Electrocube, design manufacturer of electronic components

744B Metallized Combination Capacitors IGBT Snubber

High Current Film Capacitors Product Data Sheets

The Electrocube 744B series is part of a designated line of film capacitors specially designed and optimized for high current applications subject to AC and pulsing signals. This film capacitor series offers high frequency operation and stability in a miniature package able to handle high surge currents without degrading. It’s a rugged, non-inductively wound metallized capacitor with flame-retardant polyester outer wrap and flame- retardant epoxy endfill. Manufactured with design expertise and high-grade materials, engineers prefer the 744B series for any high current applications such as avionics, wind generation and other high power applications.

744B Series Available in oval shape 744B Series Available in oval shape
  • Protective clear wrap offered on all wrap and fill units
  • Extended electrode construction and standard tin-coated, oxygen-free solid copper leads
  • Tolerances available: ±5%, ±10%, ±20%
  • Epoxy Resin endfills meet or exceed flammability requirements of UL94V0
  • Compliance and certification to worldwide and other environmental standards available upon request; available in RoHs construction only
  • May be used for frequencies up to 100 KHz
  • Applications include pulse, filter circuits as well as audio amplifiers, speakers and musical instruments
  • 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]
  • Dimensional variations for all mfd. values available with same volume


Temperature range
  • -55°C to +85°C at rated voltage

Dielectric voltage test

  • Will withstand 200% of DC rated voltage for a period not to exceed 1 minute at temperature of 25°C
  • Current limited to 5 mA

DC life test

  • Will withstand 140% of DC rated voltage at 150°C for 250 hours with not more than 1 failure in 12 permitted
  • Current limited to 5 mA
  • Additional life test details available

Insulation resistance

  • ≥ 30Kmeg X μf, NTE 100Kmeg

Dissipation factor

  • Will not exceed 0.06% 1KHz at 25°C

Dielectric absorption

  • Will not exceed 0.02% at 25°C per MIL-C-19978

Acceptance criteria

  • Measurement frequency for capacitance and dissipation factor will be 1,000 Hz
* Consult factory as sizes may change. Add tolerance designator to complete part number: J = ±5%, K = ±10%, M = ±20%
* Consult factory as sizes may change. Add tolerance designator to complete part number: J = ±5%, K = ±10%, M = ±20%
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