1、MIL-DTL-12883F 18 February 2003 SUPERSEDING MIL-PRF-12883E 25 May 1995 DETAIL SPECIFICATION SOCKETS AND ACCESSORIES FOR PLUG-IN ELECTRONIC COMPONENTS, GENERAL SPECIFICATION FOR This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. Th
2、is specification covers the general requirements for sockets and socket accessories for plug-in electronic components, such as electron tubes and related electronic devices, plug-in capacitors, crystal units, batteries, vibrators, relays, transistors, coils, etc. (see 6.2). Statistical Process Contr
3、ol (SPC) techniques are required in the manufacturing process to minimize variation in the production of sockets and accessories supplied to the requirements of the specification. See 6.2 for restrictions on intended use and application. 1.2 Classification. 1.2.2 Part or Identifying Number (PIN). Th
4、e PIN consists of the letter “M“, the basic number of the specification sheet, and an assigned dash number as shown in the following example: M 12883/1 -01 Military designator Specification Dash number sheet number 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specifi
5、ed in sections 3 and 4 of this specification. This section 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 th
6、ey must meet all specified requirements documents cited in sections 3 and 4 of this specification, whether or not they are listed. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, Defe
7、nse Supply Center Columbus, Attn: VAI, 3990 East Broad Street, Columbus, Ohio, 43216-5000 by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. AMSC N/A 1 of 31 FSC 5935 DISTRIBUTION STATEMENT A. Approved for public release; dis
8、tribution is unlimited. |NCH-POUND Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-12883F 2 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this d
9、ocument to the extent specified herein. Unless otherwise specified, the issues of these documents are those listed in the issue of the Department of Defense Index of Specifications and standards (DODISS) and supplement thereto, cited in the solicitation. SPECIFICATIONS DEPARTMENT OF DEFENSE MIL-C-39
10、029 - Contacts, Electrical Connector, General Specification for. MIL-M-24519 - Molding Plastics, Electrical, Thermoplastic. MIL-S-24251 - Shields, Retainers (Bases), and Adapters, Electron Tube, Heat Dissipating General Specification for (See supplement 1 for list of associated specification sheets
11、and military standards). STANDARDS FEDERAL FED-STD-H28 - Screw-Thread Standards For Federal Services. DEPARTMENT OF DEFENSE MIL-STD-202 - Electronic and Electrical Component Parts. MIL-STD-790 - Standard Practice for Established Reliability and High Reliability Qualified Products List (QPL) Systems
12、for Electrical, Electronic, and Fiber Optic Parts Specifications. MIL-STD-810 - Environmental Engineering Considerations and Laboratory Tests. MIL-STD-1285 - Marking of Electrical and Electronic Parts. MIL-STD-1344 - Test Methods for Electrical Connectors. (Unless otherwise indicated, copies of fede
13、ral and military specifications, standards, and handbooks are available from the Standardization Documents Order Desk, Building 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.) 2.2 Non-Government publications. The following documents form a part of this document to the extent specified herein.
