1、I Approved for Public Release; Distribution Unlimited. I I METRIC J DOD-E-8983C MIL-E-8983B 2 July 1973 MILITARY SPECIFICATION ELECTRONIC EQUIPMENT, AEROSPACE, EXTENDED SPACE ENVIRONMENT, GENERAL SPECIFICATION FOR This specification is approved for use by all departments . and agencies of the Depart
2、ment of Defense 1. “ SCOPE 1 , 1 Purpose. This specification sets forth the general requirements for the design and manufacture of electronic components and equipment for space vehicles. The detailed perf ormance and individual *test requirements shall be as specified in the equipment specification
3、or the contract. Beneficial comments (recommendations, additions, deletions) I and any .pertinent data which may be of use in improving this document should be addressed to: SAMSO/AW P.O. Box 92960, Worldway Postal Center, Los Angeles, CA 90009 Use the self-addressed Standardization Document Improve
4、ment Proposal (DD Form 1426) appearing at the end of this document or comment by letter, Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-t 1.2 Application. The requirements covered by this specification are applicable to electronic components and equ
5、ipment to be used on space vehicles (see 6.1) . This specification may also be used as a reference document to specify general requirements for electronic components to be used on launch vehicles, intercontinental ballistic missiles, or other vehicles. For those applications the term space vehicle“
6、is to be interpreted as the applicable vehicle. 2. APPLICABLE DOCUMENTS 2.1 Issues of documents. The following documents of the issue in effect on date of invitation for bids or request for proposal, form a part of the specification to the extent specified herein. “ Federal SEecifications “ QQ-M- 5
7、6 Magnesium Alloy, Sand Castings QQ-N-290 Nickel Plating (Electrodeposited) QQ-C-320 Chromium, Plating (Electrodeposited) Militarv SpecificatioEs MIL-M-3171 Magnesium Alloy, Processes for Pretreat- ment andprevention of Corrosion on MIL-C-554 1 Chemical Conversion Coatings on Aluminum and Aluminum A
8、lloys MIL-1-6866 Inspection, Penetrant Method of MIL-F-7179 Finishes and Coatings; Protection of Aero- space Weapon systems, Structures and Parts; General Specification for MIL-N-7513 Nomenclature Assignment, Contractors Method for Obtaining MIL-S-7742 Screw Threads, Standard, Optimum Selected Serie
9、s: General Specification for 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-S-8879 Screw Threads, Controlled Radius Root with Increased Minor Diameter, General Specifi- cations for MIL-S-13282 Silver and Silver Alloy MIL-S- 13572 Spring, Helic
10、al, Compression and Extension MIL-P-13949 Plastic sheet, Laminated, Metal Clad (for Printed Wiring) , General Specification for MIL-F-14072 Finishes for Ground Electronic Equipment MIL-N-18307 Nomenclature and Identification for Elec- tronic, Aeronautical and Aeronautical Sup- port Equipment Includi
11、ng Ground Support Equipment MIL-S-19500 Semiconductor Devices, General Specifi- cation for MIL-A-21180 Aluminum-Alloy Castings, High Strength MIL-C-24308 Connectors, Electric, Rectangular, Miniature Polarized Shell, Rack and Panel, General specification f0.r MIL-M-385 10 Microcircuits, General Speci
12、fication for MIL-C-38999 Connectors, Electrical, Circular, Minia- ture, High Density, Quick Disconnect, Environment Resistant, Removable Crimp Contacts, General Specification for MIL-C-39012 Connectors, Coaxial, Radio Frequency, General Specification for .MIL-M-45202 Magnesium Alloys,. Anodic Treatm
13、ent of MIL-M-45207 Magnesium Alloy (KlA) , Sand Castings MIL-S-45743 Soldering, Manual Type, High Reliability, Electrical and Electronic Equipment 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-_. DOD-E-8983C MI M 99999Ob 037b27L B “ DOD-E-8983C M
14、IL-1-46058 Insulating Compound, Electrical (for Coat- ing Printed Circuit Assemblies) MIL-“46062 Magnesium Alloy Castings, High Strength MIL-S-46844 Solder Bath Soldering of Printed Wiring Assemblies MIL-C-55544 Connectors, Electrical, Environment Re- sistant, for Use with Flexible Flat Con- ductor
15、Cable and Round Wire, General Specification for MIL-W-81044 Wire, Electric, Crosslinked Polyalkene, Crosslinked Alkane-imide Polymer, or Poly- arylene Insulated, Copper or Copper Alloy MIL-W-81381 Wire, Electric Polimide Insulated, Copper and Copper Alloy DOD-W-83575 Wiring Harness, Space Vehicle, D
16、esign and Testing MIL-C- 837 23 Connectors, Electric, Circular, (Environ- ment Resisting), Receptacles and Plugs, General specification for MIL-C-83733 Connectors, Electrical, Miniature, Rectan- gular Type, Rack to Panel, Environment Re- sisting, 200 Degrees C Total Continuous Operating Temperature,
17、 General Specifi- cat ion for Military Standards MIL-STD-29 Springs, Mechanical; Drawing Requirements for MIL-STD-198 Capacitors, Selection and Use of MIL-STD-454 Standard General Requirements for Elec- tronic Equipment MIL-STD-889 Dissimilar Metals MIL-STD-1512 Electroexplosive Subsystems, Electric
