Fixed inductors for electromagnetic interference suppression - Part 2-1: Blank detail specification - Inductors for which safety tests are required - Assessment level D

IEC 60938-2-1:1999 is a supplementary document to the sectional specification and contains requirements for style, layout and minimum content of detail specifications. Detail specifications not complying with these requirements may not be considered as being in accordance with IEC specifications nor shall they so be described. In the preparation of detail specifications the content of 1.4 of the sectional specification shall be taken into account.

Inductances fixes d'antiparasitage - Partie 2-1: Spécification particulière cadre - Inductances nécessitant des essais de sécurité - Niveau d'évaluation D

L'IEC 60938-2-1:1999 est un document annexe à la spécification intermédiaire qui contient des exigences pour le modèle, la disposition et le contenu minimal des spécifications particulières. Les spécifications particulières qui ne satisfont pas aux exigences peuvent ne pas être considérées comme conformes aux spécifications de la CEI et ne doivent pas être décrites comme telles. Dans la préparation des spécifications particulières, le contenu de 1.4 de la spécification intermédiaire doit être pris en compte.

General Information

Status
Published
Publication Date
28-Oct-1999
Current Stage
PPUB - Publication issued
Start Date
29-Oct-1999
Completion Date
29-Oct-1999
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IEC 60938-2-1
Edition 1.0 1999-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fixed inductors for electromagnetic interference suppression –
Part 2-1: Blank detail specification – Inductors for which safety tests are
required – Assessment level D
Inductances fixes d’antiparasitage –

Partie 2-1: Spécification particulière cadre – Inductances nécessitant des essais

de sécurité – Niveau d'évaluation D
IEC 60938-2-1:1999-10(EN-FR)
---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
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---------------------- Page: 2 ----------------------
IEC 60938-2-1
Edition 1.0 1999-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Fixed inductors for electromagnetic interference suppression –
Part 2-1: Blank detail specification – Inductors for which safety tests are
required – Assessment level D
Inductances fixes d’antiparasitage –

Partie 2-1: Spécification particulière cadre – Inductances nécessitant des essais

de sécurité – Niveau d'évaluation D
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX L
ICS 29.100.10; 31.020 ISBN 978-2-8322-1335-3

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 – 60938-2-1 © IEC:1999
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIXED INDUCTORS FOR ELECTROMAGNETIC
INTERFERENCE SUPPRESSION –
Part 2-1: Blank detail specification –
Inductors for which safety tests are required –
Assessment level D
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 60938-2-1 has been prepared by IEC technical committee 40:

Capacitors and resistors for electronic equipment.

This bilingual version (2014-01) corresponds to the monolingual English version, published in

1999-10.
The text of this standard is based on the following documents:
FDIS Report on voting
40/1112/FDIS 40/1138/RVD

Full information on the voting for the approval of this 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.
---------------------- Page: 4 ----------------------
60938-2-1 © IEC:1999 – 3 –

This publication has been drafted in accordance with the ISO/IEC Directives, Part 3.

The committee has decided that this publication remains valid until 2005.

At this date, in accordance with the committee’s decision, the publication will be

• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
---------------------- Page: 5 ----------------------
– 4 – 60938-2-1 © IEC:1999
FIXED INDUCTORS FOR ELECTROMAGNETIC
INTERFERENCE SUPPRESSION –
Part 2-1: Blank detail specification –
Inductors for which safety tests are required –
Assessment level D
INTRODUCTION
Blank detail specification

A blank detail specification is a supplementary document to the sectional specification and

contains requirements for style, layout and minimum content of detail specifications. Detail

specifications not complying with these requirements may not be considered as being in

accordance with IEC specifications nor shall they so be described.

In the preparation of detail specifications the content of 1.4 of the sectional specification shall

be taken into account.

The numbers between square brackets on the first page of the detail specification correspond

to the following information which shall be inserted in the position indicated.
Identification of the detail specification

[1] The "International Electrotechnical Commission" or the National Standards Organization

under whose authority the detail specification is drafted.

[2] The IEC or National Standards number of the detail specification, date of issue and any

further information required by the national system.
[3] The number and issue number of the IEC or national generic specification.
[4] The IEC number of the blank detail specification.
Identification of the inductor
[5] A short description of the type of inductor.
[6] Information on typical construction (when applicable).

[7] Outline drawing with main dimensions which are of importance for interchangeability

and/or reference to the national or international documents for outlines. Alternatively, this

drawing may be given in an annex to the detail specification.
[8] Application or group of applications covered and/or assessment level.

