Power line chokes
Current-compensated ring core double chokes
250 V AC, 1.4 … 7.8 mH, 6 … 13 A, +60 °C / +70 °C
Series/Type:
Date:
B82725S2*
March 2017
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EPCOS AG 2017. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS’ prior express consent is prohibited.
EPCOS AG is a TDK Group Company.
Power line chokes
Current-compensated ring core double chokes
Rated voltage 250 V AC
Rated inductance 1.4 ... 7.8 mH
Rated current 6 ... 13 A, +60 °C, +70 °C
Construction
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B82725S2*
Current-compensated ring core double choke
Ferrite core with epoxy coating (UL 94 V-0)
Plastic base plate (UL 94 V-0)
Plastic spacer (UL 94 V-0, CTI 600)
Coil fixed on base plate with tape
Sector winding
Clearance 2.5 mm, creepage distance 3 mm
Features
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High resonance frequency
Approx. 0.5 ... 1% stray inductance for symmetrical interference suppression
Suitable for wave soldering
Design complies with EN 60938-2 (VDE 0565-2) and UL 1283
B82725S2133N040: UL 1446 class 155(F) electrical insulation system
RoHS-compatible
Applications
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Suppression of common-mode interferences
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Switch-mode power applications
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Frequency converters
Terminals
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Ends of winding wires
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Hot-dip tinned
Marking
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Product brand, electrical insulation system designation
(only B82725S2133N040), ordering code, graphic symbol,
rated current, rated voltage, rated inductance,
date of manufacture (YYWWD.internal ID code),
production place identification code
Delivery mode
■
Blister tray in cardboard box
Please read
Cautions and warnings
and
Important notes
at the end of this document.
2
03/17
Power line chokes
Current-compensated ring core double chokes
Dimensional drawing and pin configuration
B82725S2*
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 decrease L/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 / +70 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 winding
Sn96.5Ag3.0Cu0.5: +(245 3) °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,
Approx. 52 g
UL 1446 class 155(F) "T-EIS-CF1" (E320370)
(only B82725S2133N040)
75% RH
Resistance to soldering heat
(wave soldering)
Climatic category
Storage conditions (packaged)
Weight
Approvals
Please read
Cautions and warnings
and
Important notes
at the end of this document.
3
03/17
Power line chokes
Current-compensated ring core double chokes
Characteristics and ordering codes
I
R
A
6
6
10
10
13
L
R
mH
7.8
3.9
3.3
2.8
1.4
L
stray,typ
H
35
33
35
30
9.6
R
typ
m
24
24
13.5
12.5
5.3
T
R
°C
+60
+60
+60
+60
+70
Wire
d +0.1
mm
1.0
1.0
1.32
1.32
1.5
Ordering code
B82725S2*
B82725S2602N041
B82725S2602N002
B82725S2103N004
B82725S2103N003
B82725S2133N040
Impedance |Z| versus frequency f
measured with windings in parallel at +20 °C,
typical values
Current derating I
op
/I
R
versus ambient temperature T
A
Please read
Cautions and warnings
and
Important notes
at the end of this document.
4
03/17
Cautions and warnings
■
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.
– 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.
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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.
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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.
Display of ordering codes for EPCOS products
The ordering code for one and the same product can be represented differently in data sheets,
data books, other publications and the website of EPCOS, or in order-related documents such as
shipping notes, order confirmations and product labels.
The varying representations of the
ordering codes are due to different processes employed and do not affect the
specifications of the respective products.
Detailed information can be found on the Internet
under www.epcos.com/orderingcodes.
Please read
Cautions and warnings
and
Important notes
at the end of this document.
5
03/17
