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SEMI D26-1000 © SEM I 2000 11 Figure 8 Data Matrix Cell Dimensions Figure 9 Border Rows and Columns

SEMI D26-1000 © SEMI 2000 10

9.5 Content of the Data Matrix Co de Symbol

9.5.1 Each rectangular matrix code symbol shall

contain between 46 message characters (for 16 rows ×

36 columns) and 72 message characters (for 16 rows ×

48 columns), encoded in accordance with AIM

International Symbology Specification – Data Matrix.

9.5.2 The message characters may include any of

those designated as “mostly upper case” Annex K of

AIM International Symbology Specification – Data

Matrix. 8-bit characters may also be encoded with

reduced field capacity. The first 20 characters shall

contain two elements:

a. a vendor-assigned 15-character mask identification

code, followed

b. a 1-character field concatenation symbol (+) and 2-

character field ID (per ANSI MH 10.8)

9.5.3 The next 26 message characters shall contain

two elements:

a. a customer-assigned 13-character part #, followed

b. a 1-character field concatenation symbol (+)

followed by a 2-character field ID and

c. a 12-character customer-assigned part revision

number.

9.5.4 The remaining message characters, if any, shall

contain information as agreed between the vendor and

the user. This may require field identifiers and field

concatenation.

9.5.4.1 Field identifiers listed in ANSI MH 10.8.2

include:

a. Customer part number revision: 2P

b. Customer specification number: 20P

c. Customer specification revision: 21P

d. Customer drawing number: 12P

e. Customer drawing number revision: 22P

9.5.5 Location of the Data Matrix Code Symbol

9.5.5.1 With the substrate positioned front surface up

and with the orientation corner toward the operator and

to the operator’s left, the reference point of the data

matrix code symbol shall be placed toward the

orientation corner and

8 ± 1 mm from the substrate’s y-edge; this provides

clearance for corner cuts or other elements adjacent

to the corner, and

3 ± 1 mm from the substrate’s x-edge; this

approximately centers the field between the x-edge

and the FQA boundary.

Figure 7

Data Matrix Field

Figure 8

Data Matrix Cell Dimensions

Figure 9

Border Rows and Columns

Figure 10

Data Matrix Code Field in Edge Exclusion Area

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