IEC 60938-2:1999/AMD1:2006

IEC 60938-2
Edition 2.0 2006-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
AMENDMENT 1
AMENDEMENT 1
QC 280100
Fixed inductors for electromagnetic interference suppression –
Part 2: Sectional specification

Inductances fixes d'antiparasitage –
Partie 2: Spécification intermédiaire

IEC 60938-2:1999/A1:2006
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IEC 60938-2
Edition 2.0 2006-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
AMENDMENT 1
AMENDEMENT 1
QC 280100
Fixed inductors for electromagnetic interference suppression –
Part 2: Sectional specification

Inductances fixes d'antiparasitage –
Partie 2: Spécification intermédiaire

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
M
CODE PRIX
ICS 029.100.10; 31.020 ISBN 2-8318-9857-9
– 2 – 60938-2 Amend. 1 © IEC:2006
FOREWORD
This amendment has been prepared by IEC technical committee 40: Capacitors and resistors
for electronic equipment.
This bilingual version, published in 2008-08, corresponds to the English version.
The text of this amendment is based on the following documents:
CDV Report on voting
40/1603/CDV 40/1700A/RVC
Full information on the voting for the approval of this amendment can be found in the report
on voting indicated in the above table.
The French version of this amendment has not been voted upon.
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result 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• withdrawn;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.
_____________
Page 5
1.3 Normative references
Add, to the list of references, the following new reference:
IEC 60384-14, Fixed capacitors for use in electronic equipment – Part 14: Sectional
specification: Fixed capacitors for electromagnetic interference suppression and connection to
the supply mains
CISPR 16-1-1:2003, Specification for radio disturbance and immunity measuring apparatus
and methods – Part 1-1: Radio disturbance and immunity measuring apparatus – Measuring
)
apparatus
CISPR 16-1-2:2003, Specification for radio disturbance and immunity measuring apparatus
and methods – Part 1-2: Radio disturbance and immunity measuring apparatus – Ancillary
equipment – Conducted disturbances

Page 14
4.2 Voltage proof
Replace the existing Table 3 by the following new Table 3:
___________
)
A new edition of this publication exists.

60938-2 Amend. 1 © IEC:2006 – 3 –
Table 3 – Measuring points
Inductors for Test A between terminations* Test B – Internal insulation)
Test C – External insulation
Test D** – Between windings
and core
Alternating 4,3 U (d.c.) 2 U + 1 500 V (a.c.) with a
R R
current minimum of 2 000 V (a.c.)
Direct current 3 U (d.c.) 2 U + 1 500 V (d.c.)
R R
* Applies only to inductors with more than one winding.
** Test not required for insulated or non-insulated and self-supporting mountable
inductors.
Page 22
Replace the existing Annex A by the following new Annex A:
Annex A
(normative)
Test schedule for safety tests only approval

Subclause number D Conditions of test Number of Performance
and test or specimens (n) requirements
ND and number of
(see Note 1) (see Note 1)
(see Note 1) (see non-conforming
Note 2) items (c)
Group 0 ND See Tables 1
or 2
4.1.1 Dimensions  See detail specification
(gauging)
4.1 Visual No visible damage
examination Legible marking
4.5 DC line See detail specification
resistance
4.4 Inductance Within specified tolerance

4.2 Voltage proof See Table 3 No breakdown or flashover
See detail specification for
the method
Foil method duration: 1 min
4.3 Insulation See detail specification for As in 4.3
resistance the method
– 4 – 60938-2 Amend. 1 © IEC:2006

Subclause number D Conditions of test Number of Performance
and test or specimens (n) requirements
ND and number of
(see Note 1) (see Note 1)
(see Note 1) (see non-conforming
Note 2) items (c)
Group 1A D See Tables 1
or 2
4.1.2 Dimensions  See detail specification and
(detail) 4.1.2
Creepage For method and severity:
distances and see detail specification
clearances
4.6 Robustness of See detail specification for No visible damage
terminations the method (1A or 1B)

4.7 Resistance to For method 1A:
soldering heat Immersion time: 10 s,
(if applicable) unless otherwise specified
in the detail specification
4.20 Component
solvent
resistance
(if applicable)
As in group 0
4.7.2 Final DC line resistance

measurements
No breakdown or flashover
Voltage proof at 66 % of
value in Table 3
No visible damage
Visual examination
Group 2 D See Tables 1
or 2
4.15 Damp heat, Recovery: 1 h to 26 h
steady state
No visible damage
4.15.1 Final Visual examination
Legible marking
measurement
As in group 0
DC line resistance
Inductance See Tables Within ± 30 % of value
1 or 2 measured in group 0
Voltage proof No breakdown or flashover
Voltage: 66 % of voltage
applied in group 0
A polarizing voltage shall
be applied if specified in
the detail specification
Insulation resistance
≥ 50 % of value in 4.3
60938-2 Amend. 1 © IEC:2006 – 5 –

