Power line chokes
Current-compensated ring core double chokes
250 V AC, 6 … 10 A, 2.8 … 7.8 mH
Series/Type:
Date:
B82725S2*
July 2012
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EPCOS
AG 2012. Reproduction, publication and dissemination of this publication, enclosures
hereto and the information contained therein without EPCOS’ prior express consent is prohibited.
Power line chokes
Current-compensated ring core double chokes
Rated voltage 250 V AC
Rated current 6 ... 10 A
Rated inductance 2.8 ... 7.8 mH
Construction
■
■
■
■
■
■
B82725S2*
Current-compensated ring core double choke
Ferrite core with epoxy coating (UL 94 V-0)
Polycarbonate base plate (UL 94 V-0)
Choke fixed on base plate with tape
Sector winding
Clearance
2.5
mm, creepage distance
3
mm
Features
■
Approx. 1% stray inductance
for symmetrical interference suppression
■
Suitable for wave soldering
■
Design complies with EN 60938-2 (VDE 0565-2)
■
RoHS-compatible
Applications
■
Suppression of common-mode interferences
■
Switch-mode applications
Terminals
■
Ends of winding wires
■
Hot-dip tinned
Marking
■
Manufacturer, ordering code, rated current,
rated voltage, rated inductance,
graphic symbol, date of manufacture (YYWWD.internal ID code)
Delivery mode
■
Cardboard box
Please read
Cautions and warnings
and
Important notes
at the end of this document.
2
07/12
Power line chokes
Current-compensated ring core double chokes
Dimensional drawing and pin configuration
B82725S2*
Tolerances to ISO 2768-C unless otherwise noted.
Dimensions in mm.
Technical data and measuring conditions
Rated voltage V
R
Test voltage V
test
Rated temperature T
R
Rated current I
R
Rated inductance L
R
Inductance tolerance
Inductance decreaseL/L
0
Stray inductance L
stray,typ
DC resistance R
typ
Solderability (lead-free)
250 V AC (50/60 Hz)
1500 V AC / 2100 V DC, 2 s (line/line)
+60
C
Referred to 50 Hz and rated temperature
Measured with Agilent 4284A at 10 kHz, 0.1 mA, +20 °C
Inductance is specified per winding.
30%
at +20 °C
< 10% at DC magnetic bias with I
R
, +20 °C
Measured with Agilent 4284A at 10 kHz, 5 mA, +20 °C,
typical values
Measured at +20 °C, typical values, specified per win-
ding
Sn96.5Ag3.0Cu0.5: +(245
5)
°C, (3
0.3)
s
Wetting of soldering area
95%
(to IEC 60068-2-20, test Ta)
+(260
5)
°C, (10
1)
s
(to IEC 60068-2-20, test Tb)
40/125/56 (to IEC 60068-1)
–25 °C … +40 °C,
75%
RH
Approx. 50 g
3
07/12
Resistance to soldering heat
(wave soldering)
Climatic category
Storage conditions (packaged)
Weight
Please read
Cautions and warnings
and
Important notes
at the end of this document.
Power line chokes
Current-compensated ring core double chokes
Characteristics and ordering codes
I
R
A
6
6
10
10
L
R
mH
7.8
3.9
3.3
2.8
L
stray,typ
H
35
33
35
30
R
typ
m
24
24
13.5
12.5
Wire
d
0.1
mm
1.0
1.0
1.32
1.32
B82725S2*
Ordering code
B82725S2602N041
B82725S2602N002
B82725S2103N004
B82725S2103N003
Impedance |Z| versus frequency f
measured with windings in parallel at +20 °C,
typical values
10
6
Ω
B82725
|Z|
10
5
IND0780-Z
Current derating I
op
/I
R
versus ambient temperature T
A
10
4
10
3
10
2
S2602N041
S2602N002
S2103N004
S2103N003
10
1 4
10
10
5
10
6
Hz 10
7
f
Please read
Cautions and warnings
and
Important notes
at the end of this document.
4
07/12
Cautions and warnings
Current-compensated ring core double chokes
■
Please note the recommendations in our Inductors data book (latest edition) and in the data
sheets.
– Particular attention should be paid to the derating curves given there. Derating must be applied
in case the ambient temperature in the application exceeds the rated temperature of the
component.
– Ensure the operation temperature (which is the sum of the ambient temperature and the
temperature rise caused by losses / self-heating) of the component in the application does not
exceed the maximum value specified in the climatic category.
– The soldering conditions should also be observed. Temperatures quoted in relation to wave
soldering refer to the pin, not the housing.
■
If the components are to be washed varnished it is necessary to check whether the washing
varnish agent that is used has a negative effect on the wire insulation, any plastics that are used,
or on glued joints. In particular, it is possible for washing varnish agent residues to have a
negative effect in the long-term on wire insulation.
Washing processes may damage the product due to the possible static or cyclic mechanical
loads (e.g. ultrasonic cleaning). They may cause cracks to develop on the product and its parts,
which might lead to reduced reliability or lifetime.
■
The following points must be observed if the components are potted in customer applications:
– Many potting materials shrink as they harden. They therefore exert a pressure on the plastic
housing or core. This pressure can have a deleterious effect on electrical properties, and in
extreme cases can damage the core or plastic housing mechanically.
– It is necessary to check whether the potting material used attacks or destroys the wire
insulation, plastics or glue.
– The effect of the potting material can change the high-frequency behaviour of the components.
■
Ferrites are sensitive to direct impact. This can cause the core material to flake, or lead to
breakage of the core.
■
Even for customer-specific products, conclusive validation of the component in the circuit can
only be carried out by the customer.
Please read
Cautions and warnings
and
Important notes
at the end of this document.
5
07/12
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