ModCap™ Modular Capacitor Concept

EPCOS' capacitor concept stops voltage overshooting at the IGBT modules when the current is shut off

Image of EPCOS' ModCap Modular Capacitor ConceptTDK Corporation's EPCOS' ModCap is a modular capacitor concept for DC link applications. The power capacitors are available for rated voltages of 1100 V to 2300 V and cover a 365 µF to 3900 µF capacitance range. The rated currents between 105 A and 180 A are type-conditioned with all types designed for 5 kA recurrent pulse currents. The maximum permitted hot spot temperature is +90°C.

In contrast to conventional cylindrical designs, the B25645A capacitor series is cubic in design and available in two versions of either 243 mm x 169.5 mm x 90 mm or 258 mm x 215 mm x 115 mm. Due to this design, the capacitors can be fitted very close to IGBT modules, thus producing very short lead lengths. This, combined with a very low 14 nH self-inductance of the capacitors, stops any substantial voltage overshooting at the IGBT modules when the current is shut off. As a result, no snubber capacitors are generally needed. This design also makes parallel connections of capacitors easy. Typical applications are compact converters for traction, renewable energies and industrial applications.

The artificial resin-filled plastic housings comply with UL94 V-0. In addition, the fire and smoke formation requirements, in line with IEC 61071, IEC 61881-1, EN 45545-2 HL3 R23, are met. This makes these capacitors well suited for use in trains.

  • Modular concept
  • Wide voltage range: 1100 V to 2300 V
  • Wide capacitance range: 365 µF to 3900 µF
  • A maximum +90°C hotspot temperature
  • Qualified according to IEC 61071, IEC 61881-1, and EN 45545-2 HL3 R23 regarding fire and smoke formation
  • Plastic housing corresponding to UL94 V-0
  • Compact converters for traction
  • Renewable energies
  • Industrial applications

ModCap Modular Capacitor Concept

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
MODULAR DCR 1025UF - 1800V - 115B25645A1108K003MODULAR DCR 1025UF - 1800V - 1159 - ImmediateView Details
MODULAR DCR 1865UF - 1350V - 130B25645A1188K003MODULAR DCR 1865UF - 1350V - 1303 - ImmediateView Details
MODULAR DCR 670UF - 2300V - 105AB25645A2677K003MODULAR DCR 670UF - 2300V - 105A0View Details
Published: 2021-01-12