The Eaton M family of supercapacitors offers high capacitance and ultra-low equivalent series resistance in 8, 10 and 13 mm diameter can sizes.
M Supercapacitor data sheet
HB cylindrical supercapacitor | 2.5 V | 3.0 F to 110 F | Eaton
HB supercapacitor
HV cylindrical supercapacitor | 2.7 V | 1.0 F to 100 F | Eaton
HV supercapacitor
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