The MIL-DTL-38999 series connector is a circular crimping connector widely used in military, aerospace, and other fields. It includes multiple series such as I, II, and III to meet different environmental and application requirements. The following is a detailed introduction to MIL-DTL-38999 series I, II, and III connectors:

1、 MIL-DTL-38999 series I connector

Features: Mainly used for blind coupling of quick disconnect card coupling systems. By using appropriate accessories, it can withstand high vibration, severe wind and moisture issues (SWAMP). The "anti shovel" design uses a long socket housing, which makes it almost impossible to damage the exposed contact pins when the mating plug is raised during a hurried or accidental connection process.

Application scope: Suitable for situations that require quick connection and disconnection, as well as working in harsh environments such as high vibration and humidity.

2、 MIL-DTL-38999 Series II Connector

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. It's not a spoon proof design.

Application scope: Suitable for situations with strict requirements for weight and size, and relatively stable working environment.

3、 MIL-DTL-38999 series III connector

Features: Threaded version, used for normal mating, with anti vibration properties. Has swamp and shovel resistant advantages. Its shell is made of composite material, which is 40% lighter than aluminum, with four times higher corrosion resistance and durability up to 1500 insertions and removals. In addition, this series of connectors also integrates technical features such as EMI shielding with column corridors and high durability anti vibration couplings, providing excellent plug-in durability, anti vibration decoupling, EMI shielding, and environmental sealing.

Application scope: Widely used in high-end fields such as aerospace, military, shipborne, as well as precision manufacturing applications that require high reliability and performance.

4、 Commonality

Working temperature range: The working temperature range of MIL-DTL-38999 series I, II, and III connectors is -65 to+200 º C.

Contact specifications: This series of connectors supports multiple contact specifications, such as 22, 20, 16, and 12 contacts, suitable for power and signal systems, as well as coaxial and dual core contacts.

Multifunctionality: The MIL-DTL-38999 series connectors are known for their versatility, which can meet the diverse needs of different fields and applications.

In summary, MIL-DTL-38999 series I, II, and III connectors have their own characteristics in terms of performance and application. Users can choose the appropriate series and model according to their specific needs. Meanwhile, with the continuous advancement of technology and the expansion of application fields, this series of connectors will continue to play an important role, providing reliable and efficient connection solutions for various high-end fields.