD connector — compact breakaway, 20 contacts
• COMPACT • EMC REINFORCEMENT • LOW PROFILE
The MMC MD is a compact stainless steel breakaway connector with 20 contacts and mixed-gauge configuration, available with or without PCB integration. IP68 sealed and EMI/RFI shielded, it is designed as a custom-adaptable solution for equipment manufacturers requiring a tailored connector that fits their specific PCB and housing constraints.
Custom-fit breakaway connector for PCB and non-PCB configurations
The MMC MD addresses integration challenges where both the connector footprint and the PCB interface must be adapted to the equipment design. Its mixed-gauge contact layout — 2 contacts at AWG 22 and 18 contacts at AWG 28 — allows simultaneous power and signal transmission within a single compact connector body. Available in with-PCB and without-PCB variants, it supports flexible integration into custom rugged equipment.
LOW PROFILE
EMC REINFORCEMENT
20 CONTACTS
MECHANICAL AND CLIMATIC CHARACTERISTICS
| Locking | Breakaway |
| Operating temperature | -55°C to +125°C |
| Nbr of mating-unmating cycles | up to 5000 cycles |
| Sealing | IP68 connected and disconnected |
| Corrosion resistance (Salt spray) | Stainless steel : 96 hours |
| Fluid resistance | Hydrocarbon and oils |
ELECTRICAL CHARACTERISTICS
| Nbr. of contacts | 20 contacts |
| Gauge - AWG | 22 (4 cts) 28 (16 cts) |
| Types of contacts | PCB pins or solder cup |
| Operating voltage | 28 V max |
| Current rating per contact | 5A (4 cts) 1A (16 cts) |
| Contact resistance | ≤20 mΩ |
| Insulating resistance | > 100 MΩ. under 100VDC |
| Dielectric strength | 500 Veff à 50 Hz. |
| EMI RFI Protection | Yes |
MATERIALS
| Connector shell | Stainless steel |
| Connector shell plating | Sandblasting |
| Insert | Thermoplastic |
| Contacts | Copper alloy plated with gold over nickel |
| Shielding ring | Beryllium copper plated with gold over nickel |
| Backshell | Aluminum |
| Backshell plating | Black Chrome over nickel plating |
- Last update:10/05/2026
APPLICATIONS
- Land defense: custom-integrated equipment, rugged handheld devices
- C4ISR and tactical communication systems with specific PCB form factors
- Security: portable field equipment requiring mixed power and signal connectivity
- Industrial robotic systems with embedded electronics
