1、 INCH-POUND MIL-STD-202G w/CHANGE 2 28 June 2013 SUPERSEDING MIL-STD-202G NOTICE 1 18 July 2003 DEPARTMENT OF DEFENSE TEST METHOD STANDARD ELECTRONIC AND ELECTRICAL COMPONENT PARTS AMSC N/A FSC 59GP Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL
2、-STD-202G w/CHANGE 2 ii FOREWORD 1. This military standard is approved for use by all Departments and Agencies of the Department of Defense. 2. Comments, suggestions, or questions on this document should be addressed to DLA Land and Maritime, ATTN: VAT, Post Office Box 3990, Columbus, OH 43218-3990
3、or emailed to capacitorfilterdla.mil. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at https:/assist.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL
4、-STD-202G w/CHANGE 2 iii SUMMARY OF CHANGE 2 MODIFICATIONS 1. Removed the distribution statement from the title page. 2. Updated contact information in the foreword. 3. Incorporated modifications from notice 1. 4. Changed the Uniform Resource Locator (URL) for the Acquisition Streamlining and Standa
5、rdization Information System (ASSIST) database throughout the standard. 5. Added “of this standard” to 2.1 for clarification. 6. Updated 2.2 and 2.3 in accordance with MIL-STD-962 (Standard Practice, Defense Standards Format and Content) and updated the referenced documents throughout the standard.
6、7. Changed 2.4 to include the words “unless otherwise noted herein or in the contract” in the first sentence. 8. Updated 6.5 to indicate that the margins of this standard are marked with vertical lines to indicate modifications generated by this change. 9. Added an allowance to use reagent grade hyd
7、rochloric acid to adjust the pH of the salt solution in paragraph 3 of method 101 (Salt Atmosphere (corrosion). 10. Corrected the metric conversion for .625 inch in method 111, page 3, figure 111-1. 11. Corrected the metric conversion for .94 inch in method 203, page 5, figure 203-3. 12. Added “Dime
8、nsions are given in inches” and “and are given for general information only” to note 1 of method 203, page 6, figure 203-4. 13. Added “Dimensions are given in inches” to note 1 and “and are given for general information only” to note 2 of method 206, page 2, figure 206-1. 14. Corrected the metric co
9、nversion for 26.50 inches in method 207, page 15, figure 207-6. 15. Added “Dimensions are given in inches” to note 1 and “and are given for general information only” to note 2 of method 211, page 6, figure 211-4. 16. Updated “Air Force-11” to “Air Force-85” in the concluding material. 17. Added an a
10、dvisory note underneath the concluding material cautioning that the information in the concluding material may have changed since the date of this document. 18. Deleted DD Form 1426 from the end of this standard. Provided by IHSNot for ResaleNo reproduction or networking permitted without license fr
11、om IHS-,-,-MIL-STD-202G w/CHANGE 2 iv CONTENTS PARAGRAPH Page 1. SCOPE . 1 1.1 Purpose 1 1.2 Test method numbering system 1 1.3 Method of reference 1 2. APPLICABLE DOCUMENTS 2 2.1 General 2 2.2 Government documents . 2 2.3 Non-Government publications 3 2.4 Order of precedence 3 3. DEFINITIONS . 3 4.
