2 08/17
Please read Cautions and warnings and
Important notes at the end of this document.
Rated voltage 250 V AC
Rated inductance 0.4 ... 47 mH
Rated current 0.4 ... 2.8 A / +70 °C
Construction
■ Current-compensated ring core double choke
■ Ferrite core wih epoxy coating (UL 94 V-0)
■ Plastic case (UL 94 V-0)
■ Potting (UL 94 V-0)
■ Sector winding
Features
■ High resonance frequency due to special winding technique
■ Approx. 1% stray inductance for symmetrical interference suppression
■ Completely potted for local reduction of pollution degree (micro-environment)
■ Suitable for wave soldering
■ Plastic material approved to EN 60335-1 (VDE 0700-1) clause 30
1)
■ Design complies with EN 60938-2 (VDE 0565-2)
■ UL
2)
and ENEC (VDE) approvals
■ RoHS-compatible
Applications
■ Suppression of common-mode interferences
■ Switch-mode power applications
■ Household appliances ("white goods")
■ Heating control systems
Terminals
■ Base material CuNi18Zn20
■ Layer composition Ni, Sn
■ Hot-dipped
■ Pins 0.7 u 0.7 (mm)
■ Lead spacing 10 u 15 (mm)
Marking
■ Product brand, approval signs and VDE standard number, ordering code, graphic symbol,
rated current, rated inductance, date of manufacture (YYWWD.internal ID code)
Delivery mode
■ Blister tray in cardboard box
1) 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
Comparative tracking index (CTI to IEC 60112): 600 V
Ball pressure test (BP to IEC 60695-10-2): +190 °C
2) UL approval with 300 V AC
B82721K2*U*Power line chokes
Current-compensated ring core double chokes
