ECA 710-1997 Requirements Guide for Space Grade Electrical Connectors《空间级电气连接器的要求指南》.pdf

1、ANSI/EIA-710-1997 Approved: August 6, 1997 EIA STANDARD Requirements Guide for Space Grade Electrical Connectors EIA-710 OCTOBER 1997 ELECTRONIC INDUSTRIES ASSOCIATION ENGINEERING DEPARTMENT NOTICE HA Enginewing Standards and Publications are designed to serve the public interest through eliminating

2、 misunderstandings between manufacturers and purchasers, facilitating interchangeability and improvement of products, and assisting the purchaser in selecting and obtaining with minimum delay the proper product for his particular need. Existence of such Standards and Publications shall not in any re

3、spect preclude any member or nonmember of EIA from manufacturing or selling products not conforming to such Standards and Publications, nor shall the existence of such Standards and Publications preclude their voluntary use by those other than EIA members, whether the standard is to be used either d

4、omestically or internationally. Standards and Publications are adopted by EIA in accordance with the American National Standards Institute (ANSI) patent policy. By such action, EIA does not assume any liability to any patent owner, nor does it assume any obligation whatever to parties adopting the S

5、tandard or Publication. This EIA Standard is considered to have International Standardization implication, but the International EIectrotechnical Commission activity has not progressed to the point where a valid comparison between the EIA Standard and the IEC document can be made. This Standad does

6、not purport to address all safety problems associated with its use or all applicable regulatory requirements. It is the responsibility of the user of this Standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations before its use. (From

7、Standards Proposal No. 35 14, formulated under the cognizance of the CE-2.0 Committee on National Connector Standards.) Published by ELECTRONIC INDUSTRIES ASSOCIATION 1997 Engineering Department 2500 Wilson Boulevard Arlington, VA 22201 PRICE: Please refer to the current Catalog of EIA, JEDEC, and T

8、IA STANDARDS and ENGINEERING PUBLICATIONS or Can Global Engineering Documents, USA and Canada (1-800-854-7179) International (303-397-7956) All rights reserved Printed in U.S.A. STD-EIA 710-ENGL 1777 3234bOU U58b184 527 .II 4. EIA-710 Table of Contents Page . Int.roduction . 111 Scope and obiective

9、. 1 1.1 Scope . 1 1.2 Objective . 1 General reference information . 2 2.1 Related documents . 2 2.2 Electrical connector categories . 3 2.3 NASA approved parts 4 Environmental category definitions . 6 3.1 Industry environmental definitions . 6 3.2 Military environmental definitions . 6 3.3 Space env

10、ironmental definitions 7 General reauirements 9 4.1 Design requirements 9 4.2 Prohibitions . 9 Test Drocedures . conditions, and screening reauiremen ts . 10 5.1 5.2 5.3 5.4 5.5 5.6 5.7 5.8 5.9 5.10 5.11 5.12 5.13 Visual and dimensional inspection (all types) 10 Durability 10 Mating and unmating for

11、ces / coupling torque (all types) . 10 Contact insertion, release and removal forces (nonhermetic: Cm) 11 Table 1 . 10 Dielectric withstanding voltage (all types) . 11 Insulation resistance (all types) 12 Contact retention (crimp removable types) . 12 Contact resistance (all hermetic types) . 13 Con

12、tact engagement and separation forces (all types except RF) 13 Humidity cycling . 14 Mechanical shock (specified pulse for all types) . 15 Materials tests: flammability, odor, toxicity (nonmetal shell) 15 Thermal vacuum outgassing (all types) 15 i EIA-710 5.14 5.15 5.16 5.17 5.18 5.19 5.20 5.21 5.22

13、 5.23 5.24 5.25 5.26 5.27 5.28 5.29 5.30 5.3 1 5.32 5.33 5.34 5.35 5.36 5.37 5.38 5.39 Vibration (all types) . 16 Thermal cycling (all types) 16 Salt spray corrosion (all non-gold plated types) 17 Magnetic permeability (types: D) . 17 Insert retention (types: C, D and M . 17 Air leakage (hermetic ty

14、pes: C, D and RF) . 17 Low level contact resistance (types: M and P) 18 Crimp tensile strength (Types: M and P) 18 Maintenance aging (nonhemetic types: C and D) 18 Solderability (types: D and M) . 19 Impact (special cases, C type only) . 19 EMI shielding (C type only) . 20 Firewall protection (C typ

15、e only) 21 Ozone (C type only) . 21 Atomic oxygen (nonmetal shell types: D, M and P) 21 Contact pin strength (D type only) . 21 Residual magnetism (D type only) . 22 RF insertion loss (RF type only) . 22 VSWR (RF type only) 22 Resistance to solder heat (types: D and M) . 19 Shell-to-shell conductivi

16、ty (C type only) 19 Table 2 . 20 Cable retention (D type only) . 21 Coupling proof torque (RF type only) . 22 Corona (RF type only) . 22 Flammability (all nonmetal shell types) . 23 W weathering (all nonmetal shell types) 23 6 Test tables for cross referencing Table 3: Screen test requirement vs . e

