IEC TR 60286-3-4:2021

Packaging of components for automatic handling - Part 3-4: Packaging of surface mount components on continuous embossed tapes for Auto Loading Feeder

IEC TR 60286-3-4:2021(E) considers the proposed requirements for emboss taping for the Auto Loading Feeder mechanism to mount electric components without leads or with stump type leads used for electric circuits. This document is applicable to the embossed carrier tape, with single round sprocket holes, with tape pitches of 2 mm or more (nominal tape width: 8 mm only) among the tapes of Type 2a in IEC 60286-3.
The contents of the corrigendum of June 2022 have been included in this copy.

General Information

• Status: Published
• Publication Date: 21-Oct-2021
• ICS: 31.020 - Electronic components in general
• ICS: 31.240 - Mechanical structures for electronic equipment
• Technical Committee: TC 40 - Capacitors and resistors for electronic equipment
• Drafting Committee: PT 60286-3-4 - TC 40/PT 60286-3-4
• Current Stage: PPUB - Publication issued
• Start Date: 22-Oct-2021
• Completion Date: 19-Nov-2021

Relations

• Corrected By: IEC TR 60286-3-4:2021/COR1:2022 - Corrigendum 1 - Packaging of components for automatic handling - Part 3-4: Packaging of surface mount components on continuous embossed tapes for Auto Loading Feeder
• Effective Date: 05-Sep-2023

Overview

IEC TR 60286-3-4:2021 is a Technical Report from the IEC (included corrigendum June 2022) that addresses emboss taping for the Auto Loading Feeder mechanism used to handle surface-mount devices (SMDs). It focuses on continuous embossed carrier tapes (Type 2a in IEC 60286-3) with single round sprocket holes, tape pitches of 2 mm or more, and a nominal tape width of 8 mm. The report presents proposed requirements, discussion items and recommended dimensions to improve reliable automatic exposure and feeding of components without leads or with stump-type leads.

Key Topics and Technical Requirements

The report collects practical considerations and suggested specifications rather than prescriptive clauses. Key technical topics include:

• Carrier tape geometry and features

  • Embossed pocket shapes, recessed cross-bar sections and relationships to component top surfaces.
  • Single round sprocket holes and compatibility with tape camber.

• Cover tape design and sealing

  • Required sealed positions of the cover tape and recommended sealing methods (including dot-seal considerations).
  • Denting of cover tape over pockets and implications for peel-off and component adhesion.
  • Minimum peel-off strength and adhesion concerns to ensure reliable automated removal.

• Dimensional relationships

  • Distances between the upper side of the carrier tape (and recessed parts) and the top surface of components (identified as key dimensions in the report).
  • Considerations for trailer/leader lengths, tail-end fixing and bottom holes of pockets.

• Auto Loading Feeder interactions

  • How feeder exposure mechanisms (single-door and double-door methods described in annexes) interact with tape and cover-tape geometry.
  • Possible problems such as tape camber effects, tape thickness limits and exposure reliability.

• Informative annexes

  • Annex A: methods/mechanisms for automatically exposing pockets (single-door and double-door).
  • Annex B: glossary of mounter and feeder related terms.

Applications and Who Uses This Standard

IEC TR 60286-3-4:2021 is intended for stakeholders involved in automated surface-mount assembly and packaging of electronic components:

• Mounter and feeder manufacturers designing Auto Loading Feeder systems.
• Component and tape packaging manufacturers specifying emboss taping and cover-tape processes.
• SMT process engineers and PCB assembly houses seeking compatibility and higher uptime in automated lines.
• Quality, procurement and standards teams aiming to harmonize tape-feeder interfaces.

Practical benefits include improved interoperability between embossed tapes and Auto Loading Feeders, reduced feed errors, and enhanced reliability of automatic tape exchanges on SMT lines.

