1、 CEA Standard Component Marking Standard CEA-706-A November 2004 Copyright Consumer Electronics Association Reproduced by IHS under license with CEA Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-NOTICE CEA Standards, Bulletins and other technical publications are
2、 designed to serve the public interest 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. Existe
3、nce of such Standards, Bulletins and other technical publications shall not in any respect preclude any member or nonmember of CEA from manufacturing or selling products not conforming to such Standards, Bulletins or other technical publications, nor shall the existence of such Standards, Bulletins
4、and other technical publications preclude their voluntary use by those other than CEA members, whether the standard is to be used either domestically or internationally. Standards, Bulletins and other technical publications are adopted by CEA in accordance with the American National Standards Instit
5、ute (ANSI) patent policy. By such action, CEA does not assume any liability to any patent owner, nor does it assume any obligation whatever to parties adopting the Standard, Bulletin or other technical publication. This CEA Standard is considered to have International Standardization implication, bu
6、t the International Electrotechnical Commission activity has not progressed to the point where a valid comparison between the CEA Standard and the IEC document can be made. This Standard does not purport to address all safety problems associated with its use or all applicable regulatory requirements
7、. 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 Project Number 2038, formulated under the cognizance of the CEAs R9 Data Capture Committee.) Published by CO
8、NSUMER ELECTRONICS ASSOCIATION 2002 Technology 7164181 is the company prefix in this example D-U-N-S Number 12V 12V436929531 The D-U-N-S number is 436929531 CAGE Code 17V 17V12592 The CAGE code is 12592 Customers Supplier ID V V23NPNSA2 23NPNSA2 is the supplier ID assigned by the customer; no EID re
9、gistration authority is implied. 5.2.2 Item Identification The maximum length of the Item Identification shall be 25 data characters. Item identification codes may be concatenated with the manufacturer identification to produce a unique item identification. The 14-digit EAN/UCC-14 is a fixed length
10、numeric example of such unique identification. 5.2.2.1 Item Identification Data Identifier The Data Identifier “1P” shall precede Manufacturer Item Identification data. The Data Identifier “P” shall precede Customer Item Identification data. When using EAN.UCC item identification and data identifier
11、, the data identifier 3P shall precede the EAN.UCC-13 or EAN.UCC-12 combined manufacturer and item identifier. The EAN.UCC-12 shall be prefixed with one zero for a total data length of 13 to be consistent with EAN.UCC coexistence recommendations. Copyright Consumer Electronics Association Reproduced
12、 by IHS under license with CEA Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-4Note that the EAN.UCC identification scheme does not allow the user to parse an EAN.UCC number to determine the manufacturer. As a consequence the manufacturer ID must also be marked pe
13、r 5.2.1 in addition to the EAN.UCC number. 5.2.3 Traceability Information Traceability information is assigned by the manufacturer or supplier. Traceability information may incorporate the following data fields: lot or batch number, manufacturing location, date of manufacture, serial number, revisio
14、n level, country of origin, etc. These fields may be encoded as a single Traceability data element. The data element consists of the appropriate Data Identifier and its associated data. The maximum length of Traceability information shall be 18 characters, which excludes the associated Data Identifi
15、er. If more Traceability data is required, then it may be included in additional data fields (see 5.2.4). 5.2.3.1 Traceability Code Data Identifier The appropriate Data Identifier shall precede the Traceability data. See Annex A for a listing of commonly used Data Identifiers. 5.2.4 Additional Data
16、Fields Additional data fields consistent with ANSI MH10.8.3 may be included in the symbol as long as the symbol size does not exceed 7 mm by 7 mm. See Annex A for commonly used Data Identifiers and Annex C for Data Matrix symbol sizes. Separate symbols may be added, at the discretion of the manufact
17、urer, when additional data is required. Placement of any additional symbol shall not interfere with the requirements of 6.2.6 Symbol and Text Orientation for primary symbol placement. 5.2.5 Data Field Syntax The message shall be encoded using the ANSI MH10.8.3 format. The message Header, the first 7