[9] Reference data on the most important properties, to allow comparison between the

various inductor types.
---------------------- Page: 6 ----------------------
60938-2-1 © IEC:1999 – 5 –
[1] IEC 60938-2-1XX [2]
QC XXXXXXXXXXXX
ELECTRONIC COMPONENTS OF ASSESSED IEC 60938-2-1 [4]
QUALITY IN ACCORDANCE WITH: QC XXXXXX
[3] FIXED INDUCTORS FOR
ELECTROMAGNETIC INTERFERENCE
SUPPRESSION FOR WHICH SAFETY [5]
Outline drawing: (see table 1) TESTS ARE REQUIRED
(... angle projection)
[7] [6]
(Other shapes are permitted within the dimensions
given)
Assessment level: D [8]
NOTES [1] to [9] see page 3.
[9]
Information on the availability of components qualified
to this detail specification is given in the Register of
Approvals.
1 General data
1.1 Recommended method(s) of mounting (to be inserted)
(See 1.4.3 of IEC 60938-2.)
1.2 Dimensions
Table 1 – Dimensions related to case size
Case size Dimensions
reference or type
L W H

NOTE 1 When there is no case size reference, the dimensions should be given per type designation.

NOTE 2 The dimensions should be given as maximum dimensions or as nominal dimensions with a tolerance.

---------------------- Page: 7 ----------------------
– 6 – 60938-2-1 © IEC:1999
1.3 Ratings and characteristics
Inductance range (see table 2)
Tolerance on rated inductance
Rated current (I) range (see table 2)
DC resistance (R) (see table 2)
Rated voltage
Rated temperature
Climatic category
Category of passive flammability
Table 2 – Type designation related to values of inductance, rated current
and d.c. resistance
Type designation L I R
R R max
related to values of
per line per line
inductance, rated
current and d.c.
A Ω
resistance
1.4 Related documents

Generic specification: IEC 60938-1:(1999), Fixed inductors for electromagnetic interference

suppression – Part 1: Generic specification

Sectional specification: IEC 60938-2:(1999), Fixed inductors for electromagnetic interference

suppression – Part 2: Sectional specification
1.5 Marking

The marking of the inductor and the package shall be in accordance with the requirements

of 1.6 of IEC 60938-2.

The details of the marking of the component and packaging shall be given in full in the detail

specification.
1.6 Ordering information

Orders for inductors covered by this specification shall contain, in clear or in coded form, the

following minimum information:
a) type designation;
b) rated inductance;
c) tolerance on rated inductance;
d) rated voltage;
e) rated current;
f) number and issue reference of the detail specification and style reference.
1.7 Certified records of released lots
Required/non required.
---------------------- Page: 8 ----------------------
60938-2-1 © IEC:1999 – 7 –
1.8 Additional information (not for inspection purposes)

1.9 Additional or increased severities or requirements to those specified in the generic

or sectional specification

NOTE Additions or increased requirements should be specified only when essential.

Table 3 – Other characteristics
This table is to be used for defining characteristics
which are additional to or more severe than those
given in the sectional specification.
2 Inspection requirements
2.1 Procedures

2.1.1 For qualification approval, the procedure shall be in accordance with 3.4 of

IEC 60938-2.

2.1.2 For quality conformance inspection, the test schedule (table 4) includes sampling,

periodicity, severities and requirements. The formation of inspection lots is covered by 3.5.1 of