Related Standards

• IEC 60286 series - Packaging of components for automatic handling
• IEC 60286-3 (Type 2a details) - referenced for tape classifications and broader tape requirements

Keywords: IEC TR 60286-3-4:2021, emboss taping, Auto Loading Feeder, embossed tapes, carrier tape, surface mount components, SMT packaging, sprocket holes, tape pitch.

Standards Content (Sample)

IEC TR 60286-3-4 ®
Edition 1.0 2021-10
TECHNICAL
REPORT
colour
inside
Packaging of components for automatic handling –
Part 3-4: Packaging of surface mount components on continuous embossed
tapes for Auto Loading Feeder
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IEC TR 60286-3-4 ®
Edition 1.0 2021-10
TECHNICAL
REPORT
colour
inside
Packaging of components for automatic handling –

Part 3-4: Packaging of surface mount components on continuous embossed

tapes for Auto Loading Feeder
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.020; 31.240 ISBN 978-2-8322-1041-4

– 2 – IEC TR 60286-3-4:2021 © IEC 2021
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and symbols. 7
3.1 Terms and definitions . 7
3.2 Symbols . 8
4 Overview of Auto Loading Feeder . 8
4.1 Overview and features of Auto Loading Feeder . 8
4.2 Methods and mechanisms of automatically exposing the pockets in using
Auto Loading Feeder. 9
5 Discussion items for requirements for emboss taping for Auto Loading Feeder . 10
5.1 General . 10
5.2 Required dimensions for the cover tape sealed positions . 10
5.3 Required dimensions for the distance between the upper side of the carrier
tape and the top surface of a component in using Auto Loading Feeder . 11
5.4 Necessity of M and M as the cover tape sealed positions . 11
1 2
5.5 Necessity of K as the distance between the upper side of the carrier tape
and the top surface of a component . 12
5.6 Necessity of K as the recessed part in a cross-bar section . 13
5.7 Necessity of K as the distance between the upper side of the recessed part
in a cross-bar section and the top surface of a component . 14
5.8 Sealing method for the cover tape . 15
5.9 Dent of the cover tape over the pockets . 15
5.10 Lower limit of peel-off strength of the cover tape . 16
5.11 Adhesion of components on the cover tape . 16
5.12 Bottom hole of pockets of the carrier tape . 16
5.13 Maximum trailer length . 17
5.14 Fixing the tail end of the carrier tape . 17
6 Summary of the discussions: considered requirements and dimensions for emboss
taping for Auto Loading Feeder. 17
6.1 General . 17
6.2 Required dimensions for the cover tape sealed positions . 18
6.3 Required dimensions for the distance between the upper side of the carrier
tape and the top surface of a component . 18
6.4 Required specifications for the sealing method of the cover tape . 18
6.5 Required specifications for maximum trailer length . 18
7 Possible problems for emboss taping for Auto Loading Feeder . 18
7.1 General . 18
7.2 Relationship between sealed positions of the cover tape and openings of the
pockets . 18
7.3 Recessed part in a cross-bar section . 19
7.4 Dot seals . 19
7.5 Thickness of embossed carrier tape . 20
7.6 Relationship between Auto Loading Feeder and tape camber specified in
IEC 60286-3 . 21

Annex A (informative)  Methods and mechanisms of automatically exposing pockets
in using Auto Loading Feeder . 22
A.1 General . 22
A.2 Single-door method . 22
A.3 Double-door method . 22
Annex B (informative)  Glossary . 24
Bibliography . 26

Figure 1 – Specified dimensions for emboss taping for Auto Loading Feeder . 8
Figure 2 – Operation and features when another tape is re-supplied automatically by
the Auto Loading Feeder . 9
Figure 3 – Example of a part of embossed carrier tape with a recessed part in a cross-
bar section . 13
Figure 4 – Relationship between the cover tape and the exposure processing
mechanism of the pocket . 13
Figure 5 – Relationship between the exposure processing mechanism of the pocket
and convex of carrier tape . 14
Figure 6 – Example dent of the cover tape over the pocket . 15
Figure 7 – Leader part and trailer part . 18
Figure 8 – Dimension B and sealed positions . 19
Figure 9 – Example of dot seal. 20
Figure 10 – Relationship between embossed carrier tape thickness and component
exposure process . 21
Figure 11 – Tape camber (top view) . 21
Figure A.1 – Overview of the single-door method . 22
Figure A.2 – Overview of the double-door method . 23

