November 13, 2012

Aluminum electrolytic capacitors: Snap-in series with very high ripple current capability and longer useful life

TDK Corporation offers two new 105 °C snap-in series of EPCOS aluminum electrolytic capacitors with a very high ripple current capability and a longer useful life. The latter is 5000 h for the B43545* series. These capacitors are available with rated voltages of 400 V DC and 450 V DC as well as capacitances of 82 µF to 820 µF. The capacitors of the B43547* series have a useful life of 8000 h and a voltage range from 200 V DC to 450 V DC. They are available with capacitances of 82 µF to 2200 µF.

The thermal resistances and ESR values of both series were further reduced, so that the ripple current capability was significantly increased. Depending on the type, these new capacitors have dimensions of between 25 x 25 mm and 35 x 55 mm (d x h). They are designed for a maximum ambient temperature of 105 °C.

Their main applications are as DC link capacitors in frequency converters for drives and inverters for photovoltaic installations as well as industrial power supplies.

Main applications

  • DC link capacitors in frequency converters for drives and inverters for photovoltaic installations as well as in industrial power supplies

Main features and benefits

  • Useful life of 5000 h and 8000 h, respectively
  • Low thermal resistances and reduced ESR values
  • High ripple current capability

About TDK Corporation


TDK Corporation is a leading electronics company based in Tokyo, Japan. It was established in 1935 to commercialize ferrite, a key material in electronic and magnetic products. TDK's portfolio includes electronic components, modules and systems marketed under the product brands TDK and EPCOS, power supplies, magnetic application products as well as energy devices, flash memory application devices, and others. TDK focuses on demanding markets in the areas of information and communication technology and consumer, automotive and industrial electronics. The company has a network of design and manufacturing locations and sales offices in Asia, Europe, and in North and South America. In fiscal 2012, TDK posted total sales of USD 9.9 billion and employed about 79,000 people worldwide.

About TDK-EPC Corporation


TDK-EPC Corporation, a TDK group company, is the manufacturer of TDK’s electronic components, modules and systems and is headquartered in Tokyo, Japan. TDK-EPC was founded on October 1, 2009, from the combination of the electronic components business of TDK and the EPCOS Group. The product portfolio includes ceramic, aluminum electrolytic and film capacitors, ferrites, inductors, high-frequency components such as surface acoustic wave (SAW) filter products and modules, piezo and protection components, and sensors.

Further information on the products can be found under www.epcos.com/alu_snap

Please forward reader inquiries to marketing.communications@epcos.com