• IPC 2615 : 0

    Current The latest, up-to-date edition.

    PRINTED BOARD DIMENSIONS AND TOLERANCES

    Available format(s):  Hardcopy

    Language(s):  English

    Published date: 

    Publisher:  Institute of Printed Circuits

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    Table of Contents - (Show below) - (Hide below)

    1 PURPOSE
          1.1 Scope
          1.2 General
          1.3 References
    2 TERMS AND DEFINITIONS
          2.1 Actual Size
          2.2 Basic Dimension
          2.3 Bilateral Tolerance
          2.4 Cumulative Tolerances
          2.5 Datum
          2.6 Datum Feature
          2.7 Datum Axis
          2.8 Datum Target
          2.9 Dependent of Size
          2.10 Dimension
          2.11 End Product (End Item)
          2.12 Fabrication Allowance
          2.13 Feature
          2.14 Feature of Size
          2.15 Fiducial
          2.16 Geometric Tolerance
          2.17 Limits of Size
          2.18 Least Material Condition (LMC)
          2.19 Maximum Material Condition (MMC)
          2.20 Positional Tolerance
          2.21 Reference Dimension
          2.22 Regardless of Feature Size (RFS)
          2.23 Simulated Datum
          2.24 Tolerance
          2.25 Tolerance, Statistical
          2.26 Toleranced Dimension
          2.27 True Position
          2.28 Undimensioned Drawing
          2.29 Unilateral Tolerance
          2.30 Virtual Condition
    3 GEOMETRIC CHARACTERS AND SYMBOLS
          3.1 General
          3.2 Use of Notes to Supplement Symbols
          3.3 Symbol Construction
          3.4 Geometric Tolerance Symbols
          3.5 Feature Control Frame Placement
    4 GENERAL RULES
          4.1 Maximum Material Condition Principle (MMC)
    Effect of MMC
          4.2 Regardless of Feature Size
          4.3 Least Material Condition Principle
          4.4 Limits of Size
          4.5 Applicability of MMC, RFS, and LMC
    5 DATUM REFERENCING
          5.1 General
          5.2 Datum Features
          5.3 Establishing Datums
          5.4 Datum Targets
    6 TOLERANCES OF LOCATION
          6.1 General
          6.2 Positional Tolerancing
          6.3 Fundamental Explanation of Positional
                 Tolerancing
          6.4 Feature Pattern Location
          6.5 Bi-directional Positional Tolerancing of
                 Features
          6.6 Position of Non-Circular Features
          6.7 Undimensioned Drawings (Artwork)
    7 TOLERANCES OF FORM, ORIENTATION, PROFILE
          7.1 General
          7.2 Form and Orientation Control
          7.3 Specifying Form and Orientation Tolerances
          7.4 Profile Control
    Appendix A: FUNDAMENTAL DIMENSIONING AND TOLERANCING RULES
    Appendix B: GENERAL TOLERANCING AND RELATED PRINCIPLES
    Appendix C: DIMENSIONING FOR COMPUTER-AIDED DESIGN AND
                 MANUFACTURING
    Figure 3-1 - Datum Feature Symbol
    Figure 3-2 - Examples of Datum Identification
    Figure 3-3 - Basic Dimension Symbol
    Figure 3-4 - Feature Control Frame
    Figure 3-5 - Feature Control Frame Incorporated Datum Report
    Figure 3-6 - Order of Precedence of Datum Reference
    Figure 3-7 - Multiple Feature Control Frames
    Figure 3-8 - Symbol for All Around
    Figure 3-9 - Combined Feature Control Frame and Datum Feature
                 Symbol
    Figure 3-10 - Feature Control Frame Placement
    Figure 4-1 - Positional Tolerancing at MMC
    Figure 4-2 - Variations of Form Allowed By Size Tolerance
    Figure 5-1 - Datum Reference Frame
    Figure 5-2 - Datum Reference Frame to Printed Board
                 Relationships
    Figure 5-3 - Datum Reference Using Printed Board Edges
    Figure 5-4 - Hole and Slot Establishing Secondary and
                 Tertiary Datums
    Figure 5-5 - Additional Datum Example
    Figure 5-6 - Datum Feature Identification and Reference
    Figure 5-7 - Secondary Datum Established By Internal Feature
    Figure 5-8 - Datum Feature and Simulated Datum
    Figure 5-9 - Virtual Condition of Datum Feature
    Figure 5-10 - Part With Cylindrical Datum Features (a)
                  primary datum feature K, which establishes a
                  datum plane; and (b) secondary datum feature
                  M, which establishes a datum axis
    Figure 5-11 - Cylindrical Internal Datum Features
    Figure 5-12 - Development of a Datum Reference Frame
    Figure 5-13 - Pattern of Feature to Establish Secondary Datum
    Figure 5-14 - Multiple Datum Reference Conditions
