1、 MIL-PRF-28876E 4 October 2004 SUPERSEDING MIL-C-28876D 9 JULY 1992 PERFORMANCE SPECIFICATION CONNECTORS, FIBER OPTIC, CIRCULAR, PLUG AND RECEPTACLE STYLE, MULTIPLE REMOVABLE TERMINI, GENERAL SPECIFICATION FOR This specification is approved for use by all Departments and Agencies of the Department o
2、f Defense. 1. SCOPE 1.1 Scope. This specification covers the performance requirements for circular, plug and receptacle style, multiple removable termini, fiber optic connectors that are for Department of Defense applications and that are compatible with multiple transmission element cables. Fiber o
3、ptic connectors specified herein cover a family of general purpose, interconnection hardware providing a variety of compatible optical coupling arrangements. Connector parts specified within this specification include connector shells, connector inserts, connector insert retention nuts, connector ba
4、ckshells, and connector dust caps. 1.2 Classification. Plug and receptacle styles, as specified (see 3.1), include straight, wall (panel) mounted, jamnut mounted, right angle and other connector configurations as required for cable system applications. 1.2.1 Termini classification. Termini are class
5、ified as described in MIL-PRF-29504. Note: Termini are not supplied with connectors procured to this specification. When termini other than those qualified to MIL-PRF-29504 are used, the requirements stated herein may not be met. Comments, suggestions or questions on this document should be addresse
6、d to Department of the Navy, Naval Sea Systems Command (SEA 05Q), 2531 Jefferson Davis Highway, Arlington, VA 22242-5160 or emailed to (fill in email address). Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at ww
7、w.dodssp.daps.mil. AMSC N/A FSC 6060 INCH-POUND Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-28876E 2 1.3 Part or Identifying Number (PIN). PINs to be used for connectors acquired to this specification are created as follows: M 28876/ XX X
8、XXXX X M prefix Specification number Connector specification sheet 4 or 5 character alpha-numeric Backshell designator (when specified) Example: M28876/01-A1P1M 2. APPLICABLE DOCUMENTS 2.1 General: The documents listed in this section are specified in sections 3 and 4 of this specification. This sec
9、tion does not include documents cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of documents c
10、ited in sections 3 and 4 of this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, th
11、e issues of these documents are those cited in the solicitation or contract (see 6.2). DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-S-901 - Shock Tests, HI (High-Impact) Shipboard Machinery, Equipment And Systems, Requirements For. MIL-PRF-29504 - Termini, Fiber Optic Connector, Removable, General Speci
12、fication For. DEPARTMENT OF DEFENSE STANDARDS MIL-STD-1373 - Screw-Thread, Modified, 60 Stub, Double MIL-STD-2042 - Fiber Optic Cable Topology Installation Standard Methods For Naval Ships DEPARTMENT OF DEFENSE HANDBOOKS MIL-HDBK-454 - General Guidelines for Electronic Equipment. Provided by IHSNot
13、for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-28876E 3 (Copies of these documents are available online at http:/assist.daps.dla.mil/quicksearch/ or www.dodssp.daps.mil or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelp
14、hia, PA 19111-5094.) 2.2.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solici
15、tation or contract. NAVAL ENGINEERING STANDARD (NES) 713 - Determination of the Toxicity Index of the Products of Combustion From Small Specimens of Materials. (Application for copies should be addressed to Commander, Naval Surface Warfare Center, Dahlgren Division, Code B35, 17320 Dahlgren Road, Da
16、hlgren VA, 22448-5100.) 2.3 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. ASTM INTERNATIONAL ASTM-D-1149 - Rubber Deteriorati
17、on-Surface Ozone Cracking in a Chamber. (Application for copies can be obtained online at http:/www.astm.org/ or by contacting ASTM International, P.O. Box C700, 100 Barr Harbor Drive, West Conshohocken, PA, 19428-2959). INSTITUTE OF ELECTRICAL AND ELECTRONIC ENGINEERS (IEEE) IEEE-299 - Measuring th