12、 GENERAL REQUIREMENTS . 4 4.1 Test requirements 4 4.2 Test conditions . 4 4.3 Reference conditions . 4 4.4 Calibration requirements 4 5. DETAILED REQUIREMENTS 4 6. NOTES . 4 6.1 Intended use 4 6.2 Sequence of tests 5 6.3 Chemical listing 5 6.4 Subject term (key word) listing . 6 6.5 Change notations
13、 . 6 NUMERICAL INDEX OF TEST METHODS 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-202G w/CHANGE 2 1 1. SCOPE 1.1 Purpose. This standard establishes uniform methods for testing electronic and electrical component parts, including basic en
14、vironmental tests to determine resistance to deleterious effects of natural elements and conditions surrounding military operations, and physical and electrical tests. For the purpose of this standard, the term “component parts“ includes such items as capacitors, resistors, switches, relays, transfo
15、rmers, inductors, and others. This standard is intended to apply only to small component parts, weighing up to 300 pounds or having a root mean square test voltage up to 50,000 volts unless otherwise specifically invoked. The test methods described herein have been prepared to serve several purposes
16、: a. To specify suitable conditions obtainable in the laboratory that give test results equivalent to the actual service conditions existing in the field, and to obtain reproducibility of the results of tests. The tests described herein are not to be interpreted as an exact and conclusive representa
17、tion of actual service operation in any one geographic location, since the only true test for operation in a specific location is an actual service test at that point. b. To describe in one standard (1) all of the test methods of a similar character which appeared in the various joint or single-serv
18、ice electronic and electrical component parts specifications, (2) those test methods which are feasible for use in several specifications, and (3), the recognized extreme environments, particularly temperatures, barometric pressures, etc., at which component parts will be tested under some of the pr
19、esently standardized testing procedures. By so consolidating, these methods may be kept uniform and thus result in conservation of equipment, man-hours, and testing facilities. In achieving these objectives, it is necessary to make each of the general tests adaptable to a broad range of electronic a
20、nd electrical component parts. c. The test methods described herein for environmental, physical, and electrical tests shall also apply, when applicable, to parts not covered by an approved military specification, military sheet form standard, specification sheet, or drawing. 1.2 Test method numberin
21、g system. The test methods are designated by numbers assigned in accordance with the following system: 1.2.1 Class of tests. The tests are divided into three classes: Test methods numbered 101 to 199 inclusive, cover environmental tests; those numbered 201 to 299 inclusive, cover physical characteri
22、stics tests; and those numbered 301 to 399 inclusive, cover electrical characteristics tests. Within each class, test methods are serially numbered in the order in which they are introduced into this standard. 1.2.2 Revision of test methods. Revisions of test methods are indicated by a letter follow
23、ing the method number. For example, the original number assigned to the moisture resistance test method is 106; the first revision of that method is 106A, the second revision, 106B, etc. 1.3 Method of reference. When applicable, test methods contained herein shall be referenced in the individual spe
24、cification by specifying this standard, the method number, and the details required in the summary paragraph of the referenced method. To avoid the necessity for changing specifications which refer to this standard, the revision letter following the method number shall not be used when referencing t
25、est methods. For example, use “Method 106”, not “Method 106A”. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-202G w/CHANGE 2 2 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3, 4, 5, and
26、individual test methods of this standard. This section does not include documents cited in other sections of this standard 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 m
27、eet all specified requirements documents cited in sections 3, 4, 5, and the individual test methods of this standard, 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 d
28、ocument to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. FEDERAL SPECIFICATIONS QQ-B-654 - Brazing Alloys, Silver QQ-S-698 - Steel, Sheet and Strip, Low Carbon TT-I-735 - Isopropyl Alcohol DEPARTMENT OF DEFENSE
29、 SPECIFICATIONS MIL-PRF-680 - Degreasing Solvent MIL-S-901 - Shock Tests, H.I. (High Impact), Shipboard Machinery, Equipment, and Systems, Requirements For MIL-DTL-1222 - Studs, Bolts, Screws and Nuts for Applications Where a High Degree Of Reliability Is Required; General Specification For MIL-I-24
30、768/14 - Insulation, Plastic, Laminated, Thermosetting, Cotton-Fabric-Base, Phenolic-Resin (FBG) (Copies of these documents are available online at http:/quicksearch.dla.mil or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.2.2 Other go
