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¤EPCOS AG 2016. 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 D core double chokes
250 V AC, 3.3 … 100 mH, 0.35 … 1.8 A, +40 °C
Series/Type: B82731M/H
Date: December 2016
212/16
Please read Cautions and warnings and
Important notes at the end of this document.
Rated voltage 250 V AC
Rated inductance 3.3 ... 100 mH
Rated current 0.35 ... 1.8 A / +40 °C
Construction
■Current-compensated double choke
■Closed rectangular ferrite core
■Closed plastic coil former (UL 94 V-0)1)
■Without encapsulation
■2-section winding
■Clearance and creepage distances t 3 mm
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
■UL2) 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
Terminals
■Base material CuNi18Zn20
■Layer composition Ni, Sn
■Hot-dipped
■Pins 0.6 u 0.6 (mm)
■Lead spacing 10 u 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) Additionally certified values:
Glow wire flammability index (GWFI to IEC 60695-2-12): +850 °C
Glow wire ignition temperature (GWIT to IEC 60695-2-13): +775 °C
Glow wire test (GWT to IEC 60695-2-11): +750 °C, 2 s / 850 °C, 30 s
Comparative tracking index (CTI to IEC 60112): 175 V
Ball pressure test (BP to IEC 60695-10-2): +125 °C
2) UL approval with 300 V AC.
B82731M
B82731H
B82731M/HPower line chokes
Current-compensated D core double chokes
312/16
Please read Cautions and warnings and
Important notes at the end of this document.
Dimensional drawings and pin configurations
Vertical version (B82731M) Horizontal version (B82731H)
B82731M/HPower line chokes
Current-compensated D core double chokes
412/16
Please read Cautions and warnings and
Important notes at the end of this document.
Technical data and measuring conditions
Characteristics and ordering codes
u = approval granted
Sample kit available. Ordering code: B82731X001
For more information refer to chapter “Sample kits”.
Rated voltage VR250 V AC (50/60 Hz)
Test voltage Vtest 1500 V AC, 2 s (line/line)
Rated temperature TR+40 qC
Rated current IRReferred to 50 Hz and rated temperature
Rated inductance LRMeasured with Agilent 4284A at 10 kHz, 0.1 mA, +20 °C.
Inductance is specified per winding.
Inductance tolerance –30/+50% at +20 °C
Inductance decrease'L/L0< 10% at DC magnetic bias with IR, +20 °C
Stray inductance Lstray,typ Measured with Agilent 4284A at 10 kHz, 5 mA, +20 qC, typ. values
DC resistance Rtyp Measured at +20 °C, typical values, specified per winding
Solderability (lead-free) Sn96.5Ag3.0Cu0.5: +(245 r3) °C, (3 r0.3) s
Wetting of soldering area t95%
(to IEC 60068-2-20, test Ta)
Resistance to soldering heat
(wave soldering)
+(260 r5) °C, (10 r1) s
(to IEC 60068-2-20, test Tb)
Climatic category 40/125/56 (to IEC 60068-1)
Storage conditions (packaged) –25 °C … +40 °C, d75% RH
Weight Approx. 8 g
Approvals IEC EN 60938-2, UL 1283 (E70122)
IR
A
LR
mH
Lstray,typ
PH
Rtyp
m:
Ordering code Approvals
Vertical version Horizontal version
0.35 100 1000 4500 B82731M2351A030 B82731H2351A030 uu
0.4 68 700 3000 B82731M2401A033 B82731H2401A033 uu
0.5 47 470 2000 B82731M2501A030 B82731H2501A030 uu
0.6 39 390 1500 B82731M2601A030 B82731H2601A030 uu
0.7 27 270 1000 B82731M2701A030 B82731H2701A030 uu
0.8 22 220 800 B82731M2801A030 B82731H2801A030 uu
0.9 15 150 600 B82731M2901A030 B82731H2901A030 uu
1.1 10 100 400 B82731M2112A030 B82731H2112A030 uu
1.3 6.8 70 280 B82731M2132A030 B82731H2132A030 uu
1.8 3.3 35 140 B82731M2182A030 B82731H2182A030 uu
B82731M/HPower line chokes
Current-compensated D core double chokes
512/16
Please read Cautions and warnings and
Important notes at the end of this document.