18、e Effectiveness of Electromagnetic Shielding Enclosures. (DoD adopted) (Application for copies can be obtained online at http:/www.ieee.org/ or by contacting the Institute of Electrical and Electronic Engineers (IEEE), 445 Hoes Lane, Piscataway, NJ 08854-1331). TELECOMMUNICATIONS INDUSTRY ASSOCIATIO
19、N/ELECTRONIC INDUSTRIES ALLIANCE (TIA/EIA) EIA-359 - EIA Standard Colors for Color Identification and Coding. (DoD adopted) EIA-364-81 - Combustion Characteristics of Connector Housings, Connector Assemblies and Sockets. TIA/EIA-455 - Standard Test Procedure for Fiber Optic Fibers, Cables, Transduce
20、rs, Sensors, Connecting and Terminating Devices, and Other Fiber Optic Components. (DoD adopted) TIA/EIA-455-1 - Cable Flexing for Fiber Optic Interconnecting Devices. TIA/EIA-455-2 - Impact Test Measurements for Fiber Optic Devices. (DoD adopted) EIA/TIA-455-3 - Procedure to Measure Temperature Cyc
21、ling Effects on Optical Fibers, Optical Cable, and Other Passive Fiber Optic Devices. (DoD adopted). TIA/EIA-455-4 - Fiber Optic Component Temperature Life Test. (DoD adopted). TIA/EIA-455-5 - Humidity Test Procedure for Fiber Optic Components. (DoD adopted). Provided by IHSNot for ResaleNo reproduc
22、tion or networking permitted without license from IHS-,-,-MIL-PRF-28876E 4 TIA-455-6 - Cable Retention Test Procedure for Fiber Optic Cable Interconnecting Devices. (DoD adopted) TIA/EIA-455-11 - Vibration Test Procedure for Fiber Optic Components and Cables. EIA/TIA-455-12 - Fluid Immersion Test fo
23、r Fiber Optic Components. TIA-455-13 - Visual and Mechanical Inspection of Fiber Optic Components, Devices, and Assemblies. (DoD adopted) TIA/EIA-455-16 - Salt Spray (Corrosion) Test for Fiber Optic components. (DoD adopted). TIA/EIA-455-20 - Measurement of Change in Optical Transmittance. (DoD adop
24、ted) TIA-455-21 - Mating Durability of Fiber Optic Interconnecting Devices. (DoD adopted) TIA-455-26 - Crush Resistance of Fiber Optic Cable Interconnecting Devices. (DoD adopted). TIA/EIA-455-32 - Fiber Optic Circuit Discontinuities. (DoD adopted) TIA/EIA-455-34 - Interconnection Device Insertion L
25、oss Test. (DoD adopted) TIA/EIA-455-35 - Fiber Optic Component Dust (Fine Sand) Test. (DoD adopted). TIA-455-36 - Twist Test for Fiber Optic Connecting Devices. EIA/TIA-455-42 - Optical Crosstalk in Fiber Optic Components. (DoD adopted) TIA/EIA-455-56 - Test Method for Evaluating Fungus Resistance o
26、f Optical Fiber and Optical Cable. (DoD adopted). TIA/EIA-455-71 - Procedure to Measure Temperature-Shock Effects on Fiber Optic Components. EIA/TIA-455-98 - Fiber Optic Cable External Freezing Test. TIA/EIA-455-107 - Determination of Component Reflectance or Link/System Return Loss Using a Loss Tes
27、t Set. (DoD adopted) TIA-455-189 - Ozone Exposure Test for Fiber Optic Components (Application for copies can be obtained online at http:/www.eia.org or by contacting the Telecommunications Industry Association/Electronic Industries Alliance, 2500 Wilson Boulevard, Suite 300, Arlington, VA 22201-383
28、4). 2.4 Order of precedence. In the event of a conflict between the text of this document and the references cited herein (except for related specification sheets), the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a spec
29、ific exemption has been obtained. 3. REQUIREMENTS 3.1 Specification sheets. The individual item requirements shall be as specified herein and in accordance with the applicable specification sheet. In the event of any conflict between the requirements of this specification and the specification sheet
30、, the latter shall govern. 3.2 Qualification. Fiber optic connectors and accessories furnished under this specification shall be products that are authorized by the qualifying activity for listing on the applicable qualified products list before contract award (see 4.4 and 6.3). The provisions of 4.
