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IEC 60191-2
Edition 1.0 2020-02
INTERNATIONAL
STANDARD
AMENDMENT 21
The sheets contained in this amendment are to be inserted in IEC 60191-2
Mechanical standardization of semiconductor devices –
Part 2: Dimensions
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IEC 60191-2
Edition 1.0 2020-02
INTERNATIONAL
STANDARD
AMENDMENT 21
The sheets contained in this amendment are to be inserted in IEC 60191-2
Mechanical standardization of semiconductor devices –
Part 2: Dimensions
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 31.080.01 ISBN 978-2-8322-7865-9
INSTRUCTIONS FOR THE INSERTION
OF NEW PAGES IN IEC 60191-2
Replace the existing title page with the new title page.
Remove the existing page 60191 IEC I containing the preface and insert in its place the new page
60191 IEC I containing the preface to Amendment 21 (2020).
Chapter I:
Add the following new sheets:
60191 IEC I-190B-a
60191 IEC I-191B-a
60191 IEC I-190B/191B-b
IEC 60191-2
Edition 1.0 1966
INTERNATIONAL
STANDARD
Mechanical standardization of semiconductor devices –
Part 2: Dimensions
Includes Supplements and Amendments / Inclut les Compléments et Amendements:
A (1967), B (1969), C (1970), D (1971), E (1974), F (1976), G (1978), H (1978),
J (1980), K (1981), L (1982), M (1983), N (1987), P (1988), Q (1990), R (1995),
S (1995), T(1995), U(1997), V(1998), W(1999), X(1999), Y(2000), Z(2000), 1 (2001),
2(2001), 3(2001), 4(2001), 5(2002), 6(2002), 7(2002), 8(2003), 9(2003), 10(2004),
11(2004), 12(2006), 13(2006), 14(2006), 15(2006), 16(2007), 17(2008), 18(2011),
19(2012), 20(2018), 21(2020)
IEC 60191-2:1966
INTERNATIONAL ELECTROTECHNICAL COMMISSION
PUBLICATION 191-2
MECHANICAL STANDARDIZATION OF SEMICONDUCTOR DEVICES –
Part 2: Dimensions
CONTENTS
FOREWORD
PREFACE
PHILOSOPHY OF MECHANICAL STAN-
DARDIZATION .Chapter 00
RECOMMENDED VALUES FOR CERTAIN
DIMENSIONS OF DRAWINGS OF SEMI-
CONDUCTOR DEVICES . Chapter 0
DEVICE OUTLINE DRAWINGS . Chapter I
TYPES OF SEMICONDUCTOR DEVICES
GENERALLY MOUNTED IN THE
PACKAGES OF CHAPTER I
BASE DRAWINGS . Chapter II
CASE OUTLINE DRAWINGS .Chapter III
GAUGE DRAWINGS . Chapter IV
TABLES SHOWING ASSOCIATIONS BE-
TWEEN CASE OUTLINES AND BASES . Chapter V
OBSOLETE DRAWINGS
ADDITIONS TO THE LISTS OF
NATIONAL CODES APPEARING ON
THE STANDARD SHEETS OF
IEC PUBLICATION 191-2
DELETIONS TO THE LISTS OF
NATIONAL CODES APPEARING ON
THE STANDARD SHEETS OF
IEC PUBLICATION 191-2
IEC Publication 191-2
Date: 1987
INTERNATIONAL ELECTROTECHNICAL COMMISSION
_________
Amendment 21 (2020) to IEC 60191-2 (1966)
MECHANICAL STANDARDIZATION OF
SEMICONDUCTOR DEVICES –
Part 2: Dimensions
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 in addition
to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly
Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). 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. 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 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
IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in th
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