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bleLayerCapacitors

209NOTEDesign, Specifications are subject to change without notice.Ask factory for technical specifications before purchase and/or use.

ELECTRIC DOUBLE

LAYER CAPACITORS TECHNICAL NOTE

7/30/2019 Dlc Tecnote

2/4

1-4 Construction of DYNACAP

The series which consists of coin cells is similar to

that of coin-type batteries as shown in Fig.2. DYNA-

CAP contains a single cell or two to three cells stacked

in series.

Since these series have a large electrode-to-electrode

distance and a small electrode area exhibiting a large

internal resistance, they are suitable for the memory

backup application that involves microcurrent

discharge.

These series have a small electrode-to-electrode

distance, allowing a large electrode area because of

the winding structure. This decreases the internal

resistance, which is primary suitable for applications

requiring high-power such as motor drive and LED

lighting that need high currents.

Generally, the life of Electric Double Layer Capacitors

is largely affected by the ambient temperature.

The expected life is approximated by the equation as

shown below:

Note that the above equation does not cover charge

and discharge. In the case of charge and discharge,

heat generation occurs inside a capacitor; the

temperature rise by this heat generation must also be

considered.

Expected lifetime at temperature T

Lifetime at temperature

Expected working temperature

Upper category temperature

Where,

The cylindrical cell construction as seen in the DZ and

DZN series has the construction similar to that of

aluminum electrolytic capacitors as shown in Fig.3.

2 Description of Life Expectancy

Fig.2 Example of Basic Construction of Coin Cell

Fig.3 Example of Basic Construction of Cylindrical Cell

Gasket Electrolyte Cap

Activated carbonelectrode

Activated carbonelectrode

Separator

Separator

Aluminumcase Seal rubber

Terminal

Case

210CAT.No.2013/2014E

NOTEDesign, Specifications are subject to change without notice.Ask factory for technical specifications before purchase and/or use.

TECHNICAL NOTEELECTRIC DOUBLE

LAYER CAPACITORS

7/30/2019 Dlc Tecnote

3/4CAT.No.2013/2014E

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ElectricDou

bleLayerCapacitors

211NOTEDesign, Specifications are subject to change without notice.Ask factory for technical specifications before purchase and/or use.

ELECTRIC DOUBLE

LAYER CAPACITORS TECHNICAL NOTE

7/30/2019 Dlc Tecnote

4/4

4 Series-parallel connection packaged products.Electric Double Layer Capacitors have a low operating voltage per cell.

To deal with this, ELNA is ready to offer series packaging for high operating voltages to meet to various needs.

In case of a low voltage (up to about 24 V) for the DZ and DZN series with relatively low capacitance,

If a electric double layer capacitor is used in a heat-and-high-humidity environment, the characteristic willdeteriorate.We can improve the durability in heat-and-high-humidity environment by coating of special resin.Please consult about resin coating.

we are preparing simple packaged products.

No full-scale voltage equalization circuit has been equipped yet, but comparatively low cost and flexible layout

can be realized.

Example of packaged item

Please consult with us on optimization and design.

Packaged item

5 Moisture-proof provision

6 ApplicationsFeatures & Benefits of Electric Double Layer Capacitor

212CAT.No.2013/2014E

NOTEDesign, Specifications are subject to change without notice.Ask factory for technical specifications before purchase and/or use.

TECHNICAL NOTEELECTRIC DOUBLE

LAYER CAPACITORS