                  (Rigid/Flex) Examples
    Figure 5-15 - Referencing Datums in Feature Control Frames
    Figure 5-16 - Datum Target Symbol
    Figure 5-17 - Datum Target Point
    Figure 5-18 - Dimensioning Datum Targets
    Figure 5-19 - Primary Datum Plane Established
    Figure 6-1 - Identifying Basic Dimensions
    Figure 6-2 - Positional Tolerances With Datum Reference
    Figure 6-3 - Positional Tolerancing
    Figure 6-4 - Establishing Datums for True Position Location
    Figure 6-5 - Basic Dimensioning Using Chain or Baseline Format
    Figure 6-6 - Boundary for Surface of Hole at MMC
    Figure 6-7 - Hole Axes in Relation to Positional Tolerance
                 Zones
    Figure 6-8 - Increase in Positional Tolerance Where Hole is
                 Not at MMC
    Figure 6-9 - Conventional Positional Tolerancing at MMC
    Figure 6-10 - Regardless of Feature Size Applied to A Feature
                  and A Datum
    Figure 6-11 - Increase in Positional Tolerance Where Hole is
                  not at LMC
    Figure 6-12 - LMC Applied to A Pattern of Mounting Pins
    Figure 6-13 - Multiple Patterns of Features
    Figure 6-14 - Tolerance Zones for Patterns Shown in
    Figure 6-13
    Figure 6-15 - Multiple Patterns of Features, Separate
                  Requirement
    Figure 6-16 - Hole Patterns Located By Composite Positional
                  Tolerancing
    Figure 6-17 - Tolerance Zone for Three-Hole Hole Patterns
                  Shown in Figure 6-16
    Figure 6-18 - Bi-Directional Positional Tolerancing,
                  Rectangular Coordinate Method
    Figure 6-19 - Keying Slot Detail
    Figure 6-20 - 'V' Groove
    Figure 6-21 - Keying Slot Detail
    Figure 7-1 - Application of A Profile of A Surface to A
                 Contour
    Figure 7-2 - Specifying Profile of A Surface All Around
    Figure 7-3 - Specifying Different Profile Tolerance
    Figure 7-4 - Profile Implementation
    Figure 7-5 - Specifying A Controlled Radius
    Figure 7-6 - Tolerancing An Angular Surface Using A
                 Combination of Linear and Angular Dimensions
    Figure 7-7 - Interpreting Angularity Tolerances
    Figure 7-8 - 45 Degree Chamfer
    Figure A-1 - Angular Units
    Figure A-2 - Millimeter Dimensioning
    Figure A-3 - Decimal Inch Dimensioning
    Figure A-4 - Application of Dimensions
    Figure A-5 - Grouping of Dimensions
    Figure A-6 - Spacing of Dimensions
    Figure A-7 - Staggered Dimensions
    Figure A-8 - Dimension Line/Extension Line
    Figure A-9 - Oblique Extension Lines
    Figure A-10 - Breaks In Extension Lines
    Figure A-11 - Point Location
    Figure A-12 - Limited Length or Area Indication
    Figure A-13 - Leader-Directed Dimension
    Figure A-14 - Minimizing Leaders
    Figure A-15 - Leader Directed to Circle
    Figure A-16 - Reading Direction
    Figure A-17 - Intermediate Reference Dimension
    Figure A-18 - Radii
    Figure A-19 - Radius With Locating Center
    Figure A-20 - Radii With Unlocated Center
    Figure A-21 - Dimensioning Chords, Arcs, and Angles
    Figure A-22 - Fully Rounded Ends
    Figure A-23 - Partially Rounded Ends
    Figure A-24 - Rounded Corners
    Figure A-25 - Circular Arc Outline
    Figure A-26 - Coordinate or Offset Outline
    Figure A-27 - Tabulated Outline
    Figure A-28 - Round Holes
    Figure A-29 - Slotted Holes
    Figure A-30 - Equalized Chamfers
    Figure A-31 - Chamfers at Other Than 90 degrees
    Figure A-32 - Edge Card Connector
    Figure A-33 - Rectangular Coordinate Dimension
    Figure A-34 - Rectangular Coordinate Dimensions Without
                  Dimension Lines
    Figure A-35 - Polar Coordinate Dimensions
    Figure A-36 - Repetitive Features and Dimensions
    Figure A-37 - Equal Spacing of Features
    Figure B-1 - Limit Dimensions
    Figure B-2 - Plus or Minus Tolerances
    Figure C-1 - Mathematical Quadrants
    Figure C-2 - Locating A Circuit Pattern Using

    Abstract - (Show below) - (Hide below)

    Covers tolerancing and dimensioning of electronic packaging comprehensively and in-sync with other IPC printed board standards such as IPC-6021A and IPC-2221. Includes fundamental tolerancing and dimensioning rules, orientation and form tolerances, profile, and detailed geometric symbology. Encompasses over 100 new and revised illustrations. This document which is invaluable to the PWB designer will help manufacturers and board purchasers achieve the most manufacturable board designs.

