Aluminum electrolytic capacitors: TDK offers a new screw terminal series with high current capability and long service life

July 27, 2021

TDK Corporation (TSE:6762) presents the EPCOS aluminum electrolytic capacitors B43706* and B43726* series with screw terminals. The new components are designed for rated voltages between 400 V DC and 500 V DC and cover a capacitance range of 820 µF to 15,000 µF.

A special feature is the high-rated current capability of up to 56.1 A AC (100 Hz, 85 °C). In case of standard operating conditions (for example, at 300 Hz, 60 °C, 2 m/s), currents of up to 100 A can even be reached. These values mean an approx. 25 percent increase in the current capability in the case of rated conditions in contrast to previous series.

The robust capacitors are designed for a service life of 12,000 hours at 85 °C. A precise service life calculation can be performed with the online AlCap Tool ( Similar to other EPCOS screw terminal series, a range of options such as heat sink mounting or special terminals are available as reverse polarity protection.

The new capacitors are particularly well suited to frequency converters and industrial power supplies as well as UPS systems. Furthermore, the capacitors can be effectively used for converters in the renewable energies sector, such as wind power and photovoltaic systems.

Main fields of application

  • Industrial frequency converters and power supplies as well as UPS systems
  • Wind power and photovoltaic systems

Main features and benefits

  • High-rated current capability of 56.1 A AC (100 Hz, 85 °C)
  • Current capacity increased by up to 25 percent at rated conditions compared to previous series
  • Long service life of 12,000 hours at 85 °C

leave a reply