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Murata boasts thinnest electric double-layer capacitors

25 Sep 2012

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Murata Manufacturing Co. Ltd has announced that it will start mass production of what it claims as the world's thinnest electric double-layer capacitors. The DMF series features low resistance and the highest levels of power density throughout the industry, a benefit when used as an auxiliary power supply for LED flash units.

Electric double-layer capacitors are capable of storing energy with physical adsorption of the ion on the surface of active carbon without using chemical reactions. This makes them not only able to semi-permanently repeat electrical charging and discharging in comparison with normal rechargeable batteries, but also able to be charged and discharged rapidly, stated the company. They also do not use lead or any other toxic substances, and because of this they are attracting much attention as storage devices that conform to RoHS.

The DMF series features an optimised internal configuration to realise a design about 30 per cent more compact than the DME series. It also features the highest levels of power density in the industry and the same low resistance of a few dozen milliohms and stable temperature characteristics as the DME series, enabling it to be charged and discharged flexibly through high-output and low-output areas in a wide variety of temperature ranges, added Murata. The capacitors can be used as the power supplies for camera flashlights using high-intensity LEDs, and will contribute to improving the brightness of LED flashlights on not only digital cameras, but also on smartphones.

The device touts an equivalent series resistance (ESR) from 40-90mΩ, which enables high-current and high-output charging and discharging. It likewise features an operating temperature range of -30 degrees Celsius to 70 degrees Celsius.

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