1、- STD-EIA 476-B-ENGL 1998 3234b00 Ob04083 589 = EIA STANDARD Date Code Marking EIA-476-B (Partial Revision of EIA476-A) JLV 1998 ELECTRONIC INDUSTRIES ALLIANCE ENGINEERING DEPARTMENT Electronic Industries Alliance NOTICE ELA Engineering Standards and Publications are designed to serve the public int
2、erest through eliminating 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 Publica
3、tions shall not in any respect preclude any member or nonmember of ETA from manufacturing or selling products not conforming to such Standards and Publications, nor shaii the existence of such Standards and Publications preclude their voluntary use by those other than ETA members, whether the standa
4、rd is to be used either domestidy or internationally. Standards and Publications are adopted by EIA in accordance with the American National Standards Institute (ANSI) patent policy. By such action, ETA does not assume any liability to any patent owner, nor does it assume any obligation whatever to
5、parties adopting-the Standard or Publication. This ELA Standard is considered to have International Standardization implication, but the International E3ectrotechnia.l Commission activity has not progressed to the point where a valid comparison between the EIA Standard and the IEC document can be ma
6、de. This Standard does 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
7、 before its use. (From Project Number 3996, foxmuiated under the cognizance of the EM Data Modeling Committee.) hblished by ELECTRONIC INDUSTRIES ALLIANCE 1998 Engineering Department 2500 Wilson Boulevard Arlington, VA 22201 PRICE: Please refer to the current Catalog of EU, JEDEC, and TIA STANDARDS
8、and ENGINEERING PUBLICATIONS or call Global Engineering Documents, USA and Canada (1-800-8547179) International (303-397-7956) All rights reserved Printed in U.S.A. STDoEIA 41ib-B-ENGL 1998 = 3234b00 Ob04085 351 = EIA-476-B Page I DATE CODE MARKING (From EIA Standards Proposal No. 3996 formulated un
9、der the cognizance of the Data Modeling Committee.) INTRODUCTION This standard was formulated for the purpose of describing an easily understood coding system, which has been sponsored and operated by the Electronic Industries Association (EIA) since 1945 for the identification of the manufacturing
10、source and the date of manufacture of an electronic component or equipment. Currently many manufacturers are participating in the program. A user may determine who. manufactured the component or equipment or when it was manufactured through reference to the EIA source and date code listing, or by di
11、rect contact with EIA. The source code was originally part of this standard. The requirements for the source code are now covered in EIA-476A. 1 SCOPE This standard describes a system for identification of the date of manufacture of an electronic component or equipment through the manufacturers mark
12、ing the product with a series of numbers known as the EIA date code. EIA additionally provides a scheme for standardization of the calendar year and week in a date code. If the date code is desired by the customer it must specified in the contractual agreements (purchase order or ordering specificat
13、ion). 2 REQUIREMENTS 2.1 Date Code The date code shall be a four-digit number consisting of the last two digits of the year followed by an additional two digits corresponding to the week of the year, in accordance with MIL-STD-1285 Date Code. (Example: Date Code 8632 denotes component parts or equip
14、ment manufactured during the 32nd week of 1986.) 2.2 Marking The combined source and date code shall be marked on a component or equipment in a uniform manner with the source code number preceding the date code, separated by a dash; for example: 1 13-961 O. This example identifies the manufacturer a
15、s the organization having been assigned source code 113 and the component as having been manufactured in the 10th week of the calendar year 1996. E IA-476-B Page 2 A manufacturer should use his internal company method of identification of production in selection of an appropriate date code that iden
16、tifies a production run that may span more than one week. For example, the manufacturer may utilize the week in which production has begun or the week that has ended, as long as his selection process will allow lot identification when future inquiries are made utilizing the assigned date code. If a
17、manufacturer is unable to use the full four digits of the date code because of space and legibility limitations it may abbreviate the four digits to three digits through using only the last digit of the year. Use of the date code, in the format specified in this standard, in combination with the sou
18、rce code is optional. The date code may be used by itself without the source code. The source code may be used by itself without the date code. Date may beshown at a separate location in alternative ways. Source and/or date code marking on the electronic component equipment must be legible following environmental testing and/or special tests applicable to marking as specified in the detail specification. 3 QUALITY ASSURANCE Source and date code marking quality may be specified in the detail specification or other ordering requirements.
