U.S. Military Connector Specifications - Alternative Connectors (Electrical and Fiber Optic) For Military Applications

Alternative Connectors (Electrical and Fiber Optic) For Military Applications

Selection of connector alternatives that are not defined by military specifications (MIL-C or MIL-DTL) can use either designated performance specifications (MIL-PRF) issued by the Department of Defense (DoD) or by using Commercial Item Descriptions (CID) issued by the General Services Administration (GSA) pursuant to DoD 4120.24-M, or by using standards developed by nationally and internationally recognized technical, professional, and industry associations and societies, collectively referred to as "Non-Government Standards Bodies" (NGSBs).

Performance Specifications: These connector specifications are intended to describe product that is essentially the same quality previously defined by familiar military specifications and built under the DoD's Qualified Manufacturer List (QML) product/supplier controlled system rather than the more-stringent Qualified Product Line (QPL) system.

• MIL-PRF-29504 (formerly MIL-T-29504) is a performance specification describing the general requirements for removable crimp and epoxy type fiber-optic termini for use in connectors and similar components. These termini are unique for military applications and must operate satisfactorily in systems under demanding conditions of 10 g's vibration (10 g's), shock (over 1000 g's), and temperature excursions (from -40 degrees C to +70 degrees C).

• MIL-PRF-28876 (formerly MIL-C-28876) is a performance specification describing for circular, plug and receptacle style, multiple removable termini, fiber-optic connectors that are for DoD applications and that are compatible with multiple transmission element cables. This specification describes a family of general purpose, interconnection hardware providing a variety of compatible optical coupling arrangements, and includes connector shells, connector inserts, connector insert retention nuts, connector backshells, and connector dust caps. These connectors are unique for military applications and must operate satisfactorily in systems under demanding conditions of 10 g's vibration (10 g's), shock (over 1000 g's), and temperature excursions (from -40 degrees C to +70 degrees C).

• MIL-PRF-39012 (formerly MIL-C-39012) is a performance specification describing the general requirements and tests for Radio Frequency (RF) connectors used with flexible RF cables and certain other types of coaxial transmission lines.

• MIL-PRF-31031 (formerly MIL-C-31031) is a performance specification describing the general requirements and tests for RF connectors used with flexible cables and certain other types of coaxial transmission lines.

• MIL-PRF-49142 (formerly MIL-C-49142) is a performance specification describing the general requirements and tests for RF, triaxial, connectors. These connectors and fittings are intended for use with biaxial cable and can be used for RF applications when more shielding is required, and they can also be used for serial digital transfer.

• MIL-PRF-64266 is a performance specification describing the performance requirements for circular, plug and receptacle style, multiple removable genderless termini, fiber optic connectors for DoD applications—including aerospace and maritime—and that are compatible with multiple transmission element cables. These fiber optic connectors cover a family of general purpose, interconnection hardware providing a variety of compatible optical coupling arrangements, including connector shells, connector inserts, connector backshells, connector backshell accessories, and connector dust caps. All connector styles are designed to assure proper orientation of the mating halves prior to mating, and provide engagement between mated shells prior to terminus engagement and have the termini so located as to be protected from handling damage. The plug and receptacle styles permit straight, wall (panel) mounted, jamnut mounted, right angle and other connector configurations.

Commercial Item Descriptions (CID): CIDs are specifications describing products that are defined by the connector manufacturer’s specification versus a military specification. These products may not be suitable for environmentally severe and/or critical, communication or tactical military applications; however the items may be an acceptable cost effective choice in less demanding military or commercial applications.