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R-Series Capacitors Superior Performance

CDE’s R-Series is a unique family of capacitor products that exhibits superior performance with high current and high-frequency applications. By utilizing low inductance internal constructions, optional molded resin cases, and customized terminations, R-Series capacitors are designed for fast switching IGBTSs and can serve as snubbers and high current high-frequency input filters.

R-Series capacitors are well suited for many inverter applications including:

Unique features of the R-Series capacitor include:

  • IGBT direct-mount option – With high current robust terminals spaced to match IGBT centers, CDE’s R-Series capacitors can directly mount onto input connections on IGBTs.
  • Low inductance packages – With the R-Series capacitors’ dry resin-filled construction, some unique internal laminated low impedance bus bar, and terminal construction produce extremely low inductance values.
  • High heat dissipation package – The R-Series capacitors can also utilize a resin mold package, combined with copper terminals to provide the best thermal heat dissipation systems available.
  • Snubber capacitors
  • High current DC input filters
  • High-frequency DC input filters
  • Low inductance fast reactive clamp capacitors

R-Series Capacitors Product Information and Specifications

The R-Series provides a wide range of package styles and specifications. For applications demanding unique sizes and low inductance while providing high RMS currents, the R-Series product utilizes a variety of film systems to fit many applications. Polypropylene/foil, metalized polypropylene, and polypropylene hybrids are utilized.

General Specifications

Capacitance Tolerance+/- 10
VoltagesDC rating continuous steady-state condition
DC pk pulse duty, 0-100 % reversal
AC RMS voltages from 10 Hz – 500 kHz
Current / Temp Ratings+55 ºC max ambient temperature
Operating Temperatureripple RMS current @ 55 ºC ambient
peak current @ 40 ºC ambient
EncapsulationUL 94V-0 thermosetting resin

Photo Gallery

R-Series Capacitors Family

1.5 Inductance R-Series Capacitor

R-Series IGBT Capacitor with Bus

R-Series 3 Terminal IGBT Mount

R-Series Snubbers

R-Series Capacitor with Multiple Terminals

R-Series Capacitor with Threaded Terminals

R-Series Assorted Capacitor

Contact Us

CD Snow Hill, LLC

204 Carolina Drive
Snow Hill, NC 28580

Call: (252) 747-5943

Technical Information

Application: Ultra Low-Inductance Capacitor for High-Efficiency Renewable Energy Inverter

Quick Reference

Capacitance: 0.01 to 1,000 uF

Voltage (DC): 50 to 10,000 VDC

Current (RMS): 5 to 500 amps

Current (Peak): 5 to 20,000 amp