Power line chokes
Current-compensated D core double chokes
250 V AC, 0.35 … 1.8 A, 3.3 … 100 mH, +40 °C
Series/Type:
Date:
B82731M/H
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 D core double chokes
Rated voltage 250 V AC
Rated current 0.35 ... 1.8 A
Rated inductance 3.3 ... 100 mH
Construction
■
■
■
■
■
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B82731M/H
Current-compensated double choke
Closed rectangular ferrite core
Closed polycarbonate coil former (UL 94 V-0)
Without encapsulation
2-section winding
Clearance and creepage distances
3 mm
B82731M
Features
■
High resonance frequency due to 2-section winding
■
Approx. 1% stray inductance for symmetrical
interference suppression
■
Low leakage due to closed core shape
■
High pulse strength
■
Low whirring noise
■
Suitable for wave soldering
■
Design complies with EN 60938-2 (VDE 0565-2) and UL 1283
■
UL
1)
and ENEC (VDE) approvals
■
Recyclable owing to omission of encapsulation and glue
■
RoHS-compatible
Applications
■
Suppression of common-mode interferences
■
Compact switch-mode power applications
■
Electronic ballasts in lamps
B82731H
Terminals
■
Base material CuNi18Zn20
■
Layer composition Ni, Sn
■
Hot-dipped
■
Pins 0.6
0.6 (mm)
■
Lead spacing 10
12.5 (mm)
Marking
■
B82731M: Manufacturer, rated inductance, rated current,
ordering code, approval symbols, date of manufacture (WWYY)
■
B82731H: Manufacturer, ordering code
Delivery mode
Blister tray in cardboard box
1) UL approval with 300 V AC.
Please read
Cautions and warnings
and
Important notes
at the end of this document.
2
07/12
Power line chokes
Current-compensated D core double chokes
Dimensional drawings and pin configurations
Vertical version (B82731M)
1
2
1
2
B82731M/H
Horizontal version (B82731H)
1
2
1
2
10±0.2
4
12.5±0.2
21 max.
3
4
3
4
12.5±0.2
21 max.
3
10±0.2
4
3
7.5 max. 12.5 max.
15 max.
90
15.5 max.
4.8 max.
˚
±5
˚
20+0.5
4.5 min.
0.6
3+0.5
0.6
IND0285-5
IND0284-2
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, 2 s (line/line)
+40
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/+50% at +20 °C
< 10% at DC magnetic bias with I
R
, +20 °C
Measured with Agilent 4284A at 10 kHz, 5 mA, +20
C,
typ. values
Measured at +20 °C, typical values, specified per winding
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)
Approx. 8 g
EN 60938-2, UL 1283
3
07/12
Resistance to soldering heat
(wave soldering)
Climatic category
Weight
Approvals
Storage conditions (packaged) –25 °C … +40 °C,
75%
RH
Please read
Cautions and warnings
and
Important notes
at the end of this document.
3+0.5
Power line chokes
Current-compensated D core double chokes
Characteristics and ordering codes
I
R
A
0.35
0.4
0.5
0.6
0.7
0.8
0.9
1.1
1.3
1.8
L
R
mH
100
68
47
39
27
22
15
10
6.8
3.3
L
stray,typ
H
1000
700
470
390
270
220
150
100
70
35
R
typ
m
4500
3000
2000
1500
1000
800
600
400
280
140
Ordering code
Vertical version
Horizontal version
B82731M/H
Approvals
B82731M2351A030 B82731H2351A030
B82731M2401A033 B82731H2401A033
B82731M2501A030 B82731H2501A030
B82731M2601A030 B82731H2601A030
B82731M2701A030 B82731H2701A030
B82731M2801A030 B82731H2801A030
B82731M2901A030 B82731H2901A030
B82731M2112A030 B82731H2112A030
B82731M2132A030 B82731H2132A030
B82731M2182A030 B82731H2182A030
= approval granted
Sample kit available. Ordering code: B82731X001
For more information refer to chapter “Sample kits”.
Impedance |Z| versus frequency f
measured with windings in parallel at +20 °C,
typical values
10
6
IND0290-9-E
Current derating I
op
/I
R
versus ambient temperature T
A
Ω
|Z |
10
5
B82731M/H
10
4
2351A030
2401A033
2501A030
2601A030
2701A030
2801A030
2901A030
2112A030
2132A030
2182A030
10
5
10
6
Hz 10
7
f
10
3
10
2
10
1 4
10
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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