Table 1 – Symbols used in figures and tables . 8
Table 2 – The cover tape sealed positions required for emboss taping for Auto
Loading Feeder . 11
Table 3 – Distance between the upper side of the carrier tape and the top surface of a

component required for emboss taping for Auto Loading Feeder . 11
Table B.1 – Glossary of mounter and feeder related terms . 24

– 4 – IEC TR 60286-3-4:2021 © IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
PACKAGING OF COMPONENTS FOR AUTOMATIC HANDLING –

Part 3-4: Packaging of surface mount components
on continuous embossed tapes for Auto Loading Feeder

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
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
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.
IEC TR 60286-3-4 has been prepared by IEC technical committee 40: Capacitors and resistors
for electronic equipment. It is a Technical Report.
The text of this Technical Report is based on the following documents:
Draft Report on voting
40/2844/DTR 40/2866/RVDTR
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this Technical Report is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available

at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/standardsdev/publications.
A list of all parts in the IEC 60286 series, published under the general title Packaging of
components for automatic handling, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under 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 document 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.

– 6 – IEC TR 60286-3-4:2021 © IEC 2021
INTRODUCTION
This Technical Report was developed by the technical committee 40 working group 36 on
components packaging, in which the members, such as mounter manufacturers, component
manufacturers and packaging material manufacturers, had proposed, considered and discussed
the possible standardization of the application of Auto Loading Feeder to enable automatically
exchange SMD continuous tapes, using paper carrier tape during mounter operation, aiming to
support IEC 60286-3, Edition 6, issued in 2019.
This document includes data expressed in the form of provisions, such as requirements or
recommendations. These data, however, do not claim to be provisions and are just suggested
as the results of the discussion.
The International Electrotechnical Commission (IEC) draws attention to the fact that it is claimed
that compliance with this document may involve the use of a trademark concerning Auto Loading
Feeder given in 3.1.1.
• Trademark . AUTO LOADING FEEDER™
• Trademark registration number . No.5983611 (Japan)
IEC takes no position concerning the evidence, validity and scope of this trademark right.
The holder of this trademark right has assured the IEC that he/she is willing to negotiate
licences under reasonable and non-discriminatory terms and conditions with applicants
throughout the world. In this respect, the statement of the holder of this trademark right is
registered with IEC. Information may be obtained from:
• Name of holder of trademark right . Yamaha Motor Co., Ltd.
Address . 2500 Shingai, Iwata, Shizuoka, Japan
• Name of holder of trademark right . FUJI CORPORATION
Address . 19 Chausuyama., Yamamachi, Chiryu, Aichi, Japan
• Name of holder of trademark right . Panasonic Corporation
Address . 2-7, Matsuba-cho, Kadoma, Osaka, Japan
Attention is drawn to the possibility that some of the elements of this document may be the
subject of trademark rights other than those identified above. IEC shall not be held responsible
for identifying any or all such trademark rights.

