PowerStor X Series Ultra-Low ESR Supercapacitors


Eaton (formerly Cooper Bussmann) 300 and 400 farad XB and XV series deliver reliability with the longest life available for high-power supercapacitors

The XB series from Eaton (formerly Cooper Bussmann) delivers a technology designed to last for an application’s lifespan. Ultra-low ESR and high capacitance supply pulse power, making other energy sources more efficient. The 20-year operating life and broad temperature range results in the lowest total cost of ownership for an energy device.

The XV series from Eaton (formerly Cooper Bussmann) PowerStor supercapacitors are unique, ultra-high-capacitance devices utilizing electrochemical double-layer capacitor (EDLC) construction combined with new, high-performance materials. This combination of advanced technologies allows Eaton to offer a wide variety of capacitor solutions tailored to specific applications. Effective operation ranges from a few micro-amps for several days to several amps for milliseconds.


Features Applications

  • Operating temperature range: -40°C to +65°C (+85°C with voltage derating)
  • Working voltage: 2.7 V (XB) or 2.7 V (XV)
  • Capacitance tolerance -5% to +10%
  • Ultra-low ESR for high power density
  • UL recognized
  • Achievable operating life of up to 20 years
  • Large capacitance for high energy density

  • Hybrid battery or fuel cell systems
  • High pulse current applications
  • UPS/hold-up power
PowerStor is now part of Eaton The PowerStor brand of supercapacitors (formerly of the Bussmann division of Cooper Industries) is now part of the Eaton’s Electrical Group, Electronics Division.
PowerStor is now part of Eaton
Same great products plus even more.

XB Series

Manufacturer Part Number Description Available Quantity Datasheets
XB3550-2R5307-R CAP SUPER 300F 2.5V SNAP 88
XB3560-2R5407-R CAP SUPER 400F 2.5V SNAP 136

XV Series

Manufacturer Part Number Description Available Quantity Datasheets
XV3560-2R7407-R CAP SUPER 400F 2.7V SNAP 20
XV3550-2R7307-R CAP SUPER 300F 2.7V SNAP 99