18、ally 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DOD-E-8983C Initiated, Design Requirements and Test Methods MIL-STD-1515 Fasteners used.in the Design and Construc- tion of Aerospace Mechanical Systems MIL-STD-1540 Test Requirements for Space V
19、ehicles M8-33540 Safety Wiring and Cotter Pinning, General Practices for (Copies of specifications, standards, drawings, and publi- cations required by contractors in connection with specific procurement functions should. be obtained from the contract- ing office or as directed by the contracting of
20、ficer.) 2.2 Other publications. The following documents form a part of this specification to the extent specified herein. Unless otherwise indicated, the issue in effect on date of invitation for bids or request for proposal shall apply. INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS IEEE-STD-200
21、 Reference Designations for Electrical (1975) and Electronics Parts and Equipment (with.ANS1 Y32.16-1975) (Application for copies should be addressed to the Institute of Electrical and Electronics Engineers, Inc., 345 East 47th Street, New York, New York 10017.) 3 . REQUIREMENTS 3.1 Order of precede
22、nce. In the event of conflicts between any of the documents referenced herein and the con- tents of this specification, the contents of this specifica- tion shall be considered the superseding requirements. 3.2 Sugclementarv specifications and standards. When this specification and the documents ref
23、erenced herein fail to provide a suitable specification. or, standard, other appropriate specifications or standards may be used. If the documents referenced in this specification do not provide the contractually required reliability, quality level, or technical performance, they should be interpret
24、ed as being 5 - TA. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DOD-E-8783C MI 7979706 037b273 L “ “ “ referenced to limit the variety of the physical and functional parameters to the extent practicable. In those cases, the referenced specificati
25、ons should be the basis of contractor specifications that would add, delete, or change specific requirements. When a detail or general military specification exists for the class of material required, the contractors specification shall reference the existing military specification and set forth onl
26、y the needed new requirements and deviations. If required by the contract, the supplementary specifications that are prepared by the contractor shall be submitted to the contracting officer for review or approval prior to their use. When required by the contracting officer, the contractor shall prov
27、ide data sub- stantiating the supplementary requirements and shall provide samples for testing. The use of contractors specifications shall not constitute waiver of Government inspections requirements. 3 . 3 General desiqn requirements 3.3.1 Selection of parts. materials, and processes. Unless other
28、wise specified in the contract, the parts, materials, and processes shall be selected and controlled in accordance with contractor established and documented procedures to satisfy the specified requirements. The selection and control procedures shall emphasize quality and reliability to meet the mis
29、sion requirements and to minimize total life cycle costs for the applicable vehicles. An additional objective in the selection of parts, materials, and processes shall be to maximize commonality nd thereby minimize the variety of parts, related tools, and test equipment required in the fabrication,
30、installation, and maintenance of the vehicle. Whenever a selected specification provides more than one characteristic or tolerance for an item, the equipment manufacturer shall use items of broadest characteristics in the equipment and of the greatest allowable tolerances that- will fulfill the perf
31、ormance requirement of the equipment. When acceptable items of higher than minimum quality are readily available, the utilization of which would not increase the life cycle costs, they may be used. When maximum physical dimensions of an item are indicated in the selected specification for the item,
32、all new equipment shall be designed to accommodate the maximum physical size specified so that all parts having the same type designation will be physically interchangeable in the equipment. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DOD-E-898
33、3C 3.3.1.1 Equipment performance. The requirements of this specification with regard to parts, materials, and processes shall not relieve the contractor of the responsibility for complying with all equipment performance and other requirements set forth in the equipment specification or the contract.
