Ask a question
11 June 2020 am

TDK Axial hybrid-polymer aluminum electrolytic capacitors

June 2, 2020 TDK Corporation has extended its product range of hybrid-polymer aluminum electrolytic capacitors and now offers two series with an axial design. The B40600* / B40700* series is designed for rated voltages of 25 V and 35 V. These cover a capacitance range from 780 µF to 2200 µF.  Capacitors in the 63 V voltage class with capacitance values from 390 µF to 720 µF are available with the B40640* / B40740* series.

The capacitors are produced in four can sizes ranging from 14 x 25 mm to 16 x 30 mm (D x H). These are available in an axial-lead design (B406*) or as a solder star version (B407*), providing a wide variety of mounting options. The inner structure of all axial hybrid-polymer aluminum electrolytic capacitors is optimized for the thermal connection to a heatsink. Thanks to the stable mechanical design, a reliable long-term connection to the heat sink can be achieved, thereby offering excellent heat dissipation. For designs with heat sinks, versions without shrink-on sleeves are offered in both series, while for freestanding assembly, components with a PET shrink-on sleeve are available.

Both series are designed for a wide range of operating temperatures from -55 °C to 150 °C with a useful life of 4000 hours at 125 °C. The great advantage of hybrid-polymer technology is its extremely low ESR values across the wide temperature range. For example, with a can size of 16 x 30 mm and an ambient temperature of 20 °C, an ESR of 3.5 mΩ can be achieved.

These capacitors are typically used in automotive and industrial applications. Examples include bidirectional converters for 48 V boardnet, motor inverters or hybrid vehicles, electrically- driven power steering systems, pumps, electrical turbochargers and superchargers, radiator cooling fans, gearbox controls and output filters for switch-mode power supplies.

Main applications

  • Bidirectional converters for 48 V on-board supplies
  • Motor inverters of hybrid drives
  • Electrically driven power steering systems
  • Water pumps
  • Electrical turbochargers and superchargers
  • Radiator cooling fans
  • Gearbox controls
  • Output filters for switch-mode power supplies

Main features and benefits

  • Very low ESR, for example 3.5 mΩ max. at 20 °C in a can measuring 16 x 30 mm 
  • Wide temperature range from -55 °C to +150 °C 
  • Service life of 4000 hours at 125 °C [h]

The site uses cookies. If you agree to the use of cookies, please click the “I agree” button or continue browsing. You can cancel your consent at any time by changing your web browser settings and deleting your saved cookies. You can read more about cookies in our Privacy Policy.