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Tantalum - Polymer Capacitors

M550B108M060AH Application Field and Working Principle

The M550B108M060AH tantalum-polymer capacitors are capable of producing a significantly higher capacitance per unit volume than other capacitor formats such as aluminum electrolytic, ceramic and film. The M550B108M060AH capacitor is constructed using a tantalum anode with a layer of anode containing electrolytic powder. This anode is sealed in an anodized aluminum case that is specifically designed to ensure an electric circuit between the anode and cathode is maintained. This anode is connected to a "tantalum coil" within the capacitor body which is then followed by the cathode. This cathode is composed of a special polymer material that "swells" when in contact with an electrolyte, increasing the internal volume of the capacitor.

The M550B108M060AH capacitors are typically used in high-frequency, high-reliability applications. This can include defense and aerospace systems, engine control and sensor modules, communications systems, consumer electronics, networking and telecom equipment and other industrial applications. The capacitance of the M550B108M060AH tantalum-polymer capacitor is significantly higher than other capacitor formats, due to the higher percentage of active material used in the construction. As a result these capacitors are used in applications that require higher capacitance with a relatively small form factor.

M550B108M060AH capacitors utilize a dynamic working principle to achieve the higher capacitance per unit volume than other capacitors. In a standard capacitor, the electrostatic field between the plates of a capacitor stores the electric charge. In the case of a tantalum-polymer capacitor, the electrostatic field between the anode and cathode is stored by the electrolytic powder. Thispowder absorbs the electric charge and stores it until it is needed.

The process of charging and discharging the M550B108M060AH capacitor occurs in three distinct steps. First, during the charging process, the positive ion in the electrolyte powder is attracted to the negative electrode. The ions attach to the anode, forming a layer of electron charge on the anode. As this occurs, the voltage between the two plates increases. Secondly, when the voltage drops, the electrolyte powder is charged, releasing a counter charge on the anode. Finally, when the anode reaches its maximum capacity, the voltage drops and the capacitance returns to its original level.

The M550B108M060AH capacitor provides superior performance with regard to leakage and stability due to the unique construction and working principle. The use of the tantalum anode and the higher percentage of active material allow the capacitor to store more charge per unit volume and provide higher stability. This makes the M550B108M060AH ideal for high-frequency, high-reliability applications. The capacitance per unit volume is significantly higher than that of other capacitor formats, and this makes it one of the best options for these types of applications.

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