TDK Electronics · TDK Europe

October 23, 2014

Aluminum electrolytic capacitors: Compact screw terminal series with high ripple current capability


TDK Corporation presents three new series of EPCOS aluminum electrolytic capacitors with screw terminals. They are characterized by their high ripple current capability and simultaneously highly compact dimensions. The capacitors of the new B43703* series are designed for rated voltages from 350 V DC to 450 V DC and cover a capacitance range from 1500 µF to 22 000 µF. They are up to 20 percent smaller than those of the predecessor series at the same ripple current capability. The new types have diameters of 51.6 mm to 90.0 mm; their heights range from to 197.0 mm.

The new B43704* series offers not only a ripple current capability up to 25 percent higher than for the predecessor series, but also smaller dimensions. Their diameters are also between 51.6 mm and 90.0 mm with heights of between 80.7 mm and 221.0 mm. These capacitors are designed for rated voltages from 350 V DC to 550 V DC. Their capacitance extends from 820 µF to 22 000 µF.

In the new B43705* series, the ripple current capability was increased by up to 40 percent compared with the predecessor series, while maintaining the same compact dimensions. These capacitors have diameters ranging from 51.6 mm to 90.0 mm and insertion heights from 80.7 mm to 221.0 mm. They are designed for rated voltages from 350 V DC to 450 V DC and their capacitance range extends from 1000 µF to 18 000 µF.

All three new EPCOS series are designed for a maximum operating temperature of 85 °C and attain a useful life of 12 000 hours. The series are also offered in B43723*, B43724* and B43725* versions. These types additionally have a threaded stud on the base of the can for mounting the capacitors.

The main applications of the new EPCOS aluminum electrolytic capacitors are converters in industrial electronics.

Main applications

  • Converters for use in industrial electronics

Main features and benefits

  • Significantly higher ripple current capability and more compact dimensions compared with the predecessor series
  • Useful life of 12 000 hours at a maximum temperature of 85 °C

Key data

[ V DC]
Max. temperature
[°C] /
Useful life
B43703* / B43723*51.6 to 90.080.7 to 197.0350 to 4501500 to 22 00085 / 12 000
B43704* / B43724*51.6 to 90.080.7 to 221.0350 to 550820 to 22 00085 / 12 000
B43705* / B43725*51.6 to 90.080.7 to 221.0350 to 4501000 to 18 00085 / 12 000

Further information on the products can be obtained from Sales under

Please forward reader inquiries to marketing.communications(at)



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 2014, TDK posted total sales of USD 9.6 billion and employed about 83,000 people worldwide.

* 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.

Media Contact

Christoph Jehle TDK Electronics AG Munich/Germany Phone +49 89 54020-2441 Get in contact
Debbie Martin TDK Electronics Inc. Fountain Hills, AZ/USA Phone +1 480 836-4104 Get in contact
Candido Dall'Agnoll TDK Electronics do Brasil Ltda. São Paulo/Brazil Phone +55 51 3484-7007 Get in contact
Himalaya Baghel TDK India Private Limited Mumbai/India Phone +91 12 04 50 58 42 Get in contact
Stella Suen TDK Electronics Hong Kong Limited Phone +852 3669-8224 Get in contact
Vincent Gaff Tronic's Microsystems SA Phone +33 4 76 97 29 60 Get in contact

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