18、 characters “)RS06GS”, and the Trailer, the last 2 characters “RSEOT”, are fixed for this application, in accordance with the ANSI MH10.8.3 standard, when Data Identifiers are used within the message. When combining data fields within a two dimensional symbol, the “GS“ (ASCII/ISO 646 Decimal “29“, H
19、ex “1D”) character shall be used with the appropriate Data Identifier to identify each of the combined fields. 5.2.5.1 Example of Maximum Length Message A symbol comprising the mandatory fields, each at their maximum length contains: 53 user data characters, o 10-Character Manufacturer Identifier (m
20、aximum length of EAN.UCC Company Number), 25-Character Item Identification, and 18-Character Traceability Code 6 identifier characters, 2 separator characters, and 9 Message Header and Trailer characters for a total of 70 characters. When using optimal Data Matrix compaction features, a symbol conta
21、ining the three mandatory fields, each of maximum length, will fit in a 3 mm by 3 mm area when using 0.102 mm (0.004 inch) cells. See Table 1. For details of optimal compaction see ISO/IEC 16022. This example is comprised of Data Identifiers, other overhead characters, and maximum length mandatory f
22、ields (the 7-digit Manufacturer Identification, a 25 character maximum length Item Identification, and an 18 character maximum length Traceability Identification.) Copyright Consumer Electronics Association Reproduced by IHS under license with CEA Not for ResaleNo reproduction or networking permitte
23、d without license from IHS-,-,-53V0098756 1P1A3B5C7D9E1F2G4H6I8J0K2L4 1T1A3B5C7D9E1F2G4H6IElement SeparatorManufacturer Item IdentificationTraceability InformationGSLeading ZeroGS)ETORSRS06Message HeaderMessage TrailerUCC Manufacturer ID (Company Prefix)GSAn optimized symbol should look like thisAn
24、optimized symbol will not look like this26 cells by 26 cells 32 cells by 32 cellsGRAPHICS ABOVE NOT ACTUAL SIZE Copyright Consumer Electronics Association Reproduced by IHS under license with CEA Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-65.2.5.2 Example of R
25、educed Length Message The total message length, using the ANSI MH10.8.3 format, can be reduced by using a Universal Product Code (U.P.C.) product code as the Item ID and a Serial Number as the Traceability identification. The total message length using this format could contain as many 44 characters
26、, assuming that a maximum length (18 character) Traceability Identification is used. 3P0098756100013 S1A3B5C7D9E1F2G4H6I)ETORSRS06Message HeaderMessage TrailerElement SeparatorSerial NumberU.P.C. Product CodeGSGSAn optimized symbol should look like this22 cells by 22 cellsGRAPHIC ABOVE NOT ACTUAL SI
27、ZE Where the space available to mark a component is restricted, the number of characters that can be encoded in the item identification or traceability information will be reduced. 6. Symbology Requirements The symbology specified by this standard is Data Matrix ECC200, as defined by the ISO/IEC 160
28、22. 6.1 Level of Error Correction The error correction level shall be ECC200. 6.2 Physical Characteristics of the Symbol This section defines the marking requirements for the symbol. 6.2.1 Symbol Size The maximum symbol size shall be 7 mm by 7 mm. The reason for this requirement is to establish a kn
29、own field of view for reading the mark. No minimum symbol size is specified. However, a minimum cell size is specified in 6.2.2. It is recommended that the user implement their system using the largest cell size that will fit in the available area, up to the maximum dimensions shown in this table. T
30、his will allow for the best possible scanner performance. Cell sizes below 0.150 mm (0.006 inch) are not recommended because these symbols cause a reduced depth of field. Cell sizes below 0.150 mm (0.006 inch) may only be appropriate for use when the marking area on a component will not permit the u
31、se of 0.150 mm (0.006 inch) or greater cell sizes. The particular symbol size that is realized will depend on the amount and type of data encoded. Table 1 - Symbol Size versus Cell Size Based on Mandatory Fields at Maximum Length (size includes quiet zones) Cell Size0.102 mm (0.004 inch) 0.150 mm (0
32、.006 inch) 0.175 mm (0.007 inch) 0.200 mm (0.008 inch) 0.250 mm (0.010 inch) Symbol Size 2.9 x 2.9 mm 4.2 x 4.2 mm 4.9 x 4.9 mm 5.6 x 5.6 mm 7.0 x 7.0 mm Copyright Consumer Electronics Association Reproduced by IHS under license with CEA Not for ResaleNo reproduction or networking permitted without
33、license from IHS-,-,-76.2.2 Feature Size Cell Width and Height The feature size is determined by many factors including marking area available, surface type, environment and reading device(s) used. The minimum open system width of the cell shall be 0.102 mm (0.004 inch). The minimum open system heig
