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Tantalum - Polymer Capacitors

13030-03MASLB application field and working principle

Tantalum - polymer capacitors are widely used in applications where small form factor and high capacitance are important. In comparison with traditional tantalum – manganese oxide capacitors, they have a greater energy density, extendable capacitance, faster charge and discharge time, and don\'t have a fatigue, a wide operating temperature range, and no risk of fire or leakage. Helped by these features, they\'re widely used in computers and mobile phones, consumer electronics, automotive Electronics, medical devices and military systems.

The 13030-03MASLB has an even smaller form factor and higher capacitance than other types of tantalum - polymer capacitors. It is a surface mount version in a tiny package composed of a three-terminal tantalum manganese dioxide anode, a solid anion-conducting polymer electrolyte and a liquid cathode composed of a lithium ion salt and a non-aqueous solvent. This type of cap also brings improved high frequency response and reliability.

Working Principle

The 13030-03MASLB works much like traditional tantalum-manganese oxide capacitors. However, due to its use of an anion-conducting polymer electrolyte and a liquid cathode, its capacitance can be greatly increased without increasing its size. In addition, the polymer electrolyte has no fatigue, can handle more current and has a much wider temperature range.

In the 13030-03MASLB, an electrical charge is created when an anode composed of a metal oxide – such as tantalum manganese dioxide – is placed in a liquid capacitor – such as a lithium-ion salt and non-aqueous solvent – the voltage of the anode causes the metal oxide to absorb lithium ions from the solution. This generates a charge on the anode, which is stored in the capacitor.

When a voltage is applied to the capacitor, the absorption of the lithium ions by the metal oxide is reversed, and the capacitor produces an electric current which is then discharged, resulting in the storage and release of charge.

Conclusion

The 13030-03MASLB is a compact, high-capacitance tantalum-polymer capacitor which brings a number of advantages over its traditional tantalum-manganese oxide counterparts, such as its small form factor, wide operating temperature range, and improved high frequency response and reliability.

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