14、Unless otherwise specified, the issues of the documents which are DoD adopted are those listed the issue of the DODISS cited in the solicitation. Unless otherwise specified, the issues of documents not listed in the DODISS are the issues of the document cited in the solicitation (see 6.2). ELECTRONI
15、C INDUSTRIES ASSOCIATION (EIA) EIA-557 - Statistical Process Control (SPC) Systems. (Application for copies should be addressed to the Electronic Industry Alliance, Corporate Engineering Department, 2500 Wilson Boulevard, Arlington, VA 22201.) Provided by IHSNot for ResaleNo reproduction or networki
16、ng permitted without license from IHS-,-,-MIL-DTL-12883F 3 AMERICAN NATIONAL STANDARDS INSTITUTE, INC. ANSI Z540.1 - Laboratories, Calibration and Measuring and Test Equipment. (Application for copies should be addressed to the American National Standards Institute, 25 West 43rdStreet, 4thFL., New Y
17、ork, NY 10036.) AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM B36/36M - Plate, Brass Sheet, Strip, and Rolled Bar. ASTM B194 - Copper Beryllium Alloy, Plate, Sheet, Strip, and Rolled Bar. ASTM B488 - Gold for Engineering Uses, Electrodeposited Coatings of. ASTM D116 - Ceramic Materials Vitr
18、ified for Electrical Applications. ASTM D150 - Loss Characteristics (AC) and Permittrvity (Dielectric Constant) of Solid Electrical Insulation. ASTM D709 - Materials, Laminated Thermosetting. ASTM D5948 - Compounds, Molding, Thermosetting. ASTM D4067 - Materials, Molding and Extrusion, Reinforced an
19、d Filled Polyphenylene Sulfide (PPS) Injection. ASTM D5205 - System for Polyetherimide (PEI) Materials. (Application for copies should be addressed to the American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.) SOCIETY OF AUTOMOTIVE ENGINEERS (SAE) SAE-A
20、MS-P-81728 - Plating, Tin-Lead (Electrodeposited). (Application for copies should be addressed to the Society of Automotive Engineers, 400 Commonwealth Drive, Warrendale, PA 15096-0001.) (Non-Government standards and other publications are normally available from the organizations that prepare or di
21、stribute the documents. These documents also may be available in or through libraries or other informational services.) 2.3 Order of precedence. In the event of a conflict between the text of this document and the references cited herein (except for related associated specifications, specification s
22、heets or MS standards), the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-1
23、2883F 4 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, the latter shall govern.
24、 3.1.1 Alternate materials, platings, and processes. The identified reference materials, platings, and processes have been established to provide assurances that sockets manufactured to this specification will properly interface to similar industry standard or government specified component intercon
25、nection systems without problems of electrochemical contamination of critical electrical or mechanical interfaces or generation of incompatible mechanical interface surface wear products. The manufacturers of sockets supplied to this specification are allowed to use alternate recognized industry sta
26、ndards for materials, platings, and processes. Alternate materials, platings, and processes used shall be coordinated with the qualifying activity as part of the qualification process. Use of alternates to those referenced guidance items by the supplier shall not result in inferior short or long-ter
27、m performance or reliability of supplied sockets as compared with sockets manufacture using the referenced materials, platings, or processes. Short or long term failures or reliability problems due to use of these alternates shall be the responsibility of the supplier. 3.2 Qualification. Sockets and
28、 accessories furnished under this specification shall be products which are authorized by the qualifying activity for listing on the applicable qualified products list at the time of award of contract (see 4.5 and 6.3). 3.2.1 Quality. 3.2.1.1 Statistical Process Control (SPC). The contractor shall i
29、mplement and use statistical process control techniques in the manufacturing process for parts covered by this specification. The SPC program shall be developed and maintained in accordance with EIA-557. The SPC program shall be documented and maintained as part of the overall reliability assurance
30、program as specified in MIL-STD-790. Evidence of such compliance shall be verified by the qualifying activity of this specification as a prerequisite for qualifications effective 12 months after the date of this document. 3.3 Materials. Example reference materials are identified herein. However, whe
31、n an example reference material is not identified, a material shall be used which will enable the sockets and accessories to meet the performance requirements of this specification. Acceptance or approval of a constituent material shall not be construed as a guaranty of acceptance of the finished pr
32、oduct. 3.3.1 Fungus resistance. Materials used in the construction of these sockets shall be fungus inert in accordance with MIL-STD-810, method 508.5, amount of growth none, rating 0. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-12883F 5
