IEC 62878-2-5:2019

Device embedding assembly technology - Part 2-5: Guidelines - Implementation of a 3D data format for device embedded substrate

IEC 62878-2-5:2019 specifies requirements based on XML schema that represents a design data format for device embedded substrate, which is a board comprising embedded active and passive devices whose electrical connections are made by means of a via, electroplating, conductive paste or printing of conductive material.
This data format is to be used for simulation (e.g. stress, thermal, EMC), tooling, manufacturing, assembly, and inspection requirements. Furthermore, the data format is used for transferring information among printed board designers, printed board simulation engineer, manufacturers, and assemblers.
IEC 62878-2-5:2019 applies to substrates using organic material. It neither applies to the re-distribution layer (RDL) nor to the electronic modules defined as M-type business model in IEC 62421.

Technologie d’ensemble avec appareil(s) intégré(s) - Partie 2-5 : Lignes directrices - Mise en œuvre d’un format de données 3D pour un substrat avec appareil(s) intégré(s)

L’IEC 62878-2-5:2019 spécifie des exigences fondées sur le schéma XML qui représente un format de données de conception pour le substrat avec appareil(s) intégré(s), c’est-à-dire une carte avec appareil(s) intégré(s) actif(s) ou passif(s) dont les connexions électriques se font au moyen d’un trou de liaison, de galvanoplastie, de pâte conductrice ou d’impression du matériau conducteur.
Ce format de données doit être utilisé pour les exigences de simulation (par exemple, contrainte, thermique, compatibilité électromagnétique), d’outillage, de fabrication, d’assemblage et d’examen. De plus, le format de données est utilisé pour le transfert d’informations entre les concepteurs de cartes imprimées, les ingénieurs de simulation des cartes imprimées, les fabricants et les assembleurs.
La présente partie de l’IEC 62878 s’applique aux substrats utilisant des matériaux organiques. Elle ne s'applique ni à la couche de redistribution (RDL, re-distribution layer), ni aux modules électroniques définis comme un modèle commercial de type M dans l'IEC 62421.

General Information

• Status: Published
• Publication Date: 15-Sep-2019
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 31.180 - Printed circuits and boards
• ICS: 31.190 - Electronic component assemblies
• Technical Committee: TC 91 - Electronics assembly technology
• Current Stage: PPUB - Publication issued
• Completion Date: 16-Sep-2019

Standards Content (Sample)

IEC 62878-2-5
Edition 1.0 2019-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Device embedding assembly technology –
Part 2-5: Guidelines – Implementation of a 3D data format for device embedded
substrate
Technologie d’ensemble avec appareil(s) intégré(s) –
Partie 2-5: Lignes directrices – Mise en œuvre d’un format de données 3D
pour un substrat avec appareil(s) intégré(s)
IEC 62878-2-5:2019-09 (en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 62878-2-5
Edition 1.0 2019-01
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Device embedding assembly technology –
Part 2-5: Guidelines – Implementation of a 3D data format for device embedded
substrate
Technologie d’ensemble avec appareil(s) intégré(s) –
Partie 2-5: Lignes directrices – Mise en œuvre d’un format de données 3D
pour un substrat avec appareil(s) intégré(s)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 31.180; 31.190 ISBN 978-2-8322-7768-3

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 62878-2-5:2019 © IEC 2019
CONTENTS

FOREWORD ........................................................................................................................... 5

1 Scope .............................................................................................................................. 7

2 Normative references ...................................................................................................... 7

3 Terms and definitions ...................................................................................................... 7

4 Data definition ............................................................................................................... 10

4.1 Flow chart design of device embedded substrate .................................................. 10

4.2 Applicable range ................................................................................................... 11

4.2.1 Product .......................................................................................................... 11

4.2.2 Process ......................................................................................................... 12

4.3 Features ............................................................................................................... 13

4.3.1 General ......................................................................................................... 13

4.3.2 Device embedded substrate structure ............................................................ 13

4.3.3 SiP interposer structure ................................................................................. 14

4.3.4 Virtual layer description ................................................................................. 15

4.3.5 Terminal structure and embedded device structure including an SiP .............. 15

4.3.6 Total design data of an SiP and device embedded substrate ......................... 15

4.4 Data description summary ..................................................................................... 16

4.4.1 Type of data and structures ........................................................................... 16

4.4.2 File structure ................................................................................................. 18

4.5 3D expression ....................................................................................................... 19

4.5.1 General ......................................................................................................... 19

4.5.2 Coordinates ................................................................................................... 19

4.5.3 Position description ....................................................................................... 20

4.5.4 Relation between coordinate origin and board position .................................. 20

4.6 Layer concept ....................................................................................................... 21

4.7 Substrate data ...................................................................................................... 21

4.7.1 General ......................................................................................................... 21

