THDM® Series
MT Connector System
Amphenol Fiber Systems International (AFSI) has announced the latest addition to its high-density product portfolio. The THDM® is a MIL-PRF-28876-derived mechanical transfer (MT) rugged fiber optic connector for military and aerospace applications.
THDM® is modular, allowing multiple combinations of fiber types to be used in the same connector. The THDM connectors are available in 1-, 2-, 4-, and 8-MT configurations, supporting 24 to 192 fiber channels with industry-standard MT ferrules. The connector features M28876 or M38999 strain relief options.
The THDM® connectors also feature a ratcheting coupling nut and insert-to-insert bottoming to provide superior optical performance in high-shock and high-vibration applications. The connectors are sealed to IP68 standards to resist fluids and dust penetration. A variety of protective finishes are available to ensure durability over a wide range of environmental conditions. As with most AFSI products, they are available in stainless steel, brass, or marine bronze.
Features & Benefits
- 3 configurations: 2, 4 and 8 MT ferrules for up to 192 fiber channels
- Ratcheting coupling nut for high vibration environments (derived from M28876)
- IP 68 sealing
- Removable and replaceable MT ferrules
- Expanded beam capable
- Environmental –
– Operating temperature -54C to + 85C
– 500 cycles mating durability
– Vibration per MIL-STD-1344, method 2005 - Available in cadmium and nickel plated aluminum, stainless steel, PTFE and black anodize
- Performance:
– IL: 0.5dB nominal MM
– IL: 0.65dB nominal SM
Applications
- Military and Aerospace
- Shipboard
- Oil & Gas
Specifications
| Description | Measurement/Detail |
| Attenuation (Insertion Loss) | 0.75db max per connection (1.5 total), TIA/EIA-455-171 |
| Return Loss | -65dB Max RL HD-Optyx™ APC, TIA/EIA-455-107 |
| Mating Durability | 500 Cycles, TIA/EIA-455-21 |
| Vibration | TIA/EIA-455-11, Test Conditions II and VI |
| Mechanical Shock | TIA/EIA-455-14, Test Condition A |
| Thermal Shock | -40C to +85C, TIA/EIA-455-3 |
| Thermal Cycling | -40C to 85C, TIA/EIA-455-3 |
| Ozone Exposure | Per MIL-STD-1344A |
| Humidity | tia/eia-455-5, 10 cycles |
| Fluid Immersion | TIA/EIA-455-11 |
| Cable Retention | 400 pounds, TIA/EIA-455-6 |
| Impact | EIA/TIA-455-2 |
| Crush Resistance | MIL-STD-1344, Method 2008.1, 7 tests @ 1250 Newton |
| Cable Sealing Flexing | MIL-STD-1344, Method 2017 |
| Corrosion Resistance | 500 hour TIA/EIA-455-14 (CAD) |
| Connector, Backshells, and Dust Cover | Aluminum alloy, cad plate, 316 stainless steel, 303 stainless steel |
| Cable Sealing Strain Relief | Polyolefin, self-encapsulating |
MT THDM Blade™ Assembly
MT Assembly Drawing:
MT Assembly 3D Rendering:
MT Blade™ Assembly Part # Scheme:
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