Product category:
Capacitors
News Release from: Flint | Subject: Panasonic gold capacitors
Edited by the Electronicstalk Editorial
Team on 10 October 2001
Double layer capacitors cover for backup
batteries
Designers seeking alternatives to conventional batteries can benefit from Flint's new range of 'gold' capacitors for applications such as memory backup and coverage during battery replacement.
Designers seeking alternatives to conventional batteries can benefit from Flint's new range of 'gold' capacitors for applications such as memory backup and power coverage during battery replacement The Panasonic-manufactured electric double layer capacitors - now available from Flint - are kinder to the environment and longer lasting than chemical cell-type batteries
This article was originally published on Electronicstalk on 24 Aug 2005 at 8.00am (UK)
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Rather than the thin dielectric employed in traditional capacitors, these devices rely on an ion absorption layer formed where charge separation occurs at the interface between activated carbon electrodes and an electrolyte.
The thinness of the layer (less than one molecule), the large effective surface area of porous activated carbon, and use of organic electrolytes all contribute to creating high capacitance in ultra-small packages.
With capacitance ranges situated between aluminium electrolytic capacitors and secondary battery cells, these devices are ideal for backing up RAM, and providing general power continuity during replacement of primary batteries.
Latest in the Panasonic range are two families of surface-mount capacitors, which offer the thermal performance demanded for reflow soldering operations.
While electric double layer capacitors are not as temperature-sensitive as batteries, they nevertheless suffer leakage problems at elevated temperatures.
Panasonic's design reduces these problems, eliminating charge leakage below 250C - more than 10C better than competing gold capacitors.
In addition, the devices boast longer service life than batteries and contain no harmful metals like nickel or lithium, reducing environmental problems.
Surface mount options available from Flint include EM series 0.2F 2.5V and EN series 0.2F 3.3V capacitors, both in 614 size 'coin' format.
The former is suitable for 2.5V output to back up devices like mobile phones, and the latter is suitable for larger devices, such as PDAs.
Complementing these latest offerings are a comprehensive range of through-hole capacitors for microamp applications at 5.5V, including SD series miniaturised devices and SE devices for miniaturised taping.
Panasonic's F series offers extended temperature operation up +85C, while HW and AL series provide 1.0 to 50.0F capacitance for 2V applications like disk drive motors, toys and safety equipment requiring milliamps of power or more.
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