17、nvironmental category . 24 Table 4: Screen test vs . connector type 29 11 EIA-710 INTRODUCTION: This document is designed to be a reference guide and baseline in which minimum requirements are outlined for electrical connectors that will be used in any space environment. This document will be update

18、d as necessary. There are six space environmental categories defined as a means of providing a standard knowledge of space environmental conditions and as a reference for screening and testing. All electrical connectors are included in the scope of this document, and several main categories are defi

19、ned based on the current usage by the NASA community. 111 . EU-710 1 Scope and objective 1.1 Scope This requirements document is applicable to all types of single or multicontact electrical connectors including: circular, rectangular printed circuit, rectangular microminiature, rectangular D-submini

20、ature, rectangular rack and panel, coaxial, and hermetic. This document will be used to determine the minimum requirements for space applications. This document is not a mandatory requirements document but is for the purpose of providing guidance. For purposes of standardization and reference, sever

21、al space environments are defined and include: habitable pressurized modules, low earth orbit, geosynchronous earth orbit, transatmospheric vehicle, lunar surface, Martian surface. The environmental categories are designed to be used as a default when considering how to alter any test for a specific

22、 application. The environmental categories are meant for reference purposes. When performing any test or screening procedure the parameters of the operational environment can be used to govern the test conditions. All test EIA test procedures referenced are to be considered as the normative test pro

23、cedures. All military test procedures are referenced for information purposes. Any reference to the military or industry environments is only as a reference to the space environmental categories significant to this document. For actual military and industry environment parameters please consult the

24、appropriate military specifications or ELA documents. There are several tables and charts designed for cross-referencing which types of connectors need to be tested for which space environments and for cross-referencing what types of tests are necessary for what type of connector when being used in

25、any space environment. 1.2 Objective The objective of this document is to provide the information concerning what the minimum requirements are for all electrical connectors being used in any space flight application. This document is meant for guidance purposes and is not a procurement document. Onc

26、e screened by the requirements outlined in this document (and in accordance with project engineering documentation) with the appropriate results, a connector can be considered “space grade” for a given space environment category that governs all test conditions and requirements. If environmental par

27、ameters are not specified for any given application by project documentation the appropriate environmental category defined in this document can be used to govern all test conditions. 1 EM-7 1 O 2 General information 2.1 Related documents The following documents may or may not be referenced in the b

28、ody of this requirements document and can be used as references to the material contained in this document. NASA Specifications and Standards NASA Approved Parts Listing (formally known as MIL-STD-975). NHB8060.1 (Flammability, Odor, Offgassing, and Compatibility Requirements for Materials in Enviro

29、nments that Support Combustion) . 40M.38277, Circular, miniature, high density, environment resisting, electrical connector. 40M3 8298, Circular, miniature, special, environment resisting, electrical connector. 40M39569, Circular, miniature, environmental resisting, 200 “C, electrical connector. GSF

30、C-S3 1 1 -P-4, Rectangular, space flight, electrical, connector. GSFC-S3 1 1 -P- 1 O, Subminiature, electrical and coaxial contact, electrical, connector. Military Specifications and Standards MIL-STD- 1344 Test Methods for Electrical Connectors MIL-STD-202: Test Methods for Electronic and Electrica

31、l Component parts MIL-C-501 5, Circular, threaded, AN type, electrical, connector. MIL-C-26482, Circular, miniature, quick disconnect, environment resisting, electrical, connectors, receptacles and plugs. MIL-C-38999, Circular, miniature, high density, quick disconnect, (bayonet, threaded and breech

32、 coupling), environment resisting, removable crimp and hermetic contacts, electrical, connectors. MIL-C-39012, Coaxial, radio fiequency, electrical, connector. MIL-C-55302, Printed circuit, electrical, connector, subassembly and accessories. MIL-C-24308, Rectangular, miniature, polarized shell, crim

33、p and solder contacts, electrical connector. MIL-C-39029, Electrical contacts. MIL-C-835 13, Rectangular, microminiature, polarized shell, rack and panel, electrical connector. 2 EU-7 1 O Industry Specifications and Standards ASTM E595 Vacuum Outgassing ASTM D695 Flammability EIA-3 64-B (Electrical

34、Connectors Test Procedures) EIA-3 64-02 (Air Leakage) EIA-364-05 (Contact InsedRemove) EIA-364-06 (Contact Resistance) EIA-364-08 (Crimp Tensile Strength) EIA-364-09 (Durability) EIA-364- 13 (Matinflnmating Forces) EIA-364-14 (Ozone) EIA-364-18 (Visual Inspection) EIA-364-20 (Withstanding Voltage) E

35、IA-3 64-2 1 (Insulation Resistance) EIA-364-23 (Low-level Contact) EIA-364-24 (Maintenance Aging) EIA-364-26 (Salt Spray) EIA-364-27 (Mechanical Shock) EIA-364-28 (Vibration) EIA-3 64-3 1 (Contact Retention) EIA-364-32 (Thermal Shock) EIA-364-35 (Insert Retention) EIA-3 64-37 (Contact EngagemedSepar