34、ht of the cell shall be 0.102 mm (0.004 inch) in a non clean room environment. The minimum symbol size to encode the maximum 50 user data character message shall be 2.9 mm by 2.9 mm, including quiet zones, based on a cell size of 0.102 mm (0.004 inch) and an error correction level of ECC200. 6.2.3 Q
35、uiet Zones The quiet zones are specified as a minimum of one (1) cell width on all four sides of the mark area. The quiet zone may be the space contiguous to the edge(s) of the mark where the imaged area abuts the physical edge or edges of the item being imaged. It is not the intent of this standard
36、 to require additional quiet zone beyond the minimum required by the symbology specification. 6.2.4 Surface Topography In order to achieve an acceptable print quality with a cell width/height of 0.102 mm (0.004 inch), it may be necessary to specify a particular component surface finish and/or geomet
37、ry of lighting conditions. Molded component surface finish should be Charmille VDI 3400 Scale of 18-24 or EDM finish of .8-1.6 micrometers on RA scale. 6.2.5 Substrate Properties Substrates may be various colors and marks on these substrates may be light or dark. The ISO/IEC 16022 Standard will prov
38、ide guidance for marking substrates that are dark or light. 6.2.6 Symbol and Text Orientation 6.2.6.1 Symbol Orientation And Placement The symbol shall be oriented such that the intersection of the two solid lines of the symbols finder pattern points to the lower left of the component. The bottom so
39、lid line of the symbol should be parallel to the lines of text. The symbol should be visible on the finished assembly. When this surface is covered, e.g., with a heat sink, the symbol should be placed on the pin side. The symbol should be placed at the center of the left side of the component as det
40、ermined by the orientation of the human-readable text for reading. The human-readable text should be placed to the right of the symbol. See Figures 1 through 5, for examples of symbol placement. When component orientation is not critical or related to component functionality, the symbol shall be loc
41、ated and oriented as mutually agreed to between trading partners. Copyright Consumer Electronics Association Reproduced by IHS under license with CEA Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-8Figure 2 - Quad Flat Pack (QFP) Marking ExampleFigure 1 - Dual In-
42、line Package Marking ExampleABC12345673P0098756100013 400 MZ S1A3B5C7D9E1F2G4H6I3P0098756 100013 S1A3B5C7D 9E1F2G4H6I0098756100013 3P0098756 100013 S1A3B5C7D 9E1F2G4H6I3V0098756 1P1A3B5C7D9E1F2G4H6I8J0KL24 1T1A3B5C7D9E1F2G4H6I3V0098756 1P1A3B5C7 1T1A3B5C7Copyright Consumer Electronics Association Re
43、produced by IHS under license with CEA Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-9This is where one might place Text9293Axxx02-120 SZ923 / ICU 1BRN0T2B1-1XYZPRODTZM +MJH 1107801.5 V Type AB26.2.6.2 Text This standard does not address the marking of human-read
44、able interpretation of symbol data or text. This standard does not supersede or replace any applicable safety or regulatory marking or labeling requirements. This standard is to be applied in addition to any other mandated labeling requirements. 6.3 Print Quality 6.3.1 Test Set-Up Measurement Method
45、ology The printed or marked symbol to be measured shall be illuminated by a white light source such as a Stocker and Yale 9-Series Circular Illuminator (70 mm (2.9 inch) diameter fluorescent ring light) or equivalent. The light source shall be mounted at a height to provide a 35 to 45 degree angle o
46、f incidence, relative to the symbol surface. The distance from the bottom of the fluorescent bulb to the marked surface should be approximately 24 mm (40 degree angle of incidence). Consistent measurements have been achieved using an NEC Model TI324A CCD camera having a shutter speed of 1/2000th of
47、a second, a 20 mm lens extension tube, and a 50 mm lens set at an f-stop of f.8. The image shall be in focus. The distance from the bottom of the lens to the top of the component (image plane) is recommended to be approximately 160 mm (6.25 inches). Print Quality Equipment Set-UpCamera20mm Extension
48、 Tube50mm LensRing Light35 to 456.3.2 Test Set-Up Calibration of Measurement Systems Calculate the reference reflectivity per ISO/IEC 15416, where a working standard symbol shall be obtained by 1) buying a pre-measured symbol or 2) measuring a diffuse white and carbon black symbol with a MacBeth ref
49、lectometer at 680 nm. Determine the Symbol Contrast (SC) of the working standard symbol. The working standard symbol shall be an “A“ quality symbol according to ISO/IEC 15415. Verify that the measured gray level of the working standard symbol sample is between 150 and 200, out of 256. Ambient light levels shall be controlled in order not to have any influence on the measurement results. Copyright Consumer Electroni