    General Product Information - (Show below) - (Hide below)

    Development Note Supersedes IPC D 300. (07/2000) Included in IPC C 105 & IPC C 1000. (07/2008)
    Document Type Standard
    Publisher Institute of Printed Circuits
    Status Current
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

    DSCC 11001 : 0 PRINTED WIRING BOARD, FLEXIBLE, TYPE 1 (SINGLE-SIDED ) WITH UNSUPPORTED HOLES, WITH OR WITHOUT STIFFENER
    IPC D 325 : A DOCUMENTATION REQUIREMENTS FOR PRINTED BOARDS
    BS EN 61182-2-2 : 2012 PRINTED BOARD ASSEMBLY PRODUCTS - MANUFACTURING DESCRIPTION DATA AND TRANSFER METHODOLOGY - PART 2-2: SECTIONAL REQUIREMENTS FOR IMPLEMENTATION OF PRINTED BOARD FABRICATION DATA DESCRIPTION
    DSCC 11004 : 0 PRINTED WIRING BOARD, RIGID FLEX, TYPE 4 (MULTILAYERED) WITH SUPPORTED HOLES, WITH STIFFENER
    DSCC 11005 : 0 PRINTED WIRING BOARD, RIGID FLEX, TYPE 5 (MULTILAYER) WITH UNSUPPORTED HOLES, WITH OR WITHOUT STIFFENER
    PD IEC/PAS 61182-12:2014 Generic requirements for printed board assembly products manufacturing description data and transfer methodology
    IEC 61182-2:2006 Printed board assembly products - Manufacturing description data and transfer methodology - Part 2: Generic requirements
    EN 61182-2-2 : 2012 PRINTED BOARD ASSEMBLY PRODUCTS - MANUFACTURING DESCRIPTION DATA AND TRANSFER METHODOLOGY - PART 2-2: SECTIONAL REQUIREMENTS FOR IMPLEMENTATION OF PRINTED BOARD FABRICATION DATA DESCRIPTION (IEC 61182-2-2:2012)
    DSCC 11002 : 0 PRINTED WIRING BOARD, FLEXIBLE, TYPE 2 (DOUBLE-SIDED) WITH PLATED THROUGH HOLES, WITH OR WITHOUT STIFFENER
    IPC 2581 : B GENERIC REQUIREMENTS FOR PRINTED BOARD ASSEMBLY PRODUCTS MANUFACTURING DESCRIPTION DATA AND TRANSFER METHODOLOGY
    IEC PAS 61182-12:2014 Generic requirements for printed board assembly products manufacturing description data and transfer methodology
    DSCC 11003 : 0 PRINTED WIRING BOARD, FLEXIBLE, TYPE 3 (MULTILAYER) WITH PLATED THROUGH HOLES, WITH OR WITHOUT STIFFENER
    IEC 61182-2-2:2012 Printed board assembly products - Manufacturing description data and transfer methodology - Part 2-2: Sectional requirements for implementation of printed board fabrication data description
    BS IEC 61182-2:2006 PRINTED BOARD ASSEMBLY PRODUCTS - MANUFACTURING DESCRIPTION DATA AND TRANSFER METHODOLOGY - PART 2: GENERIC REQUIREMENTS
    I.S. EN 61182-2-2:2012 PRINTED BOARD ASSEMBLY PRODUCTS - MANUFACTURING DESCRIPTION DATA AND TRANSFER METHODOLOGY - PART 2-2: SECTIONAL REQUIREMENTS FOR IMPLEMENTATION OF PRINTED BOARD FABRICATION DATA DESCRIPTION (IEC 61182-2-2:2012 (EQV))
    MIL HDBK 1861 : B SELECTION AND USE OF ELECTRICAL AND ELECTRONIC ASSEMBLIES, BOARDS, CARDS AND ASSOCIATED HARDWARE
    IPC 2221B:2012 GENERIC STANDARD ON PRINTED BOARD DESIGN
    IPC 2221 FRENCH : B2012 GENERIC STANDARD ON PRINTED BOARD DESIGN

    Standards Referencing This Book - (Show below) - (Hide below)

    IPC 2220 : LATEST IPC 2220 FAMILY OF DESIGN DOCUMENTS
    IPC D 325 : A DOCUMENTATION REQUIREMENTS FOR PRINTED BOARDS
    IPC S 100 : LATEST STANDARDS AND SPECIFICATIONS MANUAL
    IPC M 105 : LATEST RIGID PRINTED BOARD MANUAL
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