The MIL-DTL-38999 (originally MIL-C-38999) series connector is a widely used circular connector with high reliability and versatility. This series of connectors has a wide range of applications in military, aviation, aerospace, and some extreme environments. The following are the main classifications and characteristics of MIL-DTL-38999 series connectors:


classification

The MIL-DTL-38999 series connectors can be divided into multiple series based on their design features and application scenarios, including but not limited to:


Series I:

Features: Quick disconnect bayonet coupling system for blind mating. By using appropriate accessories, it can withstand high vibration, severe wind and moisture issues (SWAMP).

Design: The "anti shovel" design uses a long socket housing, making it almost impossible to damage the exposed contact pins when the mating plug is raised during a hurried or accidental connection process.

Series II:

Features: This version is lighter in weight, flatter in appearance, and features a bayonet coupling, making it suitable for situations without high vibration and swamp issues.

Design: It is not a spoon proof design, but has the characteristics of lightweight and compact.

Series III:

Features: Threaded version, used for normal mating, with anti vibration properties. Has swamp and shovel resistant advantages.

Design: Commonly used in applications that require high vibration resistance, such as military and aviation equipment.

Series IV:

Features: Breakthrough lock version for blind mating, simply rotate 90 degrees to engage or disengage. It has very strong vibration resistance and the advantages of being swamp and shovel resistant.

Design: Easy to connect and disconnect quickly, while maintaining high reliability and vibration resistance.

Common characteristics

In addition to the unique design features of each series, the MIL-DTL-38999 series connectors also have the following common characteristics:


High reliability: This series of connectors is designed to be sturdy and almost foolproof, capable of meeting various demanding environmental requirements.

Multifunctionality: Supports multiple signal and power transmission to adapt to different application scenarios.

Environmental adaptability: The operating temperature range for all series is typically -65 ° C to+200 ° C, and can withstand extreme temperature conditions.

EMI/RFI shielding: Provides excellent electromagnetic interference (EMI) and radio frequency interference (RFI) shielding performance, protecting the integrity and stability of signal transmission.

High density: With the development of technology, this series of connectors continues to evolve to support higher data speeds and frequencies, providing higher contact density.

Durability: The advancement of materials science has made the housing of connectors more lightweight, corrosion-resistant, and durable. For example, connectors with composite material housings can have a durability of up to 1500 insertions and removals.

application area 

The MIL-DTL-38999 series connectors are widely used in fields such as aviation, aerospace, military systems, Formula One racing, America's Cup sailboats and yachts that require high reliability and extreme environmental adaptability. In addition, with the development of technology, this series of connectors is gradually being applied in other fields such as industrial equipment, medical equipment, 5G equipment, etc.


In summary, the MIL-DTL-38999 series connectors play an important role in multiple fields due to their high reliability, versatility, and environmental adaptability.