The high-temperature HS and HW series of supercapacitors provides a 4.5 to 5.5V operating voltage and a higher boiling-point electrolyte, extending the operating- and storage-temperature ranges from 75 to 85°C. The vendor claims that the devices deliver 100 times the power of batteries and store 10,000 times more energy than conventional capacitors. Featuring a 28.5×17-mm footprint, the HW series combines a 0.4F capacitance with a 100-mΩ ESR (equivalent-series resistance) at 5.5V. The HS series features a 39×17-mm footprint, and combines a 0.7F capacitance at with 55-mΩ ESR at 5.5V. The devices have a 20A pulse current with a 4A-rms, 71.7-kW/L power densities, and 5.5-kJ/L energy densities. Available in a 0.9×2.9-mm package, the HS and HW series supercapacitors cost $2.

Cap-xx Ltd, www.cap-xx.com