IEC 60749-32:2002

IEC 60749-32 ®
Edition 1.1 2010-11
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Semiconductor devices – Mechanical and climatic test methods –
Part 32: Flammability of plastic-encapsulated devices (externally induced)

Dispositifs à semiconducteurs – Méthodes d'essais mécaniques et climatiques –
Partie 32: Inflammabilité des dispositifs à encapsulation plastique (cas d'une
cause extérieure d'inflammation)

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IEC 60749-32 ®
Edition 1.1 2010-11
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Semiconductor devices – Mechanical and climatic test methods –

Part 32: Flammability of plastic-encapsulated devices (externally induced)

Dispositifs à semiconducteurs – Méthodes d'essais mécaniques et climatiques –

Partie 32: Inflammabilité des dispositifs à encapsulation plastique (cas d'une

cause extérieure d'inflammation)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 31.080.01 ISBN 978-2-8891-2234-9

– 2 – 60749-32 © IEC:2002+A1:2010
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SEMICONDUCTOR DEVICES –
MECHANICAL AND CLIMATIC TEST METHODS –
Part 32: Flammability of plastic-encapsulated devices
(externally induced)
FOREWORD
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This consolidated version of the official IEC Standard and its amendment has been
prepared for user convenience.
IEC 60749-32 edition 1.1 contains the first edition (2002) [documents 47/1394/FDIS and
47/1402/RVD], its amendment 1 (2010) [documents 47/2018/CDV and 47/2061/RVC] and
its corrigendum of August 2003.
A vertical line in the margin shows where the base publication has been modified by
amendment 1. Additions and deletions are displayed in red, with deletions being struck
through.
60749-32 © IEC:2002+A1:2010 – 3 –
International Standard IEC 60749-32 has been prepared by IEC technical committee 47:
Semiconductor devices.
The text of this test method is reproduced from IEC 60749 Ed.2, chapter 4, clause 1.2 without
change. It has therefore not been submitted to vote a second time.
Each test method governed by IEC 60749-1 and which is part of the series is a stand-alone
document, numbered IEC 60749-2, IEC 60749-3, etc. The numbering of these test methods is
sequential, and there is no relationship between the number and the test method (i.e. no
grouping of test methods). The list of these tests will be available in the IEC Internet site and
in the catalogue.
Updating of any of the individual test methods is independent of any other part.
The committee has decided that the contents of the base publication and its amendments will
remain unchanged until the stability date indicated on the IEC web site under
"http://webstore.iec.ch" in the data related to the specific publication. At this date, the publication 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 publication using a colour printer.

– 4 – 60749-32 © IEC:2002+A1:2010
INTRODUCTION
Activity within IEC technical committee 47, working group 2, includes the generation,
coordination and review of climatic, electrical (of which only ESD, latch-up and electrical
conditions for life tests are considered), mechanical test methods, and associated inspection
techniques needed to assess the quality and reliability of the design and manufacture of
semiconductor products and processes.

60749-32 © IEC:2002+A1:2010 – 5 –
SEMICONDUCTOR DEVICES –
MECHANICAL AND CLIMATIC TEST METHODS –

Part 32: Flammability of plastic-encapsulated devices
(externally induced)
1 Scope and object
This part of IEC 60749 is applicable to semiconductor devices (discrete devices and
integrated circuits).
The object of this test is to determine whether the device ignites due to external heating. The
test uses a needle flame, simulating the effect of small flames which may result from fault
conditions within equipment containing the device.
NOTE This test is identical to the test method contained in 1.2 of chapter 4 of IEC 60749 (1996), apart from the
addition of this clause, the addition of titles to clauses 2 and 3 and renumbering.
2 Normative references
The following referenced documents are indispensable for the application 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 60695-2-2:1995, Fire hazard testing – Part 2: Test methods – Section 2: Needle-flame test
IEC 60695-11-5:2004, Fire hazard testing – Part 11-5: Test flames – Needle-flame test
method – Apparatus, confirmatory test arrangement and guidance
3 Test procedure
This test shall be in accordance with the needle-flame test, with the following specific
requirements:
a) preconditioning: none;
b) number of test specimens: three, unless otherwise stated in the detail specification;
c) position of the specimen: as per according to Figure 1b of IEC 60695-2-2 60695-11-5:2004;
d) surface to be tested and point of application: as per according to Figure 1b of IEC 60695-2-2
60695-11-5:2004;
e) underlying layer: paper on pinewood, according to clause 4 of IEC 60695-2-2 5.4 of
IEC 60695-11-5:2004’;
f) duration of application of the flame (t ): 10 s;
a
g) duration of burning: 10 s;
h) extent
...