IPC-SM-782A-表面贴装焊盘图形设计标准.pdf.pdf - 第225页
Standard Improvement Form IPC-SM-782A The purpose of this form is to provide the T echnical Committee of IPC with input from the industry regarding usage of the subject standard. Individuals or companies are invited to s…
• Zone 8
Zone 8 is the tolerance calculation for toe, heel and side
tolerance, and is kept to the side of the spreadsheet
because this is where the calculations are accomplished.
See Figure A-5.
• Zone 9
Zone 9 is where all the component dimension calculations
are derived. These are mostly calculated information,
although columns BR and BS provide calculated informa-
tion that is transferred to another zone. See Figure A-5.
• Zone 10
Zone 10 again provides information on the component
identification. See Figure A-6.
Figure A-5 Zones 8 and 9
Figure A-6 Zone 10
IPC-SM-782A December 1999
A-4
Standard Improvement Form IPC-SM-782A
The purpose of this form is to provide the
Technical Committee of IPC with input
from the industry regarding usage of
the subject standard.
Individuals or companies are invited to
submit comments to IPC. All comments
will be collected and dispersed to the
appropriate committee(s).
If you can provide input, please complete
this form and return to:
IPC
2215 Sanders Road
Northbrook, IL 60062-6135
Fax 847 509.9798
1. I recommend changes to the following:
Requirement, paragraph number
Test Method number , paragraph number
The referenced paragraph number has proven to be:
Unclear Too Rigid In Error
Other
2. Recommendations for correction:
3. Other suggestions for document improvement:
Submitted by:
Name Telephone
Company E-mail
Address
City/State/Zip Date
ASSOCIATION CONNECTING
ELECTRONICS INDUSTRIES
ANSI/IPC-T-50 Terms and Definitions for
Interconnecting and Packaging Electronic Circuits
Definition Submission/Approval Sheet
The purpose of this form is to keep
current with terms routinely used in
the industry and their definitions.
Individuals or companies are
invited to comment. Please
complete this form and return to:
IPC
2215 Sanders Road
Northbrook, IL 60062-6135
Fax: 847 509.9798
SUBMITTOR INFORMATION:
Name:
Company:
City:
State/Zip:
Telephone:
Date:
❑ This is a NEW term and definition being submitted.
❑ This is an ADDITION to an existing term and definition(s).
❑ This is a CHANGE to an existing definition.
Term Definition
If space not adequate, use reverse side or attach additional sheet(s).
Artwork: ❑ Not Applicable ❑ Required ❑ To be supplied
❑ Included: Electronic File Name:
Document(s) to which this term applies:
Committees affected by this term:
Office Use
IPC Office Committee 2-30
Date Received:
Comments Collated:
Returned for Action:
Revision Inclusion:
Date of Initial Review:
Comment Resolution:
Committee Action: ❑ Accepted ❑ Rejected
❑ Accept Modify
IEC Classification
Classification Code • Serial Number
Terms and Definition Committee Final Approval Authorization:
Committee 2-30 has approved the above term for release in the next revision.
Name:
Committee: Date:
IPC 2-30
ASSOCIATION CONNECTING
ELECTRONICS INDUSTRIES