February 19, 2013

Film capacitors: MKP types with reduced volume

TDK Corporation presents EPCOS MKP film capacitors of the B3267*P* series with a significantly reduced volume. For example the type with a capacitance of 1 µF and a rated voltage of 450 V DC has dimensions of only 8.0 x 17.5 x 13.0 mm³ thanks to a high capacitance density with a lead spacing of 10 mm. This corresponds to a volume reduction of around 40 percent compared with the predecessor type with a lead spacing of 15 mm.

The new series comprises types with lead spacings of 10 mm, 15 mm and 22.5 mm, respectively. The capacitors are designed for rated voltages of 450 V DC, 520 V DC and 630 V DC and cover a capacitance range from 68 nF to 2.2 µF. These components are suitable for a continuous operating temperature of 125 °C. The plastic of the case satisfies UL 94 V-0 specifications. Halogen-free versions are also available upon request.

Typical applications of these capacitors are passive PFC as well as output filtering for ballasts, LED power supplies and switch-mode power supplies.


  • UL 94 V-0: Classification of flammability of plastics. The V-0 classification permits no drips of flaming particles and any flames must self-extinguished within 10 seconds.
  • Halogens: Chemical elements such as bromine, iodine and chlorine, which are added to plastics to reduce their flammability.

Main applications

  • Passive PFC circuits
  • Output filtering of power supplies

Main features and benefits

  • Reduced case size: For example, dimensions of only 8.0 x 17.5 x 13.0 mm³ with a lead spacing of 10 mm for a capacitance of 1 µF and a rated voltage of 450 V DC.

Key data

Rated voltage
[V DC]
Lead spacing
B32671P*450, 520, 630100.068 to 1.0
B32672P*150.1 to 2.2
B32673P*22.50.33 to 2.2

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 which are 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/film_mkp

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