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Bench Talk for Design Engineers

Bench Talk


Bench Talk for Design Engineers | The Official Blog of Mouser Electronics

New Tech Tuesdays: TDK Electric Double Layer Supercapacitors Provide Charge Storage Solutions Tommy Cummings

New Tech Tuesday

Join journalist Tommy Cummings for a weekly look at all things interesting, new, and noteworthy for design engineers.

We all need our power supplies to be reliable. So much rides on whether we can turn to dependable and adequate energy storage when a power supply becomes an issue.

TDK has a solution to these concerns with its Electric Double Layer Supercapacitors (ELDC). TDK's supercapacitors are charge storage devices that have low resistance and high power density, giving them excellent instantaneous power.

TDK's EDLC electric double-layer supercapacitors are primarily made from activated carbon, aluminum, and ion electrolyte. The capacitors can be repeatedly charged and discharged without the need for a chemical reaction for the capacitor to function. Due to their clean electrical design and material composition, EDLC supercapacitors are remarkably safe. They will not ignite or smoke even if bent, crushed, or punctured.

In this week's New Tech Tuesdays, we'll examine TDK's EDLC series of products and their applications and features.

Supercapacitors With Super Features

The ELDC series expands the possibilities of application development. Supercapacitors are used in a range of applications, including memory backup, battery load leveling, and energy harvesting.

Supercapacitors also support applications that require instantaneous peak-power assist, backup power during power outages, and output power stabilization. Additionally, their low profile, small footprint pouch design makes these supercapacitors the smart choice for space-saving applications where a single EDLC supercapacitor can provide the same amount of energy, or more, as multiple electrolytic or in the miniaturization of batteries where these supercapacitors can act as secondary batteries.

TDK offers wound and stacked film EDLC supercapacitors. The wound type consists of two cells, each wound with an electrode and a separator, and enclosed with an aluminum laminate film. In the stacked film laminated type, electrodes and separators are laminated and enclosed in stainless steel lamination films to provide high bending strength. Additionally, these supercapacitors are available with capacitances ranging from several mF to 500mF to rated voltage ranges from 3.2V to 4.2V.

Seen, Heard, and Other Purposes

Devices with electronic paper displays can also benefit from EDLC supercapacitors. Using EDLCs for battery assist gives users a smoother screen-display speed and can flip pages like paper. The use of a supercapacitor allows for a smoother display of PDF files, enhancing the enlargement of small figures and tables.

EDLC supercapacitors can also assist in audio equipment performance, providing an instantaneous power boost to an amplifier unit if a sudden power change occurs.

Similarly, EDLC supercapacitors can be used to bridge power gaps in fingerprint authentication and near-field communication applications, where the power requirements may vary.

Tuesday's Takeaway

The ability to use surplus regenerative power from regenerative energy will contribute to developing energy conservation technology. TDK's line of EDLC supercapacitors provides solutions toward that development.

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Tommy Cummings is a freelance writer/editor based in Texas. He's had a journalism career that has spanned more than 40 years. He contributes to Texas Monthly and Oklahoma Today magazines. He's also worked at The Dallas Morning News, Fort Worth Star-Telegram, San Francisco Chronicle, and others. Tommy covered the dot-com boom in Silicon Valley and has been a digital content and audience engagement editor at news outlets. Tommy worked at Mouser Electronics from 2018 to 2021 as a technical content and product content specialist.

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