4.7.2 Layer map information ................................................................................... 22

4.7.3 Device arrangement information .................................................................... 23

4.7.4 Basic figures .................................................................................................. 25

4.7.5 Net information .............................................................................................. 31

4.7.6 Artwork information ........................................................................................ 32

4.7.7 Package information ...................................................................................... 32

4.7.8 External port information................................................................................ 33

4.7.9 Internal port information ................................................................................. 33

4.7.10 User expansion information ........................................................................... 33

4.8 Defined data ......................................................................................................... 33

4.8.1 General ......................................................................................................... 33

4.8.2 Layer definition .............................................................................................. 33

4.8.3 Land definition ............................................................................................... 34

4.8.4 Via definition ................................................................................................. 35

4.8.5 Device definition ............................................................................................ 36

4.8.6 User expansion definition .............................................................................. 37

5 Data organization and data description based on XML schema ...................................... 38

5.1 General ................................................................................................................. 38

5.2 Data organization of Example 1 ............................................................................ 38

5.3 Data description of layer stack-up ......................................................................... 39

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IEC 62878-2-5:2019 © IEC 2019 – 3 –

5.4 Data description of device ..................................................................................... 43

5.5 Data organization of layer ..................................................................................... 47

5.6 Data description of via .......................................................................................... 50

5.7 Data description of land ........................................................................................ 51

Bibliography .......................................................................................................................... 53

Figure 1 – Flow chart of design of device embedded substrate ............................................. 11

Figure 2 – General structure of device embedded substrate .................................................. 12

Figure 3 – Example of device embedded substrate structure................................................. 14

Figure 4 – Examples of SiPs ................................................................................................. 14

Figure 5 – Example of virtual layer description ...................................................................... 15

Figure 6 – Terminal structure ................................................................................................ 15

Figure 7 – Structure of SiP on a device embedded substrate ................................................ 16

Figure 8 – Data structure ...................................................................................................... 18

Figure 9 – One file structure (recommended) ........................................................................ 19

Figure 10 – Two file structure ............................................................................................... 19

Figure 11 – Definition of coordinates ..................................................................................... 20

Figure 12 – Position definition ............................................................................................... 20

Figure 13 – Relation between coordinates and board position ............................................... 21

Figure 14 – Layer concept .................................................................................................... 21

Figure 15 – Layer construction .............................................................................................. 22

Figure 16 – Simplified layer construction ............................................................................... 23

Figure 17 – Layer definition of pad connection ...................................................................... 24

Figure 18 – Layer definition of via connection ....................................................................... 24

Figure 19 – Rotation direction on X, Y, and Z axes ................................................................ 25

Figure 20 – Point .................................................................................................................. 26

Figure 21 – Area ................................................................................................................... 27

Figure 22 – Lines .................................................................................................................. 27

Figure 23 – Letters ............................................................................................................... 28

Figure 24 – Letter shape ....................................................................................................... 28

Figure 25 – Bonding wire information .................................................................................... 29

Figure 26 – Semi-sphere ....................................................................................................... 29

Figure 27 – Truncated pyramid ............................................................................................. 30

Figure 28 – Via ..................................................................................................................... 30

Figure 29 – Device definition ................................................................................................ 31

Figure 30 – Group ................................................................................................................. 31

Figure 31 – Data structure of net information ........................................................................ 32

Figure 32 – Relation of layer definition data .......................................................................... 34

Figure 33 – Land definition ................................................................................................... 35

Figure 34 – Relation between hole information and land information ..................................... 36

Figure 35 – Device with internal connection information ........................................................ 37

Figure 36 – Device without internal connection information ................................................... 37

Figure 37 – Cross sectional view of Example 1 ..................................................................... 38

Figure 38 – Data organization of Example 1 .......................................................................... 38

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– 4 – IEC 62878-2-5:2019 © IEC 2019

Figure 39 – Data descripion of Example 1 ............................................................................. 39

Figure 40 – Layer structure of Example 1 .............................................................................. 40

Figure 41 – Data description of layer stack-up ...................................................................... 42

Figure 42 – Configuration of device 1.................................................................................... 43

Figure 43 – Data description of device 1 ............................................................................... 44

Figure 44 – Configuration of device 2.................................................................................... 45

Figure 45 – Data description of device 2 ............................................................................... 46

Figure 46 – Layer view of Example 1 .................................................................................... 48

Figure 47 – Data description of layers ................................................................................... 50

Figure 48 – Type of vias ....................................................................................................... 51

Figure 49 – Data description of vias ...................................................................................... 51

Figure 50 – Type of lands ..................................................................................................... 52

Figure 51 – Data description of lands .................................................................................... 52

Table 1 – Required information ............................................................................................. 13

Table 2 – List of data ............................................................................................................ 17

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IEC 62878-2-5:2019 © IEC 2019 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DEVICE EMBEDDING ASSEMBLY TECHNOLOGY –
Part 2-5: Guidelines – Implementation of a 3D data format
for device embedded substrate
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international

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9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent

rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 62878-2-5 has been prepared by IEC technical committee 91:

Electronics assembly technology.