B82731M/HPower line chokes
Impedance |Z| versus frequency f
measured with windings in parallel at +20 °C,
typical values
Current derating Iop/IR
versus ambient temperature TA
Current-compensated D core double chokes
612/16
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.
■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.
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.
712/16
Important notes
The following applies to all products named in this publication:
1. Some parts of this publication contain statements about the suitability of our products for
certain areas of application. These statements are based on our knowledge of typical
requirements that are often placed on our products in the areas of application concerned. We
nevertheless expressly point out that such statements cannot be regarded as binding
statements about the suitability of our products for a particular customer application. As
a rule, EPCOS is either unfamiliar with individual customer applications or less familiar with them
than the customers themselves. For these reasons, it is always ultimately incumbent on the
customer to check and decide whether an EPCOS product with the properties described in the
product specification is suitable for use in a particular customer application.
2. We also point out that in individual cases, a malfunction of electronic components or
failure before the end of their usual service life cannot be completely ruled out in the
current state of the art, even if they are operated as specified. In customer applications
requiring a very high level of operational safety and especially in customer applications in which
the malfunction or failure of an electronic component could endanger human life or health (e.g.
in accident prevention or life-saving systems), it must therefore be ensured by means of suitable
design of the customer application or other action taken by the customer (e.g. installation of
protective circuitry or redundancy) that no injury or damage is sustained by third parties in the
event of malfunction or failure of an electronic component.
3. The warnings, cautions and product-specific notes must be observed.
4. In order to satisfy certain technical requirements, some of the products described in this
publication may contain substances subject to restrictions in certain jurisdictions (e.g.
because they are classed as hazardous). Useful information on this will be found in our
Material Data Sheets on the Internet (www.epcos.com/material). Should you have any more
detailed questions, please contact our sales offices.
5. We constantly strive to improve our products. Consequently, the products described in this
publication may change from time to time. The same is true of the corresponding product
specifications. Please check therefore to what extent product descriptions and specifications
contained in this publication are still applicable before or when you place an order.
We also reserve the right to discontinue production and delivery of products.
Consequently, we cannot guarantee that all products named in this publication will always be
available. The aforementioned does not apply in the case of individual agreements deviating
from the foregoing for customer-specific products.
6. Unless otherwise agreed in individual contracts, all orders are subject to the current version
of the “General Terms of Delivery for Products and Services in the Electrical Industry”
published by the German Electrical and Electronics Industry Association (ZVEI).
7. The trade names EPCOS, CeraDiode, CeraLink, CeraPad, CeraPlas, CSMP, CSSP, CTVS,
DeltaCap, DigiSiMic, DSSP, ExoCore, FilterCap, FormFit, LeaXield, MiniBlue, MiniCell, MKD,
MKK, MotorCap, PCC, PhaseCap, PhaseCube, PhaseMod, PhiCap, PQSine, SIFERRIT, SIFI,
SIKOREL, SilverCap, SIMDAD, SiMic, SIMID, SineFormer, SIOV, SIP5D, SIP5K, TFAP,
ThermoFuse, WindCap are trademarks registered or pending in Europe and in other
countries. Further information will be found on the Internet at www.epcos.com/trademarks.
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
EPCOS / TDK:
B82731M2112A30 B82731M2132A30 B82731M2182A30 B82731M2351A30 B82731M2501A30 B82731M2601A30
B82731M2701A30 B82731M2901A30 B82731M2112A030 B82731M2182A030 B82731M2351A030
B82731M2401A033 B82731M2501A030 B82731M2601A030 B82731M2701A030 B82731M2901A030
B82731H2112A030 B82731H2132A030 B82731H2182A030 B82731H2351A030 B82731H2401A033
B82731H2501A030 B82731H2601A030 B82731H2701A030 B82731H2901A030 B82731M2801A030
B82731H2801A30 B82731H2801A030 B82731M2132A030
