New B3237* Series EPCOS Capacitors Offer Life up to 100,000 hrs

Press Release Summary:

TDK’s B3237* Series EPCOS MKD 3-phase Capacitors are available in voltage ranging from 250 VRMS to 850 VRMS with capacitance values ranging from 3 x 10 µF and 3 x 400 µF. Units are housed in aluminum cans with M12 bolts in the bottom with diameter between 75 and 136 mm and height between 163 mm and 350 mm. Capacitors can be operated in -40°C and +70°C temperature range. Used as output filters in power electronic devices such as converters and inverters, MKD capacitors feature current capability of up to 60 A.

Original Press Release:

Film Capacitors: Robust 3-Phase Filter Capacitors

TDK Corporation (TSE:6762) presents the new, extensive B3237* series of EPCOS MKD 3-phase capacitors for filter applications. The capacitors cover a voltage range from 250 VRMS to 850 VRMS in 10 stages and are available with capacitances of between 3 x 10 µF and 3 x 400 µF.

Depending on the type, the capacitors are designed for currents of up to 60 A. Internally, the capacitances are connected in three phases. In accordance with IEC 61071, the life expectancy is about 100,000 hours at the rated voltage, the maximum drop in capacitance being 3 percent from the initial value.

The capacitors are accommodated in robust aluminum cans with M12 bolts on the bottom. Depending on the capacitance, they have a diameter of between 75 mm and 136 mm, and a height of between 163 mm and 350 mm. The capacitors are designed for an operating temperature of between -40 °C and +70 °C.

They are UL-listed and have an internal overpressure disconnector that isolates all three internal capacitors from the feed lines. Typical applications are output filters in power electronic devices such as converters and inverters for industrial and energy applications.

Main applications

  • Output filters in power electronic devices such as converters and inverters for industrial and energy applications

Main features and benefits

  • Wide range of rated voltages from 250 VRMS to 850 VRMS
  • Capacitance values from 3 x 10 µF to 3 x 400 µF
  • Current capability of up to 60 A
  • Long life expectancy of 100,000 hours according to IEC 61071

Further information on the products can be found under

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 comprehensive portfolio features passive components such as ceramic, aluminum electrolytic and film capacitors, as well as magnetics, high-frequency, and piezo and protection devices. The product spectrum also includes sensors and sensor systems such as temperature and pressure, magnetic, and MEMS sensors. In addition, TDK provides power supplies and energy devices, magnetic heads and more. These products are marketed under the product brands TDK, EPCOS, InvenSense, Micronas, Tronics and TDK-Lambda. TDK focuses on demanding markets in the areas of information and communication technology and automotive, industrial and consumer 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 2018, TDK posted total sales of USD 12 billion and employed about 103,000 people worldwide.

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