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Hybrid-Polymer Electrolytic Caps Feature Very Low ESR

Sept. 13, 2019
TDK’s new SMD series, designed for a maximum operating temperature of 125°C, offers a service life of at least 4,000 hours.

TDK Corporation recently extended its range of hybrid-polymer aluminum electrolytic capacitors with a new SMD series. The components are now available in 25-V dc/330-µF and 35-V dc/270-µF versions, each with dimensions of 10 x 10.2 mm. The capacitors, which are RoHS-compatible and qualified to AEC-Q200, are designed for a maximum operating temperature of 125°C and offer a service life of at least 4,000 hours.

According to the company, two electrical parameters in particular characterize the compact capacitors: their low equivalent series resistance (ESR) value of ≤ 20 mΩ and high ripple current of 2.8 A at 125°C and 100 kHz. These values are made possible by the hybrid-polymer technology.

In addition to automotive electronic control units, the capacitors, with the ordering codes B40900B5337M000 (330 µF) and B40900B7277M000 (270 µF), can also be used in industrial applications, says TDK.

The new SMD series supplements TDK’s axial hybrid-polymer aluminum electrolytic capacitors. These capacitors, with dimensions between 14 x 25 mm and 16 x 30 mm, are designed for rated voltages of 25, 35, or 63 V and have capacitance values from 390 to 2100 µF. Despite their low weight and volume, they offer a high-current capability for automotive power modules, claims the company.

Main Applications

  • Automotive electronic control units
  • Industrial applications

Main Features and Benefits

  • Long service life of 4,000 hours at 125°C
  • Low ESR of ≤ 20 mΩ
  • High ripple current capability of 2.8 A
  • Compact dimensions of 10 x 10.2 mm

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