20SVQP47M

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Aluminum-Polymer Capacitors

Aluminum-polymer capacitors are gaining popularity, due to their capability to provide a diverse range of high-performance solutions for a wide range of applications. Especially in the context of small, low-power design, they offer better ESR than aluminum electrolytic and tantalum capacitors. They are also good candidates when long-term reliability is important.

Advantage of Aluminum-Polymer Capacitors

Aluminum-polymer capacitors are gaining popularity due to several advantages:

• Smaller form factor, due to the absence of a wet electrolyte
• Low ESR and excellent temperature stability for lower ESR tolerance
• High DV/DT capability for higher voltage spikes
• Excellent ripple current capability and self-healing properties
• Highly reliable, which makes it an ideal choice for harsh, high-temperature environments
• Less sensitivity to vibration when compared to aluminum electrolytic capacitors

20SVQP47M Application Field and Working Principle

The 20SVQP47M aluminum-polymer capacitor is a high-voltage series that offers a wide temperature range of -55°C to +105°C and a working voltage up to 10V. Typical applications of 20SVQP47M include: power management, filtering, signal integrity in audio/video systems and any other application that requires low-ESR and high-frequency flux density. This aluminum-polymer capacitor is constructed with a metallic foil anode separated from a manganese dioxide cathode by an electrolytic gel with a thin-film MLCC (multi-layer ceramic capacitor). A multi-faceted sintered ceramic body is mounted between the two electrodes to keep them aligned and stable. The ceramic body has a high dielectric constant that helps store energy and also imparts ESR reduction with higher frequency operation. The electric field generated by the alternating current flow through the capacitor causes the dielectric material to polarize, producing an electric charge on each electrode that is a function of the electric field intensity, temperature, frequency and the voltage of the power source. As the metals between the two electrodes are the same, the electric charge is the same. Therefore, the capacitance is a direct result of the amount of surface area between the two electrodes.

Conclusion

The 20SVQP47M aluminum-polymer capacitor offers an innovative solution for a wide range of low-power design applications. Due to its small form factor and excellent electrical performance, it is well-suited for applications where long-term reliability is important. It offers a wide temperature range and a high DV/DT capability, making it ideal for power management and filtering. In addition, its multi-faceted sintered ceramic body helps provide ESR reduction with higher frequency operation. Thus, 20SVQP47M aluminum-polymer capacitors are a good option when looking for high-performance while requiring low-cost reliability.

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