D38999/26WE8PB

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The D38999/26WE8PB is a circular connector typically used in the military and aviation fields. It is a circular shell that can be mated with a variety of contactstyles to create an electrical interconnect assembly. This section will discuss the application fields of the D38999/26WE8PB and the working principle behind it.

Application Fields

The D38999/26WE8PB is designed for applications that require reliable high density electrical connection and high levels of shock and vibration resistance. It is produced in a range of sizes and may alternatively be referred to as MIL-DTL-38999 Series I or Series III. It is often used in welding applications, vehicles, ground support equipment, and harsh environment applications such as avionics, space, extreme temperature, military and MRO. The D38999/26WE8PB has U.S. and NATO stock numbers for different size and components.

Design & Working Principle

The D38999/26WE8PB is a high performance cylindrical connector. The shell is composed of aluminum or stainless steel which ensures its robust construction and long service life. It includes an interference fit between the latching lever and the shell, and is able to provide superior environmental protection. The design also allows the use of a greater number of pins per size for applications needing a high level of density. The connector can also protect against shock and vibration, as the contacts with the circular shell feature a split-jam nut, which ensures additional ground integrity.

The pin type contacts are made to a tolerance in order to assure a good high-speed connection. The contacts are loaded into the connector shells and inserted into an alignment sleeve in order to prevent the contacts from being pinned in the wrong misalignment. Internal contacts are sealed to prevent moisture or air from entering the connection. The contact pattern supports power and signal configurations.

In addition, the connector includes an anti-decoupling feature, which ensures that the electrical contacts remain secure even if external forces attempt to separate the mated connectors. The inner side of the shell features threaded panels and a ring nut that mates with corresponding components, and the outer side of the shell has tear-off or pull-tabs for quick unmating. The inner housing is designed to prevent the contacts from loosening or vibrating off and to reduce external electrical and Radio Frequency Interference (RFI).

Conclusion

The D38999/26WE8PB is a reliable circular connector that is utilized in multiple application fields that need high-powered connection with high environmental protection. It has several features that provide superior shock and vibration resistance, reliable ground integrity, and anti-decoupling capabilities. It is also built from strong aluminum or stainless steel to ensure a long service life and superior connection. The working principle allows for a high number of pin contacts per size for dense connections.The D38999/26WE8PB is a good choice for applications where force, shock, vibration, and environmental protection must be taken into consideration.

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