This bilingual version (2020-01) corresponds to the monolingual English version, published in

2019-09.

This first edition cancels and replaces IEC PAS 62878-2-5 published in 2015. This edition

constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous

edition:

a) the title has been changed to "Implementation of a 3D data format for device embedded

substrate" from "Requirements of design date format for device embedded substrate";

b) the scope of this implementation has changed to not include SiPs.
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– 6 – IEC 62878-2-5:2019 © IEC 2019
The text of this International Standard is based on the following documents:
CDV Report on voting
91/1557/CDV 91/1589/RVC

Full information on the voting for the approval of this International Standard can be found in the

report on voting indicated in the above table.
The French version of this standard has not been voted upon.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

A list of all parts in the IEC 62878 series, published under the general title Device embedding

assembly technology, can be found on the IEC website.

Future standards in this series will carry the new general title as cited above. Titles of existing

standards in this series will be updated at the time of the next edition.

The committee has decided that the contents of this document will remain unchanged until the

stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to

the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates

that it contains colours which are considered to be useful for the correct

understanding of its contents. Users should therefore print this document using a

colour printer.
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IEC 62878-2-5:2019 © IEC 2019 – 7 –
DEVICE EMBEDDING ASSEMBLY TECHNOLOGY –
Part 2-5: Guidelines – Implementation of a 3D data format
for device embedded substrate
1 Scope

This part of IEC 62878 specifies requirements based on XML schema that represents a design

data format for device embedded substrate, which is a board comprising embedded active and

passive devices whose electrical connections are made by means of a via, electroplating,

conductive paste or printing of conductive material.

This data format is to be used for simulation (e.g. stress, thermal, EMC), tooling, manufacturing,

assembly, and inspection requirements. Furthermore, the data format is used for transferring

information among printed board designers, printed board simulation engineer, manufacturers,

and assemblers.

This part of IEC 62878 applies to substrates using organic material. It neither applies to the

re-distribution layer (RDL) nor to the electronic modules defined as M-type business model in

IEC 62421.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
artwork information

information that shows a SiP not included in net and figure data in board (symbol mark, inside

of SiP, mould, spacer, remarks, etc.)
3.2
board information
total information of a device-embedded substrate, including embedded devices
3.3
chip stack
package of semiconductor chips stacked vertically
3.4
clearance

area around a through-hole where there is no conductor to prevent electrical connection

between a large conductor area, such as that of a power supply or a ground and a plated

through-hole
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– 8 – IEC 62878-2-5:2019 © IEC 2019
3.5
computer-aided manufacturing
CAM

interactive use of computer systems, programs, and procedures in various phases of a

manufacturing process wherein the decision-making activity rests with the human operator and

a computer provides the data manipulation functions
3.6
computer-aided design
CAD

interactive use of computer systems, programs, and procedures in the design process wherein

the decision-making activity rests with the human operator and a computer provides the data

manipulation function
3.7
DXF
data format for AutoCAD

Note 1 to entry: AutoCAD is the trade name of a product supplied by Autodesk®. This information is given for the

convenience of users of this document and does not constitute an endorsement by IEC of the product named.

Equivalent products may be used if they can be shown to lead to the same results.

Note 2 to entry: It generally means a type of data format to draw figures using CAD board data.

3.8
design document
documentation of information necessary in circuit board design
3.9
device arrangement information

information that includes the position, the shape and attributes of the embedding device

included in the net information
3.10
device embedded substrate

substrate in which an active device(s) (semiconductor device) and/or passive device(s) (e.g.

resistor, capacitor) is formed using thick-film technology or by embedding it within the substrate

3.11
FLIP chip

leadless monolithic circuit element structure that electrically and mechanically interconnects to

a printed board by conductive bumps
3.12
Gerber

type of data format that consists of aperture selection and operation commands and dimensions

in X- and Y-coordinates

Note 1 to entry: The data is generally used to direct a photo-plotter in generating photo-plotted artwork.

Note 2 to entry: Gerber is the trade name of a product supplied by Ucamco. This information is given for the

convenience of users of this document and does not constitute an endorsement by IEC of the product named.

Equivalent products may be used if they can be shown to lead to the same results.

3.13
interposer

material placed between two surfaces giving electrical insulation, redistribution of electrical

connections, mechanical strength and/or controlled mechanical and thermal separation

between the two surfaces
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IEC 62878-2-5:2019 © IEC 2019 – 9 –

Note 1 to entry: An interposer may be used as a means for redistributing electrical connections and/or allowing for

different thermal expansions between adjacent surface
...