Unlock the Potential of MIL-DTL-38999 I Series Connectors with Kaida
MIL-DTL-38999 I Series circular connectors are military-grade connectors specifically designed for communication purpose. This military connector offers high-density contact arrangements, making it suitable for military vehicles, soldier communication systems, and other connection applications requiring high reliability. These Mil-Spec connectors come in multiple receptacle mounting options to adapt to users' particular application needs.
General Information
- Compliant with MIL-DTL-38999 I series requirements
- Bayonet coupling for easy and efficient use, compact size, lightweight design, and high-density contacts
- Superior EMI/RFI shielding capabilities
- Five-keyway polarization enabling blind mating and error-proof insertion
- Versatile receptacle mounting options, such as boxed, wall, front loading, after loading, and jam nut
- Removable crimp contacts and anti-oblique mating design
- Multiple shell sizes (9 kinds) and contact arrangements to meet diverse requirements
- Unmatched vibration resistance for reliable performance
- Customizable shell materials and plating options to suit various environmental demands
- Sealed construction on mating faces and rear ends for excellent protection against environmental elements
- Compliance with M85049 standard for tail accessories
Applications of Circular Connectors
Our MIL-DTL-38999 I series circular connectors find applications in a wide range of industries where circuit signal connections are crucial.
Environments
Our MIL-DTL-38999 I series circular connectors excel in environments characterized by strong vibrations, sandstorms, and high humidity, making them ideal for demanding conditions.
Main Technical Performance
Mechanical Performance
- Diverse material options for shells, including aluminum alloy, stainless steel, and titanium alloy
- Insulation components crafted from high-quality thermosetting or thermoplastic materials
- Silicone rubber sealing gaskets and O-rings for reliable protection
- Plating finishes tailored to specific requirements: cadmium plating (B-class), stainless steel passivation (E-class), chemical nickel plating (F-class), aluminum alloy matte cadmium plating (FT-class), and titanium alloy (TA-class)
- Gold-plated copper alloy contacts available in crimp, solder, and printed circuit board configurations
- Impressive mechanical lifespan of 500 mating cycles
- Resilience to vibrations, including sinusoidal vibrations (10-2000Hz) at 294m/s² and random vibrations (100-1000Hz) with 1g²/Hz power spectral density
- Shock resistance against 3ms half-sine wave with peak acceleration up to 300g
Environmental Performance
- Temperature range: B-class (-65 ˚C to +175 ˚C), E and F class (-65 ˚C to +200 ˚C)
- Salt spray test results: B-class (500 hours), E and TA class (1000 hours), F-class (48/96 hours), FT class (96 hours)
- High humidity resistance: Up to 98% relative humidity at 40 ˚C
- Operating altitude: Up to 30,480 meters
Electrical Performance
Contact Resistance and Current Rating
| Contact No. | Diameter (mm) | Resistance(mΩ) | Current (A) |
| 22D | Ø0.76 | ≤12 | 5 |
| 20# | Ø1.00 | ≤5 | 7.5 |
| 16# | Ø1.60 | ≤2.5 | 13 |
| 12# | Ø2.40 | ≤1.5 | 23 |
| 10# | Ø3.15 | ≤1.0 | 40 |
Superior shielding capabilities, with minimum attenuation of 85dB from 100MHz to 1GHz and 50dB from 1GHz to 10GHz
Withstanding voltage (V):
| Service rating | M | N | I | II |
| Sea level | 1300 | 1000 | 1800 | 2300 |
| 21000m | 800 | 600 | 1000 | 1000 |
- Exceptional insulation resistance, exceeding 5000MΩ under normal conditions and 100MΩ under humid conditions
- Minimal shell-to-shell resistance to ensure efficient and reliable connectivity: B-class (≤2.5mΩ), F and FT-class (≤1.0mΩ), E and TA-class (≤50mΩ)
Other Performance
The MIL-DTL-38999 I series circular connectors also demonstrate superior resistance to moisture, salt spray (corrosion), fungi, and dust.
With a team of highly skilled R&D professionals and certifications in high-tech enterprise and quality management systems, Kaida exports its products to over 30 countries worldwide, earning a solid international reputation.