the sectional specification.
Table 4 – Test schedule for quality conformance inspection
Subclause number and D Conditions of test IL A Performance requirements
test
or (see note 1) Q (see note 1)
(see note 1)
ND L
(see (see
note 3) note 2)
GROUP A INSPECTION
(lot-by-lot)
Subgroup A1 ND S-4 2,5 % As in 4.1
4.1 Visual examination Legible marking and as
specified in 1.5 of this
specification
4.1 Marking
4.1 Dimensions (gauging) See table 1 of this
specification
Subgroup A2 ND II 1,0 %
4.5 DC line resistance See 1.3 of this specification
4.4 Inductance
4.2 Voltage proof Within specified tolerance
4.3 Insulation resistance See table 2 of this
(test A only) specification
GROUP B INSPECTION
(lot-by-lot)
Subgroup B1 D S-3 2,5 %
Method: ...
4.8 Solderability
Specify ageing if none
other than 16 h 155 °C
dry heat
Visual examination Good tinning as evidenced by
4.8.2 Final measurements
free flowing of the solder with
wetting of the terminations, or
solder shall flow within 3 s, as
applicable
---------------------- Page: 9 ----------------------
– 8 – 60938-2-1 © IEC:1999
Subclause number and D Conditions of test Sample size and Performance
test or acceptance criterion requirements
(see note 1) (see note 1) (see note 3) (see note 1)
(see
note 3)
p n c
(see
note 4)
GROUP C INSPECTION
(periodic)
D 6 5/3/1/1 0/0/0/0
Subgroup C1A
Table 1 of this specification
4.1.2 Dimensions
(detail)
For method and severity Table 1 of this specification
4.1.2 Creepage distances
and 4.1.2
and clearances see detail specification
For method and severity: No visible damage
4.6 Robustness of
see detail specification
terminations
4.7 Resistance to See detail specification
for the method (1A or
soldering heat
1B)
(if applicable)
For method 1A:
Immersion time: 10 s,
unless otherwise
specified in the detail
specification
4.20 Component sol-
vent resistance
(if applicable)
Visual examination No visible damage
4.7.2 Final measurements
DC line resistance See 1.3 of this specification
Subgroup C1B D 6 9/6/4/1 0/0/0/0
4.21 Solvent resistance Legible marking
of the marking
(if applicable)
4.9 Rapid change of θ = Lower category
temperature temperature
θ = Upper category
temperature
Five cycles
Duration t = ... h,
see 4.9.1
No visible damage
Visual examination
4.10 Vibration
For mounting method,
see detail specification
Frequency range:
from ... Hz to ... Hz
Total number of sweep
cycles: ...
4.10.2 Intermediate No visible damage
Visual examination
inspection
4.11 Bump (or shock,
For mounting method,
see 4.12)
see detail specification
Number of bumps: ...
Acceleration: ... m/s
Duration of pulse: ... ms
No visible damage
Visual examination
---------------------- Page: 10 ----------------------
60938-2-1 © IEC:1999 – 9 –
Subclause number and D Conditions of test Sample size and Performance
test or acceptance criterion requirements
(see note 1) (see note 1) (see note 3) (see note 1)
(see
note 3)
p n c
(see
note 4)
4.12 Shock (or bump, For mounting method,
see 4.11) see detail specification
Acceleration: ... m/s
Duration of pulse: ... ms
4.11.2 Final measurements Visual examination No visible damage
4.12.3 DC line resistance See 1.3 of this specification
Subgroup C1 D 4 14/9/4/2 1/1/0/0
4.4 Inductance For reference
4.13 Container sealing Test Qc or Qd as No leakage
(if required in the prescribed in the detail
detail specification) specification
4.14 Climatic sequence
4.14.2 Dry heat Temperature: upper
category temperature
Duration: 16 h
4.14.3 Damp heat, cyclic,
test Db, first cycle
4.14.4 Cold Temperature: lower
category temperature
Duration: 2 h
4.14.5 Low air pressure Air pressure 8,0 kPa
(if required in the unless otherwise stated
detail specification) in the detail specification
Duration: 1 h
Visual examination No permanent breakdown,
flashover, harmful defor-
mation of the case
4.14.6 Damp heat, cyclic,
test Db, remaining
cycles
Recovery: 1 h to 26 h
4.14.7 Final measurements Visual examination No visible damage
Legible marking
DC line resistance See 1.3 of this specification
Inductance Within –5 %/+10 % of value
measured in group 0
Voltage proof No breakdown or flashover
Voltage: 66 % of voltage
applied in group 0
Insulation resistance ≥50 % of values in 4.3
Subgroup C2 D 12 8/5/4/2 0/0/0/0
4.4 Inductance For reference
4.15 Damp heat, steady Recovery: 1 h to 26 h
state
---------------------- Page: 11 ----------------------
– 10 – 60938-2-1 © IEC:1999
Subclause number and D Conditions of test Sample size and Performance
test or acceptance criterion requirements
(see note 1) (see note 1) (see note 3) (see note 1)
(see
note 3)
p n c
(see
note 4)
4.15.1 Final measurements Visual examination No visible damage
Legible marking
DC line resistance See 1.3 of this specification
Inductance Within –5 %/+10 % of value
measured in group 0
No breakdown or flashover
Voltage proof
Voltage: 66 % of voltage
applied in group 0
A polarizing voltage shall
be applied if specified in
the detail specification
≥50 % of values as
Insulation resistance
measured in 4.3
Subgroup C3A D 3 8/4/2/1 0/0/0/0
4.16 Temperature rise Duration: until thermal
(inductors with equilibrium ha
...

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