31、4.4 for retention of qualification are included in this requirement. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-28876E 5 3.3 Materials. Materials shall be as specified herein and in the applicable specification sheet. In all cases, mater
32、ials selected for use shall meet all qualification requirements as specified, and be of a type and quality to assure physical, chemical, and optical compatibility with the requirements of this specification. All materials used shall be nontoxic (see 3.3.5), nonnutrient to fungus (see 3.14.13) and ma
33、nufactured to good workmanship quality (see 3.10.4). Materials chosen shall be the lightest practicable material suitable for the intended use. Materials shall not interfere with or degrade the terminus cleaning operation and shall provide 20 year service. 3.3.1 Connector parts: Connector shells sha
34、ll be aluminum. Connector inserts shall be either aluminum or a polymer material. Backshells, insert retention nuts, and dust covers shall be either aluminum, corrosion resistant (CRES) steel, or a polymer material. 3.3.2 Finish. The resultant finish on all connector parts shall meet the requirement
35、s herein and be: a. Aluminum components: The finish used for external parts shall minimize reflections, shall be electrolytically compatible with cadmium plate, and shall meet the requirements herein. The finish used for internal parts shall be corrosion resistant. b. CRES components: Unless otherwi
36、se specified (see 3.1), all exposed corrosion resistant steel parts shall be passivated and shall be treated to minimize reflections. CRES threads shall be treated in a manner to minimize galling and cold welding with mating parts. CRES parts which may be mated to non-CRES parts shall be treated to
37、minimize scratching or damage to mating components during mating operations. 3.3.3 Recovered materials. Unless otherwise specified herein, all equipment, material, and articles incorporated in the products covered by this specification shall be new and shall be fabricated using materials produced fr
38、om recovered materials to the maximum extent practicable without jeopardizing the intended use. The term “recovered materials“ means materials which have been collected or recovered from solid waste and reprocessed to become a source of raw materials, as opposed to virgin raw materials. None of the
39、above shall be interpreted to mean that the use of used or rebuilt products is allowed under this specification unless otherwise specifically specified. 3.3.4 Nonmetallic materials. Nonmetallic materials used in connector parts shall not be degraded by the use of solvents or cleaning agents, nor be
40、degraded at the specified environmental conditions. 3.3.5 Toxic and hazardous products and formulations. Materials used in the connectors, backshells, insert retention nuts, and dust covers shall not give off toxic or explosive fumes when exposed to flame. Materials used shall have no adverse effect
41、 on the health of personnel when used for its intended purpose. 3.3.6 Metals: Metals shall be corrosion resistant, or treated to be corrosion resistant. Unless otherwise specified (see 3.1), metals shall be nonmagnetic. 3.3.7 Dissimilar metals. The use of dissimilar metals in intimate contact should
42、 be avoided. When dissimilar metals are used in intimate contact with each other, protection against electrolysis and corrosion shall be provided. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-28876E 6 3.3.8 Sealing compounds. Sealing compo
43、unds shall not flow at the maximum specified storage temperature or exhibit cracking at the minimum specified storage temperature. 3.3.9 Lubricants. Lubricants used in the construction of the connectors shall satisfy the following criteria: a. Lubricants shall be permanent and shall not require repl
44、acement during the lifetime of the connector. b. Lubricants shall not migrate to the optical interfaces resulting in the degradation of optical performance. c. Lubricants shall be useful over the environmental conditions specified herein. d. Lubricants shall not be affected by cleaning solvents. 3.4
45、 Design and construction. Connector parts shall conform to figures A-1 through A-8, and as specified (see 3.1). 3.4.1 General. Connectors shall be designed to be compatible with optical fibers and cables as specified (see 3.1). 3.4.2 Seals. Seals shall provide environmental isolation for the optical
46、 contact junctions and connector interior parts. Grommets, O-rings, interfacial seals, boots, gaskets, or other sealing devices, as needed by the connector design, shall accomplish their intended purpose and meet all test requirements as specified herein. 3.4.2.1 Optical junction sealing. Optical ju
47、nctions shall be sealed against moisture and contamination as specified herein. 3.4.2.2 Cable sealing. Connectors shall seal the terminating cables as specified herein. 3.4.3 Interchangeability and interoperability. Connector parts shall be interchangeable and interoperable as specified in 3.4.3.1 a
48、nd 3.4.3.2. 3.4.3.1 Interchangeability. All connector parts having the same military Part or Identifying Number (PIN) shall be physically and functionally interchangeable without need for modification of such items or of the mating equipment. 3.4.3.2 Interoperability. All connectors of the same PIN
49、shall be interoperable. Upon qualification of the first manufacturer, all subsequent manufacturers shall provide proof of interoperability with each qualified manufacturer as specified in 4.7. The connectors shall meet the requirements of 3.11.1, 3.12.3 and 3.12.4 for each specified interoperability condition (see 4.7). 3.5 Connectors parts. 3.5.1 Shells. The connector shells shall retain the connector insert. 3.5.1.1 Plugs: Plugs shall be of the inline (straight), 45, and 90
