May 2012


SMT version with highest reliability

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TDK Corporation presents a new series of EPCOS SMT inductors with the highest reliability. The components of the new R series offer 30 percent higher saturation current capability than standard series types. The saturation current is between 1.05 and 38.0 A at inductance values from 0.82 to 1000 µH. The DC resistance is between 5.0 mΩ and 1.35 Ω.

With a wide permissible operating temperature range from -55 to +150 °C, the EPCOS B82477R series of inductors satisfy the rigorous requirements of automotive electronics and are qualified to AEC-Q200. Designed with a baseplate, they offer very high mechanical stability. These components have a footprint of 12.5 x 12.5 mm2 and a maximum insertion height of 8.5 mm. Thanks to their magnetic shielding, they can be placed in direct proximity to other components on the circuit board. These high-performance inductors are RoHS-compatible and suitable for lead-free soldering to JEDEC J-STD020C.


  • AEC-Q200: Standardized reliability tests for passive components used in automotive electronics.
  • Saturation current: DC current that causes magnetic saturation and reduces the inductive resistance in an inductive component.

Main applications

  • Power supply units in automotive electronics such as for LED lighting systems
  • Clocked power supplies with high requirements on reliability and temperature range

Main features and benefits

  • High saturation currents of up to 38.0 A
  • Inductance values from 0.82 µH to 1000 µH
  • Broad operating temperature range from -55 to +150 °C
  • Qualified to AEC-Q200
  • RoHS-compatible and suitable for lead-free soldering to JEDEC J-STD020C



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