Subclause number D Conditions of test Number of Performance
and test or specimens (n) requirements
ND and number of
(see Note 1) (see Note 1)
(see Note 1) (see non-conforming
Note 2) items (c)
Group 3A D See Tables 1
or 2
4.16 Temperature Duration: until thermal
rise (inductors equilibrium has been
with mass reached
> 5 g only)
Current: rated current
4.16.1 Test
conditions
Ambient temperature: rated
temperature
4.16.2 Final
measurements
4.18.1 Endurance, Internal temperature As in 4.16.2

current
Duration: 1 000 h
(inductors with
Current: 1,1 × rated current
mass ≤ 5 g
only)
Recovery: 1 h to 26 h
Group 3B D See Tables
(inductors 1 or 2
with more
than one
winding only)
4.17 Impulse 3 impulses, full wave No breakdown or flashover
voltage Crest voltage: see 4.17.1

4.18.2 Endurance, Duration: 1 000 h
voltage Voltage and temperature,
between line see 4.18.2
terminations
Group 3  See Tables
1 or 2
4.18.3 Final Recovery: 1 h to 26 h
measurements
Visual examination No visible damage
Legible marking
DC line resistance As for group 0

Voltage proof No breakdown or flashover
Voltage: 66 % of voltage
applied in group 0
Insulation resistance
≥ 50 % of values in 4.3
Group 4 D See Tables
1 or 2
4.19 Passive   As in 4.19
flammability (if
required in the
detail specifi-
cation)
NOTE 1 Subclause numbers of test and performance requirements refer to Clause 4 .
NOTE 2 In this table, D = destructive, ND = non-destructive.

– 6 – 60938-2 Amend. 1 © IEC:2006
Page 25
Replace the existing Annex B by the following new Annex B:
Annex B
(normative)
Test schedule for safety tests and performance
tests for qualification approval, assessment level D

Subclause number D Conditions of test Number of Performance
and test or specimens (n) requirements
ND and number of
(see Note 1) (see Note 1)
(see Note 1) (see non-conforming
Note 2) items (c)
Group 0 ND See Tables 1
or 2
4.1.1 Dimensions  See detail specification
(gauging)
4.1 Visual No visible damage
examination Legible marking
4.5 DC line See detail specification
resistance
4.4 Inductance Within specified tolerance

4.2 Voltage proof See Table 3 No breakdown or flashover
See detail specification for
the method
Foil method duration: 1 min
4.3 Insulation See detail specification for As in 4.3
resistance the method
Group 1A D See Tables 1
or 2
4.1.2 Dimensions See detail specification and
(detail) 4.1.2
No visible damage
4.6 Robustness of For method and severity:

terminations see detail specification

4.7 Resistance to See detail specification for

soldering heat the method (1A or 1B)

(if applicable) For method 1A:

Immersion time: 10 s,
unless otherwise specified
in the detail specification
4.20 Component
solvent
resistance
(if applicable)
No visible damage
4.7.2 Final Visual examination
measurements
DC line resistance As in group 0

60938-2 Amend. 1 © IEC:2006 – 7 –

Subclause number D Conditions of test Number of Performance
and test or specimens (n) requirements
ND and number of
(see Note 1) (see Note 1)
(see Note 1) (see non-conforming
Note 2) items (c)
Group 1B  See Tables 1
or 2
4.8 Solderability See detail specification for Good tinning as evidenced
(if applicable) the method by free flowing of the solder
with wetting of the
terminations, or solder shall
flow within 3 s, as
applicable
4.21 Solvent resis-
tance of the
marking (if
applicable)
4.9 Rapid change θ = Lower category
A
of temperature temperature
θ = Upper category
B
temperature
Five cycles
Duration t =. h, see 4.9.1
Visual examination No visible damage

4.10 Vibration For mounting method see
detail specification
Frequency range:
from. Hz to. Hz
Total number of sweep
cycles:.
Visual examination No visible damage

4.10.2 Final
inspection
4.11 Bump, (or For mounting method see
shock, see detail specification
4.12) Number of bumps:.
Acceleration:. m/s
Duration of pulse:. ms
Visual examination No visible damage

4.12 Shock, (or For mounting method see
bump, see detail specification
4.11) Acceleration:. m/s
Duration of pulse:. ms
4.11.2 Fina
...