31、vernment 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 are those cited in the solicitation. CODE OF FEDERAL REGULATIONS (CFR) 10 CFR 20 -
32、Standards For Protection Against Radiation 10 CFR 30 - Rules of General Applicability to Domestic Licensing of Byproduct Material 10 CFR 31 - General Domestic Licenses For Byproduct Material 10 CFR 32 - Specific Domestic Licenses to Manufacture or Transfer Certain Items Containing Byproduct Material
33、 (Copies of these documents are available online at www.nrc.gov or from the Public Document Room, Nuclear Regulatory Commission, PDR, O1F13, Washington DC 20555.) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-STD-202G w/CHANGE 2 3 2.3 Non-Gover
34、nment 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. ACOUSTICAL SOCIETY OF AMERICA (ASA) ASA S2.2 - Methods for the Calibration of Shock and
35、Vibration Pickups (Copies of this document are available online at http:/asa.aip.org or from ASA - Acoustical Society of America, 2 Huntington Quadrangle, Suite 1NO1, Melville, NY 11747.) ASSOCIATION CONNECTING ELECTRONIC INDUSTRIES (IPC) IPC 4101 - Specification For Base Materials For Rigid and Mul
36、tilayer Printed Boards J-STD-002 - Solderability Tests For Component Leads, Terminations, Lugs, Terminals and Wires J-STD-004 - Requirements For Soldering Fluxes J-STD-005 - Requirements For Soldering Pastes J-STD-006 - Requirements For Electronic Grade Solder Alloys and Fluxed and Non-Fluxed Solid
37、Solders For Electronic Soldering Applications (Copies of these documents are available online at www.IPC.org or from IPC, 3000 Lakeside Drive, Suite 309 S, Bannockburn, IL 60015.) ASTM INTERNATIONAL (ASTM) ASTM A519 - Standard Specification For Seamless Carbon and Alloy Steel Mechanical Tubing (Copi
38、es of this document are available online at www.astm.org or from ASTM, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.) NATIONAL CONFERENCE OF STANDARDS LABORATORIES (NCSL) NCSL Z540.3 - Requirements for the Calibration of Measuring and Test Equipment (Copies of this document are available
39、online at www.ncsli.org or from NCSL International, 1800 30thStreet, Suite 305, Boulder, CO 80701-1026.) 2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this document and the references cited herein, the text of this document
40、takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. DEFINITIONS This section is not applicable to this standard. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS
41、-,-,-MIL-STD-202G w/CHANGE 2 4 4. GENERAL REQUIREMENTS 4.1 Test requirements. The requirements which must be met by the component parts subjected to the test methods described herein are specified in the individual specifications. Whenever this standard conflicts with the individual specification, t
42、he latter shall govern. 4.2 Test conditions. Unless otherwise specified herein, or in the individual specification, all measurements and tests shall be made at temperatures of 15C to 35C (59F to 95F) and at ambient air pressure and relative humidity. Whenever these conditions must be closely control
43、led in order to obtain reproducible results, for referee purposes, a temperature of 25C, +0C, -2C (77F, +0F, -3.6F), relative humidity of 50 2 percent, and atmospheric pressure of 650 to 800 millimeters of mercury shall be specified. 4.2.1 Permissible temperature variation in environmental chambers.
44、 When chambers are used, specimens under test shall be located only within the working area defined as follows: a. Temperature variation within working area: The controls for the chamber shall be capable of maintaining the temperature of any single reference point within the working area within 2C (
45、3.6F). b. Space variation within working area: Chambers shall be so constructed that, at any given time, the temperature of any point within the working area shall not deviate more than 3C (5.4F) from the reference point except for the immediate vicinity of specimens generating heat. 4.3 Reference c
46、onditions. Reference conditions as a base for calculations shall be 25C (77F) for temperature, or an alternate temperature of 20C (68F), 760 millimeters of mercury for air pressure, and a relative humidity of 50 percent. 4.4 Calibration requirements. Calibration shall be applied to those items of me
47、asuring and test equipment used to assure product compliance with specifications and contractual requirements. Calibration shall be performed in accordance with the requirements of NCSL Z540.3 or equivalent. Calibrated items shall be controlled, used, and stored in a manner suitable to protect calib
48、ration integrity. Test equipment requiring calibration shall be identified and labeled in accordance with NCSL Z540.3 or equivalent. 5. DETAILED REQUIREMENTS This section is not applicable to this standard. 6. NOTES (This section contains information of a general or explanatory nature which may be h
49、elpful, but is not mandatory). 6.1 Intended use. This test method standard specifies uniform procedures for the environmental, physical, and electrical testing of electronic and electrical component piece parts. It is intended as a reference document for test requirements called out in military component specifications and when specified, in oth
