BestCap Hi-Power Pulse Super Capacitors

Part Number Information
Part #: Price/Availability:
BZ01 Buy Now
BZ02 Buy Now
BZ05 Buy Now
BZ11 Buy Now
BZ15 Buy Now

Unlike traditional supercapacitors, the BestCap does not face the limitations of high ESR in the tens of Ohms range and/or high capacitance loss when required to supply very short duration current pulses. The low ESR BestCap is a perfect fit in applications where the energy source is a primary rechargeable battery and large pulse power requirements are needed. They provide high-pulse capability in a low profile package while maintaining higher voltage across the battery.

AVX's unique BestCap technology provides excellent high-power pulse characteristics based upon a combination of very high capacitance and ultra-low ESR, together with extremely low leakage current. Using a patented aqueous chemistry and innovative design, this series offers high capacitance, even with the shortest of pulse applications.


  • High pulse power
  • No polarity
  • Ultra low leakage currents
  • High capacity with short pulse durations
  • Wide variety of cap/ESR/voltage ratings with 9, 12, and 15V parts
  • Low profile of 2mm-6mm
  • Wide temperature range of -40 to +75 degrees C


  • Back-up data applications, (i.e. flash-drives, where power is lost)
  • Smart metering in parallel with primary cells
  • General battery back-up
  • Blocking out battery chatter is critical