34、 3.3.1.2 Parts to meet reliability requirements. When the contract or equipment specification includes a reliabil- ity requirement that is based on a previous calculation and demonstration of the equipment reliability, the parts used shall be equal to or more reliable than those used in the demonstr
35、ation equipment. 3.3.1.3 Deratinq. A documented derating policy shall be uniformly applied in the selection and application of parts and materials. This derating policy shall address application and environmental factors such as voltage, current, power, temperature, vibration, shock, acceleration, r
36、adiation, and duty cycles. The part application shall consider the maximum rating variation expected over the stated mission life including derating due to extended storage or other possible service conditions that may be applicable. Parts and materials shall not be subjected to any conditions excee
37、ding the applicable derated values. 3.3.2 Materials 3.3.2.1 Restricted materials. Mercury, compounds containing mercury, zinc parts, zinc plating, cadmium parts, and cadmium plated parts shall not be used except as may be required for the internal functioning of batteries or other devices. Corrosive
38、 (acetic acid evolving) silicone sealants, adhesives, and coatings shall not be used. Wood shall not be used. Pure tin or tin electroplate shall not be used except when refused, reflowed, or alloyed with lead, antimony, or bismuth. *- t. 3.3.2.2 Dissimilar metals. Protection of dissimilar metal comb
39、inations shall be in accordance with MIL-STD-889. The worst case environment anticipated for the equipment, including storage environment, shall be considered. 3.3.2.3 Castinqs. Castings shall be in accordance with MIL-STD-454, Requirement 21, except aluminum alloy castings shall be in accordance wi
40、th MIL-A-21180 and 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DOD-E-8983C magnesium alloy castings shall be in accordance with QQ-“56 or MIL-“46062. For high vibration damping applications, magnesium castings shall be in accordance with MIL-“4
41、5207. For applications where minimum outgassing is permitted in space vacuum or where hermeticity in space vacuum is required, castings shall not be impregnated to seal porosity. 3.3.2.4 Aluminum alloy for bondinq or qroundinq. Where bonding or grounding is necessary, aluminum 1100, alloys 3003, 505
42、2, 6053, 6061, 6063, 7072, or equally corrosion-resistant alloys, shall be used. They may be used without other surface treatment. 3.3.2.5 Ferrous alloys. Ferrous alloys shall be in accordance with MIL-STD-454, Requirement 15. 3.3.2.6 Maqnesium and maqnesium alloys. Although other materials are gene
43、rally preferable, magnesium that is finished in accordance with the requirements of this specification may be used to achieve a weight reduction or for the damping characteristics it provides. Care shall be taken to avoid corrosion or electrolytic action. 3.3.2.7 Funqus-inert material. Where practic
44、able, fungus-inert materials that are in accordance with MIL-STD- 454, Requirement 4 shall be used. In those cases where other materials are required, they shall be selected based upon substantiated data concerning their resistance to fungus growth in the anticipated usage environment. 3.3.2.8 InE2l
45、atozsL“- insulating “.-L-“ materials and dielectric materials. Insulators, insulating materials, and dielectric materials shall be in accordance with MIL-STD- 454, Requirement 11. For space vehicles that will operate at altitudes above 1000 kilometers, insulating materials or finishes having a resis
46、tivity greater than 10 megohm-meters shall not be used except in applications where charge buildup will not be excessive. 3.3.2.9 . Arc-resistant materials. Arc-resistant mater- ials shall .be in accordance with MIL-STD-454, Requirement 26 . 3 . 3.2.1 O Flammable materials. Flammable materials shall
47、 be in accordance with MIL-STD-454, Requirement 3. 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-DOD-E-8983C 3.3.2.11 Explosive fumes. Parts and materials shall not liberate gases which produce an explosive atmosphere under specified service cond
48、itions. 3.3.2.12 Orqanic fibrous material . The selection and application of organic fibrous material shall be in accordance with MIL-STD-454, Requirement 44. 3.3.3. Finishes. The finishes used shall be such that completed components and hardware items not covered by subsidiary specifications shall
49、be resistant to corrosion. The design goal should be that there would be no destructive corrosion of the. completed component when exposed to moderately corrosive environments such as industrial environments or exposure to. sea coast fog. Destructive corrosion shall be construed as being any type of corrosion which interferes with meeting the specified mechanical, thermal, or electrical performanc
