Mechanical standardization of semiconductor devices - Part 6-1: General rules for the preparation of outline drawings of surface mounted semiconductor device packages - Design guide for gull-wing lead terminals

Covers the requirements for the design rule of terminal shape plastic packages with gull-wing leads (e.g. QFP, SOP, SSOP, TSOP, etc.)

General Information

Status
Published
Publication Date
29-Oct-2001
Drafting Committee
WG 2 - TC 47/SC 47D/WG 2
Current Stage
PPUB - Publication issued
Start Date
15-Dec-2001
Completion Date
30-Oct-2001

Overview

IEC 60191-6-1:2001 is an international standard published by the International Electrotechnical Commission (IEC) that focuses on the mechanical standardization of semiconductor devices, specifically addressing the general rules for the preparation of outline drawings for surface-mounted semiconductor device packages. This part of the standard serves as a design guide for gull-wing lead terminals commonly used in plastic packages such as QFP (Quad Flat Package), SOP (Small Outline Package), SSOP (Shrink Small Outline Package), and TSOP (Thin Small Outline Package).

The standard establishes common requirements and design rules for the shape and dimensions of gull-wing leads to ensure consistency across various semiconductor packages classified as Form E in IEC 60191-4. By following this guide, semiconductor manufacturers, designers, and engineers can achieve improved compatibility, reliability, and manufacturability of surface-mounted devices.


Key Topics

  • Scope and Classification
    IEC 60191-6-1 covers plastic packages with gull-wing leads, focusing on lead shape design irrespective of specific package types to ensure uniformity and prevent terminal shape proliferation.

  • Outline Drawing Preparation
    The document sets out general rules for preparing outline drawings, ensuring mechanical dimensions and tolerances maintain device functionality and fit within automated assembly processes.

  • Terminal Design Specifications
    Detailed dimensions and tolerances for:

    • Terminal length, width, and thickness according to terminal pitch ranges (e.g., 1.27 mm, 1.0 mm, 0.5 mm, etc.)
    • Package height and stand-off height relative to different semiconductor package sizes.
    • Lead shape and bending angle, specifically for gull-wing lead ends to optimize solder joint reliability.
  • Tolerance and Coplanarity
    Defines allowable tolerance for terminal center positions and coplanarity to ensure proper alignment during surface mounting, critical for circuit board assembly accuracy.


Practical Applications

  • Semiconductor Package Design
    Manufacturers designing semiconductor devices with plastic gull-wing lead packages use IEC 60191-6-1 as a reference for mechanical dimensions and lead terminal shapes to ensure compliance with international norms.

  • PCB Assembly and Soldering
    Standardized gull-wing lead designs facilitate automated pick-and-place machine compatibility and predictable solder joint formation, enhancing surface mount technology (SMT) process quality.

  • Quality Assurance and Testing
    The defined tolerances help in creating effective inspection protocols for package uniformity and lead coplanarity, reducing defects such as misalignment or solder joint failure.

  • Component Interchangeability
    By adhering to the standard's design rules, components from different manufacturers can be more easily substituted, promoting interoperability and reduced design cycle times.


Related Standards

  • IEC 60191-4:1999
    Provides the coding system and classification of package outlines, including the Form E classification relevant for packages with gull-wing joints.

  • IEC 60191-6:1990
    Establishes the general rules for the preparation of outline drawings of surface-mounted semiconductor packages, serving as the foundational framework for Part 6-1.

  • ISO/IEC Directives Part 3
    Governs the drafting and structuring of standards and supports the development process of IEC 60191-6-1 to ensure clarity and consistency.


By implementing the guidelines from IEC 60191-6-1:2001, semiconductor industry stakeholders can standardize gull-wing leads effectively, ensuring mechanical compatibility and enhancing the reliability of surface mounted semiconductor devices. The consistency in design promoted by this standard helps reduce manufacturing costs, improve production efficiency, and sustain global supply chain interoperability.

Standard

IEC 60191-6-1:2001 - Mechanical standardization of semiconductor devices - Part 6-1: General rules for the preparation of outline drawings of surface mounted semiconductor device packages - Design guide for gull-wing lead terminals

English language
7 pages
sale 15% off
Preview
sale 15% off
Preview

Frequently Asked Questions

IEC 60191-6-1:2001 is a standard published by the International Electrotechnical Commission (IEC). Its full title is "Mechanical standardization of semiconductor devices - Part 6-1: General rules for the preparation of outline drawings of surface mounted semiconductor device packages - Design guide for gull-wing lead terminals". This standard covers: Covers the requirements for the design rule of terminal shape plastic packages with gull-wing leads (e.g. QFP, SOP, SSOP, TSOP, etc.)