33、3.3.2 Ceramic. a. Dielectric constant shall not exceed .016 maximum at 1 MHz. Loss index shall be determined at 1 MHz as specified in ASTM D150 the following conditions apply: (1) Specimens shall be inch thick disks at least 3 inches in diameter, or inch thick plates, at lest 3 inches square. (2) Th
34、e specimens shall be immersed before application of the electrodes, in distilled water at a temperature of 23 2C for 48 hours +1. -0 hours. (3) The specimens shall be removed from the distilled water one at a time, rinsed in fresh distilled water, and all surface moisture on the specimens shall be r
35、emoved by drying with a clean dry, absorptive cloth or paper. (4) The electrodes shall be metal foil, applied with petrolatum. (5) The elapsed time between removal of the specimens from the water and completion of the measurements shall not exceed 6 minutes. b. Dielectric strength: The average diele
36、ctric strength shall be 200 to 239 volts/mil when tested as specified in ASTM D116, the following conditions apply: (1) Specimens shall be inch thick disks at least 3 inches in diameter, or inch thick plates, at least 3 inches square. The specimens shall be immersed before application of the electro
37、des, in distilled water at a temperature of 23 2C for 48 hours +1. -0 hours. (2) The specimens shall be removed from the distilled water one at a time, rinsed in fresh distilled water, and all surface moisture on the specimens shall be removed by drying with a clean dry, absorptive cloth or paper. (
38、3) The electrodes shall be metal foil, applied with petrolatum. (4) The elapsed time between removal of the specimens from the water and completion of the measurements shall not exceed 6 minutes. c. Flexural strength (modulus of rupture): Average flexural strength shall be 12,000-to 19,900 pounds/sq
39、. inch, as specified in ASTM D116, the following conditions apply: (1) Specimens shall be rods inch in diameter or inch square, by 6 inches. The top and side surfaces of ceramic bodies above the mounting surfaces shall be glazed. (2) All unglazed surfaces shall be treated with a Dow Corning DC-200,
40、General Electric SF-99, or Union Carbide L-45 silicone compound, or other silicone compound satisfactory to the responsible qualifying activity. (3) The silicone compounds shall be cured in accordance with the manufacturers recommendations. 3.3.3 Plastic. Unless otherwise specified (see 3.1), plasti
41、c material utilized shall be in accordance with SDG-F as specified in ASTM D5948, or plastic with a minimum of 20 percent glass filled thermoplastic in accordance with MIL-M-24519 or type PPS000G40A43443E11 in accordance with ASTM D4067 or type PEI0310M20A33449208C in accordance with ASTM D5205, col
42、or shall be optional providing that the material color used is contrasting to polarizing color. 3.3.3.1 Plastic washers. Laminated thermosetting plastic material for washers used for mounting on ceramic body-mount sockets shall be in accordance with ASTM D709 (see 6.2). 3.3.4 Conducting material and
43、 finish. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-12883F 6 3.3.4.1 Contacts and contact tabs. Unless otherwise specified, contacts and contact tabs shall be made from beryllium copper in accordance with ASTM B194. 3.3.4.1.1 Finish. Con
44、tacts and contact tabs shall be gold plated in accordance with ASTM-B488, type II, code C, class 1.27 (50 microinches) minimum over a suitable underplate except silver underplate shall not be used (see 6.2). 3.3.5 Accessories (metal saddles, strap nuts, and center shields). Unless otherwise specifie
45、d (see 3.1), metal saddles, strap nuts, and center shields shall be brass, or be fabricated from a material with equal or better properties to ASTM B36/36M, and shall be tin-lead plated (electrodeposited) in accordance with SAE-AMS-P-81728. The ground lug(s) and the terminal end of the center shield
46、 shall be hot solder dipped or coated. All surface treatments shall be electrically conductive (see 6.2). 3.3.6 Restricted material. 3.3.6.1 Waxes and varnishes. Unless otherwise specified, waxes or varnishes shall not be used. 3.3.6.2 Pure tin. The use of pure tin is prohibited see 6.2.2. The maxim
47、um amount of pure tin is 97 percent and the alloy material shall inhibit the growth of tin whiskers. 3.3.7 Recycled, recovered, or environmentally preferable materials. Recycled, recovered or environmentally preferable materials should be used to the maximum extent possible provided that the materia
48、l meets or exceeds the operational and maintenance requirements, and promotes economically advantageous life cycle costs. 3.4 Interface and physical dimensions. Sockets and accessories shall be of the physical dimensions specified (see 3.1). 3.4.1 Sockets. Sockets shall be capable of properly mating
49、 with the applicable plug-in base (see 3.1). 3.4.2 Threaded parts. All threaded parts shall be in accordance with FED-STD-H28 and shall have the specified fit after plating or other coating (see 3.1). All threaded parts shall engage by at least two full threads. 3.4.3 Contact cavities. The arrangement of contact cavities in the insulator bodies of sockets shall be as specified (see 3.1). Each contact cavity shall be fitted with a contact assembly so confined within the c
