M551B128K050AG

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Tantalum - Polymer Capacitors contain a system of tantalum anode, organic electrolytic dielectric, and counter electrode forms a three terminal, integrated package with a maximum voltage as high as 6.3 V. The characteristics of these capacitors include high energy density and very low ESR, which can reach up to 10x-20x lower than traditional disk capacitors. The M551B128K050AG is one such of these tantalum - polymer capacitors and has the following proven applications and principles of work.

Application Field

M551B128K050AG capacitors are especially suited for energy storage applications. Its robust build, low ESR values and low profile makes it suitable for applications such as DC/DC converters, computer memory, and power supplies for telecom, automotive and defense applications.

This capacitor also offers excellent frequency performance, making it suitable for use in power amplifiers, oscillators and switches. Its capacity to remain stable over extended periods of time under extreme duty cycles offers excellent performance in motor drives, drones, temperature control equipment and automotive electronics. With operating temperature range covering from -55°C to +125°C, this capacitor is certified for use in lead-free reflow boards.

Working Principle

The working principle of this capacitor is based on the combination of an anode made of sintered tantalum powder and a dielectric of oxidized polymer film. This combination creates a three-terminal, integrated package with an electrolytic solution sandwiched, between a segmented- and sintered-tantalum anode and a porous counter-electrode. The anode and the counter-electrode are each connected to a separate terminal.

The interior of the capacitor is constructed out of layers of tissue-like polymer film. The polymer film act as a barrier between the anode and cathode and allows electrical charge to be stored within the capacitor. The electrons are held inside between the two layers, as the polymer film acts as a dielectric, preventing leakage while also providing space for electrons to be stored. This structure enables the capacitor to store energy and discharge it quickly.

This capacitor also offers high energy density, low ESR values, excellent body coating and the best frequency performance available in its class. Furthermore, it can operate up to 125°C, while still respecting ripple current and life expectancy requirements.

In short, M551B128K050AG tantalum - polymer capacitors are a highly robust, reliable and durable form of capacitor, perfectly suited for energy storage applications and a wide range of other applications. Its highly versatile design and unique combination of features make it an ideal choice for demanding applications.

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