550D107X9015S2B

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Tantalum Capacitors

Tantalum capacitors are a type of electrolytic capacitors. They are made up of a tantalum core anode, an oxide layer, and a stamped lead cathode. The electrolyte layer separates these components and provides an electrical connection between them. The tantalum core is surrounded by the electrolyte, which contains lithium and sodium ions suspended in a solution of organic solvent. This solution works to form a thin, highly capacitive layer around the anode.

The 550D107X9015S2B is a tantalum capacitor from the company KEMET. It has a high voltage rating of 400V with a temperature range of -55°C to +105°C and a capacitance of 10uF at 10V DC. The product is well suited for a variety of power applications, such as power supply filters, ripple suppression, and EMI/RFI noise suppression. This tantalum capacitor is also widely used in medical and military applications, due to its exceptional reliability and stable performance.

Tantalum capacitors are also known as “overvoltage” or “polarized” capacitors due to the capacitance being temperature-dependent and the anode needing to be positive for proper operation. The electrolyte layer in these capacitors has a finite breakdown voltage and can be damaged by voltage spikes or reverse polarity. Therefore, it is important to select the correct voltage rating for the application and pay strict attention to the polarity requirements of the tantalum capacitor.

The working principle of a tantalum capacitor is based on Faraday’s Law of Induction. When an electrical current passes through the capacitor, an electric field is created in the electrolyte layer that causes the metal ions in the electrolyte solution to move towards the anode. This movement of ions creates an electric charge that opposes the electric current which is then stored in the capacitor. The two main properties of a capacitor are its capacitance or “storing” ability, and its voltage rating or “breaking down” ability.

Tantalum capacitors are highly popular due to their smaller size and lower cost compared to electrolytic capacitors. They are also well-suited for high-frequency applications, as the stored charge is not susceptible to frequency-dependent losses. Additionally, due to the electrolyte’s low reactivity and the oxide’s leakage-resistance properties, they are also much more reliable and have longer lifespans than other types of capacitors.

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