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958A Series Metallized Polypropylene DC Link Capacitors

Capacitors Product Data Sheets

The Electrocube capacitor 958A series is a rugged, non-inductively wound metallized polypropylene DC link capacitor. It offers high current and reliability in a high impact polymer case for insulation and durability. It’s an excellent replacement for an electrolytic capacitor, providing better reliability with its high current and low ESR. Created with high-grade materials, design and manufacturing, engineers prefer the 958A capacitor series for any high current power inverter applications that require long life under extreme operating conditions such as EV power conversion, aircraft power systems, battery chargers and other high pulse applications.

Available in threaded insert or terminal studs
Available in threaded insert or terminal studs
  • Extended electrode construction
  • Tolerances available to ±5%, ±10%
  • Polymer case & dry construction
  • Epoxy Resin fill meet or exceed flammability requirements of UL94V0
  • Compliance and certification to worldwide and other environmental standards available upon request; RoHS and Non-RoHS available on most units
  • May be used for frequencies up to 100 KHz
  • Customizable insulating sleeves, mountings, special terminals, non-standard leads, circuit connections and other hardware
  • Assorted styles, ratings and customization for unusual requirements necessitated by special circuit applications [including higher IR or lower DF]


Temperature range

  • -55°C to +85°C at rated voltage

Dielectric voltage test

  • Will withstand 150% of DC rated voltage for a period not to exceed 1 minute at temperature of 25°C terminal to terminal
  • Current limited to 5 mA
  • Will withstand 3 KVAC 50/60 Hz terminal to case at 25°C for 1 minute

DC life test

  • Will withstand 140% of DC rated voltage at 85°C for 250 hours with not more than 1 failure in 12 permitted
  • Current limited to 5 mA
  • Additional life test details available

Life expectancy

  • 100,000 hours at rated voltage and 70°C

Dissipation factor

  • Will not exceed 0.2% at 25°C

Dielectric absorption

  • Will not exceed 0.2% at 25°C per MIL-C-19978

Acceptance criteria

  • Measurement frequency for capacitance and dissipation factor will be 120 Hz
Capacitor selection is extremely important to achieve the best voltage and current-carrying capability for DC link capacitors. Find out how to select DC Link Capacitor.
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