Covers the requirements for the design rule of terminal shape plastic packages with gull-wing leads (e.g. QFP, SOP, SSOP, TSOP, etc.)

IEC 60191-6-1:2001 is classified under the following ICS (International Classification for Standards) categories: 31.080.01 - Semiconductor devices in general. The ICS classification helps identify the subject area and facilitates finding related standards.

IEC 60191-6-1:2001 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


INTERNATIONAL IEC
STANDARD
60191-6-1
First edition
2001-10
Mechanical standardization of semiconductor
devices –
Part 6-1:
General rules for the preparation of outline
drawings of surface mounted semiconductor
device packages –
Design guide for gull-wing lead terminals
Normalisation mécanique des dispositifs à semi-conducteurs –
Partie 6-1:
Règles générales pour la préparation des dessins
d'encombrement des dispositifs à semiconducteurs pour
montage en surface –
Guide de conception pour les boîtiers à broches
en forme d'ailes de mouette
Reference number
Publication numbering
As from 1 January 1997 all IEC publications are issued with a designation in the
60000 series. For example, IEC 34-1 is now referred to as IEC 60034-1.
Consolidated editions
The IEC is now publishing consolidated versions of its publications. For example,
edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the
base publication incorporating amendment 1 and the base publication incorporating
amendments 1 and 2.
Further information on IEC publications
The technical content of IEC publications is kept under constant review by the IEC,
thus ensuring that the content reflects current technology. Information relating to
this publication, including its validity, is available in the IEC Catalogue of
publications (see below) in addition to new editions, amendments and corrigenda.
Information on the subjects under consideration and work in progress undertaken
by the technical committee which has prepared this publication, as well as the list
of publications issued, is also available from the following:
• IEC Web Site (www.iec.ch)
• Catalogue of IEC publications
The on-line catalogue on the IEC web site (www.iec.ch/catlg-e.htm) enables
you to search by a variety of criteria including text searches, technical
committees and date of publication. On-line information is also available on
recently issued publications, withdrawn and replaced publications, as well as
corrigenda.
• IEC Just Published
This summary of recently issued publications (www.iec.ch/JP.htm) is also
available by email. Please contact the Customer Service Centre (see below) for
further information.
• Customer Service Centre
If you have any questions regarding this publication or need further assistance,
please contact the Customer Service Centre:
Email: custserv@iec.ch
Tel: +41 22 919 02 11
Fax: +41 22 919 03 00
INTERNATIONAL IEC
STANDARD
60191-6-1
First edition
2001-10
Mechanical standardization of semiconductor
devices –
Part 6-1:
General rules for the preparation of outline
drawings of surface mounted semiconductor
device packages –
Design guide for gull-wing lead terminals
Normalisation mécanique des dispositifs à semi-conducteurs –
Partie 6-1:
Règles générales pour la préparation des dessins
d'encombrement des dispositifs à semiconducteurs pour
montage en surface –
Guide de conception pour les boîtiers à broches
en forme d'ailes de mouette
 IEC 2001  Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or
mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Electrotechnical Commission 3, rue de Varembé Geneva, Switzerland
Telefax: +41 22 919 0300 e-mail: inmail@iec.ch IEC web site http://www.iec.ch
Commission Electrotechnique Internationale
PRICE CODE
G
International Electrotechnical Commission
For price, see current catalogue

– 2 – 60191-6-1  IEC:2001(E)
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MECHANICAL STANDARDIZATION OF SEMICONDUCTOR DEVICES –
Part 6-1: General rules for the preparation of outline drawings
of surface mounted semiconductor device packages –
Design guide for gull-wing lead terminals
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, the IEC publishes International Standards. Their preparation is
entrusted to technical committees; any IEC National Committee interested in the subject dealt with may
participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. The IEC collaborates closely with the International
Organization for Standardization (ISO) in accordance with conditions determined by agreement between the
two organizations.
2) The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an
international consensus of opinion on the relevant subjects since each technical committee has representation
from all interested National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60191-6-1 has been prepared by subcommittee 47D: Mechanical
standardization of semiconductor devices, of
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.

Loading comments...