B Family

PowerStor® B Series

Eaton 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 that range from a few micro-amps for several days to several amps for milliseconds.

Data Sheet # 4390

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Conditions for Royalty Free Use of Cooper Bussmann
Supercapacitor Active Balance Design - US Patent 7,342,768

Catalog Number B0510-2R5224-R, B0810-2R5105-R, B1010-2R5155-R, B0820-2R5225-R
Dimensions See Data Sheet # 4390
Applications • Main power • Hybrid battery packs • Hold-up power • Pulse power
Working Voltage 2.5 V
Surge Voltage 3.0 V
Capacitance 0.22 F to 2.2 F
Capacitance Tolerance -20% to +80% (+20 °C)
Operating Temperature Range -25 °C to +70 °C
Packaging • Standard packaging: Bulk, 100 units per bag • Larger bulk packages available on request


  • High specific capacitance
  • Very low ESR
  • Low leakage currents
  • Long cycle life
  • UL Recognized