Panasonic offers Gold Capacitors in smaller cells
Panasonic Automotive & Industrial Systems Europe expands its HL series of electric double layer capacitors (ELDC), or Gold Capacitors. They are offered in smaller cells, claimed to offer long life and superior performance for auxiliary power applications.
The low resistance, fast charge and discharge cycle features make the capacitors suitable for use in back-up power supplies for smart grids and servers.
The additions to the HL series ELDCs offer low resistance, combined with guaranteed long life over a wide temperature range of -40 to +85 degree C. Panasonic HL series Gold Capacitors are wound radial lead type devices. According to Panasonic, they achieve better capacitance compared to aluminium electrolytic capacitors (up to 1,000 times greater) and superior back-up performance. Additionally, they provide rapid charge and discharge cycles, (over 500,000 times) and have “exceptional” ageing characteristics, says Panasonic, to make the HL series ELDC capacitors suitable for applications such as back-up power supplies for servers and storage devices, solar-powered products, smart grid solutions, and driver-assist for motors and actuators in a variety of market sectors.
The extension to the HL Series adds nominal capacitance values of 2.5, 4.5 and 7.5F to the existing 50 and 100F parts, all rated at 2.7V DC. The ELDCs are guaranteed to maintain their capacitance and internal resistance without drifting at low temperatures; Panasonic makes the point that competitors’ products’ capacitance and internal resistance values may change by ± 30 per cent and up to seven times respectively from initial measured values.
The new, smaller-sized HL series EDLC capacitors are guaranteed for a life of 2,000 hours at +70 degree C but can achieve 1,000 hours at 85 degree C with voltage derating. For power back-up applications, where ageing characteristics cause a rise in internal resistance and rapid decline in capacitance, EDLC capacitors have benefits such as the electrolyte used mitigates such ageing effects, in effect leading to part count reduction.