PACKAGING OF COMPONENTS FOR AUTOMATIC HANDLING –

Part 3-4: Packaging of surface mount components
on continuous embossed tapes for Auto Loading Feeder

1 Scope
This part of IEC 60286 considers the proposed requirements for emboss taping for the Auto
Loading Feeder mechanism to mount electric components without leads or with stump type
leads used for electric circuits. This document is applicable to the embossed carrier tape, with
single round sprocket holes, with tape pitches of 2 mm or more (nominal tape width: 8 mm only)
among the tapes of Type 2a in IEC 60286-3.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes the statement of this document. For dated references, only the edition cited applies.
For undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 60286-3:2019, Packaging of components for automatic handling – Part 3: Packaging of
surface mount components on continuous tapes
3 Terms, definitions and symbols
3.1 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
NOTE Annex B features a Glossary of mounter and feeder related terms.
3.1.1
Auto Loading Feeder
AUTO LOADING FEEDER™
tape feeder that can keep supplying components by automatically carrying a tape of re-supplied
SMD at the filling-in position into the components supply position, just after the components in
the tape of previously supplied SMD are fed up during the assembly production
Note 1 to entry: Auto Loading Feeder has the mechanism that the cover tape of a SMD tape is automatically cut or
peeled off to expose the pockets during the operation to supply components.
3.1.2
seal
bonding of a part of the top cover tape and a part of the carrier tape
Note 1 to entry: The top cover tapes are classified as heat welding type and adhesive type by the way to bond itself
on the carrier tape.
– 8 – IEC TR 60286-3-4:2021 © IEC 2021
3.1.3
cross-bar
section between openings of the pockets adjacent to each other in the direction of pulling out
an embossed carrier tape
3.2 Symbols
The symbols used in this document are shown in Table 1 and Figure 1.
Table 1 – Symbols used in figures and tables
Figures and tables
Symbol Description
using the symbol
B Cross-tape dimension of the bottom surface of a pocket Figure 1, Table 2,
Table 3 and Figure 8
B Cross-tape dimension of the opening of a pocket Figure 1 and Figure 8
M Distance between the reference point of the sprocket holes (centre) and Figure 1 and Table 2
the inner side of the seal on the upper end side, which is near the
sprocket holes, of the carrier tape
M Distance between the reference point of the sprocket holes (centre) and Figure 1 and Table 2
the inner side of the seal on the lower end side, which is far from the
sprocket holes, of carrier tape
K Distance between the upper side of the carrier tape and the top surface Figure 1 and Table 3
of a component
K Distance between the upper side of the carrier tape and the upper side of Figure 1, Figure 3 and
the recessed part in a cross-bar section Table 3
K Distance between the upper side of the recessed part in a cross-bar Figure 1, Figure 3 and
section and the top surface of a component Table 3

Figure 1 – Specified dimensions for emboss taping for Auto Loading Feeder
4 Overview of Auto Loading Feeder
4.1 Overview and features of Auto Loading Feeder
A characteristic example for operation of an Auto Loading Feeder is shown in Figure 2. Just
after the components in a SMD tape get used up in the mounting process, another tape for re-
supply set at the filling-in position is automatically carried to the components supply position
and the pockets are automatically exposed. That results in re-supplying the components
automatically. That is to say, this mechanism enables to keep supplying components without
the conventional splicing work using a connection tape, which requires man-hours and specific

skills. In addition, it enables to largely reduce work hours during the work at offline setup,
because just inserting the top end of the tape in the re-supply position enables to supply the
tape automatically in the same way as during supplying components in the mounting process.
Auto Loading Feeder enables to boost up operating rate of mounters, save man-power and
resource in the components mounting field of electrical and electronic manufactures, and is
expected to get more popularization as the next generation supply system.
NOTE The splicing work is to connect the cut-off end of the trailer part of an in-use SMD tape and the cut-off tip of
the leader part of a SMD tape for re-supply, by using a connection tape.