36、ation) EIA-3 64-42 (Impact) EIA-3 64-44 (Corona) EIA-364-45 (Flame) EIA-364-54 (Magnetic Permeability) EIA-364-56 (Solder Heat Resistance) EIA-364-66 (EM Shielding) 2.2 Electrical connector categories Circular, power: C D-Subminiature Rectangular: D Microminiature Rectangular: M Printed circuit, Rec

37、tangular: P Coaxial: RF Rack and panel, rectangular: A Hermetic: H 3 EM-710 2.3 NASA approved parts listing (MILSTD-975): Specification number: 40M38277, Circular, C Miniature, High-Density, Environment Resistant, Low-Silhouette, (backshells and contacts available with connector) Specification numbe

38、r: 40M38298, Circular, C Miniature, Environment Resistant, Special, (backshells and contacts available with connector), + 200 “C. Specification number: 40M39569, Circular, C Miniature, Environment Resistant, (backshells and contacts available with connector), + 200 “C Specification number: MLC-5015,

39、 Circular, C Threaded Coupling, AN type, Circular Rear Release Crimp Contacts, Hermetic Solder contacts, Contact sizes 8 and larger only.: MS3450, MS3452, MS3454, MS3456, MS3459. Specification number: MIEC-26482, Circular, C Series 2, , Miniature, Quick Disconnect, Environment Resistant MS3470, MS34

40、72, MS3474-76, MS3449. Specification Number: MIL-C-38999, Circular, C Miniature, High Density, Quick Disconnect, Environment Resistant, Removable Crimp and Hermetic Solder Contacts: Series 1, Bayonet Coupling, MS27466 - MS27468, MS27470, MS27471, MS27656, MS27662 Series 2, Bayonet Coupling, Low Silh

41、ouette: : MS27472, MS27474, MS27477, MS27478, MS27484, MS27497 Series 3, Scoop Proof, Threaded Coupling, Triple Start, Self-Locking: D38999/20, /21, /23 - /27. Series 4, Scoop Proof, Breech Coupling: D38999/40 - /48. Specification number: MIEC-39012, Coaxial, RF Radio Frequency: M39012/01-501,403, M

42、39012/03-501,403, M39012/04-0001,-0002,-0003, M39012/26-101,-102,-018, M39012/28-101, -102, -018, M39012/34-0001, -0002, M39012/55- 3006, -3007, “3009, -3010 M39012/57-3006, -3007, -3009, -3010 M39012/60-3001, -3002, M39012/61-3001, -3002 Specification number: MIGC-55302, Printed Circuit, P Printed

43、Circuit, Subassembly and Accessories, Non Environment Resistant, M55302/55- M55302/66. 4 STD-EIA 710-ENGL L997 m 3234bU0 058b393 7b7 9 EIA-710 Specification number: MIL-C-24308, Rectangular, D Rectangular, Miniature, Rack for sizes 20 and 16, 89 N (20 Ib-f); for size 12; 133 N (30 lb-f) for size 1 O

44、 and 156 N (3 5 lb-f). D Type: The mating/unmating forces as well as the contact insertion and removal forces shall meet the requirements listed in 5.1.3 and 5.1.4. 18 STD-EIA 7LO-ENGL L777 3234b00 058b205 OBl W EIA-710 5.23 Resistance to solder heat (D and M types only) This test is for solderable,

45、 non-removable contacts only on D-subminiature and micro-miniature connectors. The test shall be conducted in accordance with MIL-STD-202 Method 210 (or EIA- 364-56). D and M Type: Test 20% or seven contacts minimum. A solder iron rated for 25 watts shall be used. The solder iron shall be heated to

46、360 “C. It shall be applied to the termination for a period necessary to hold the solder in a liquid state for a time duration of 4 S to 5 s. Mer the test a visual inspection shall be performed at a magnification of 1OX. The contact shall meet the contact retention requirement and shall have no evid

47、ence of distortion or damage. 5.24 Solderability (D and M types) The test for solderability shall be conducted in accordance with MIL-STD-202 Method 208 (or EIA-364-52). This test shall be conducted on D-subminiature and microminiature connectors. 5.25 Impact (special cases C composite type only) Th

48、e test for impact damage shall be conducted on circular type composite connectors that are considered environment resisting, have straight strain relief clamps and have either threaded coupling or breech coupling. This test is not for bayonet coupled connectors. The test for impact shall be performe

49、d in accordance with ML-STD-1344 Method 2015 or EXA-364-42. The drop height shall be 1.2 m (4 fi). The number of drops shall be 8 total. The plate shall be indexed at 36“ intervals. The plugs shall have no caps or covers installed. Connector should fbnction adequately mechanically and electrically, within specified limits of project engineering documentation. 5.26 Shell-to-shell conductance (C type only) The test for shell-to-shell conductance on circular connectors that have conductive plating only shall be performed in accordance with MIL-STD-1344 Method 3007. The maximum voltage