Power line chokes
Current-compensated ring core double chokes
250 V AC, 1.1 … 22 mH, 0.3 … 2 A, +40 °C
Series/Type:
B82720A/K
Date:
January 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
B82720A/K
Current-compensated ring core double chokes
Rated voltage 250 V AC
Rated inductance 1.1 ... 22 mH
Rated current 0.3 ... 2 A / +40 °C
Construction
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Current-compensated ring core double choke
Ferrite core with epoxy coating (UL 94 V-0)
Plastic case (UL 94 V-0)1)
Potting (UL 94 V-0)
Sector winding
B82720A
Features
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High resonance frequency due to special winding technique
Approx. 0.7% stray inductance for symmetrical interference suppression
Suitable for wave soldering
Design complies with EN 60938-2 (VDE 0565-2) and UL 1283
UL2) and/or ENEC (VDE) approvals
RoHS-compatible
Applications
■ Suppression of common-mode interferences
■ Compact electronic ballasts in lamps
■ Compact switch-mode power applications
Terminals
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Base material CuNi18Zn20
Layer composition Ni, Sn
Hot-dipped
Pins 0.5 u 0.5 (mm) or 0.6 mm
Pins in lead spacing 10 u 7.5 (mm) or 10 u 10 (mm)
Marking
■ Product brand, ordering code, rated inductance, rated current,
graphic symbol, rated voltage, date of manufacture (YYWWD)
Delivery mode
■ Cardboard box
1) Additionally certified values:
Glow wire flammability index (GWFI to IEC 60695-2-12):
Glow wire ignition temperature (GWIT to IEC 60695-2-13):
Comparative tracking index (CTI to IEC 60112):
Ball pressure test (BP to IEC 60695-10-2):
2) UL approval with 300 V AC
Please read Cautions and warnings and
Important notes at the end of this document.
2
+850 °C
+775 °C
175 V
+125 °C
01/17
B82720K
Power line chokes
B82720A/K
Current-compensated ring core double chokes
Dimensional drawings and pin configurations
Horizontal version (B82720A)
Vertical version (B82720K)
Technical data and measuring conditions
Rated voltage VR
250 V AC (50/60 Hz)
Test voltage Vtest
1500 V AC, 2 s (line/line)
Rated temperature TR
+40 °C
Rated current IR
Referred to 50 Hz and rated temperature
Rated inductance LR
Measured 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
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