a) Supplying components during the assemble production

b) Supplying tape at offline setup

Figure 2 – Operation and features when another tape is
re-supplied automatically by the Auto Loading Feeder
4.2 Methods and mechanisms of automatically exposing the pockets in using Auto
Loading Feeder
The methods and mechanisms of automatically exposing the pockets in using Auto Loading
Feeder are classified as follows. See Annex A for details.
a) The single-door method with which only one sealed side of the cover tape is peeled off to
expose the pockets (see Clause A.2);
b) The double-door method with which the centre of the cover tape is cut in to expose the
pockets (see Clause A.3).
– 10 – IEC TR 60286-3-4:2021 © IEC 2021
IEC 60286-3 describes some requirements provided that the cover tape should be peeled off
and removed. Auto Loading Feeder mechanism, however, needs other requirements about the
sealed position of the cover tape on the carrier tape in order to maintain its stable operation
since the mechanism leaves the cover tape on the carrier tape.
5 Discussion items for requirements for emboss taping for Auto Loading
Feeder
5.1 General
New requirements for emboss taping for Auto Loading Feeder are to be considered in addition
to the requirements for the embossed carrier tape, with single round sprocket holes, with tape
pitches of 2 mm or more (nominal tape width: 8 mm only) among the tapes of Type 2a in
IEC 60286-3:
a) Required dimensions for the cover tape sealed positions (see 5.2);
b) Required dimensions for the distance between the upper side of the carrier tape and the top
surface of a component (see 5.3);
c) Necessity of M and M as the cover tape sealed positions (see 5.4);
1 2
d) Necessity of K as the distance between the upper side of the carrier tape and the top
surface of a component (see 5.5);
e) Necessity of K as the recessed part in a cross-bar section (see 5.6);
f) Necessity of K as the distance between the upper side of the recessed part in a cross-bar
section and the top surface of a component (see 5.7);
g) Sealing method for the cover tape (see 5.8);
h) Dent of the cover tape over the pockets (see 5.9);
i) Lower limit of the cover tape peel-off strength (see 5.10);
j) Adhesion of components on the cover tape (see 5.11);
k) Hole of the bottom of the pockets of the carrier tape (see 5.12);
l) Maximum length of the trailer (see 5.13);
m) Fixing the tail end of the carrier tape (see 5.14).
5.2 Required dimensions for the cover tape sealed positions
Required dimensions for the cover tape sealed positions for Auto Loading Feeder are shown in
Table 2.
Table 2 – The cover tape sealed positions required
for emboss taping for Auto Loading Feeder
Dimensions in millimetres
Typical Required dimension (design value)
B
nominal component
M M
dimension
1 2
> 0 0,5 or less 0402M 2,9 or less 4,1 or more
Over 0,5 0,8 or less 0603M 2,9 or less 4,1 or more
Over 0,8 1,3 or less 1005M 2,6 or less 4,4 or more
Over 1,3 2,1 or less 1608M 2,2 or less 4,8 or more
a a
Over 2,1 2,6 or less 2012M
(2,0 or less) (5,0 or more)
a a
Over 2,6 3,5 or less 3216M
(1,5 or less) (5,5 or more)
NOTE 1 The symbols are shown in Table 1 and Figure 1.
NOTE 2 SMD tapes with sealed pockets are not applicable to Auto Loading Feeder.
NOTE 3 Sealing tape should be attached symmetric to the centre of the pocket.
a
Since the components can be inverted in the pockets and there are some restrictions in the assembly
manufacturing, the dimensions are shown as reference values in brackets. If the tapes do not meet these
dimensions, persons involved are suggested to discuss in advance whether it is possible to use Auto Loading
Feeder or not.
5.3 Required dimensions for the distance between the upper side of the carrier tape
and the top surface of a component in using Auto Loading Feeder
Required dimensions for the distance between the upper side of the carrier tape and the top
surface of a component for Auto Loading Feeder are shown in Table 3.
Table 3 – Distance between the upper side of the carrier tape and the top
surface of a component required for emboss taping for Auto Loading Feeder
Dimensions in millimetres
Typical Required dimension (design value)
B
nominal component
K K K
dimension 1 2 3
a a a
> 0 0,5 or less 0402M
(0,03 or more) (0,02 or less) (0,03 or more)
a a a
Over 0,5 0,8 or less 0603 M
(0,03 or more) (0,02 or less) (0,03 or more)
a a
Over 0,
...