M39006/25-0251H

Tantalum Capacitors

Tantalum capacitors are a type of electrolytic capacitor, a specific sub-class of capacitors. They are used in electronic circuits to store energy in the form of electric charge. These are particularly suitable for use in audio devices and other low-cost applications since they are physically very small and have the advantage of being self-forming. Electrolytic capacitors like M39006/25-0251H are typically used to filter noise and other high frequency signals from audio circuits.

M39006/25-0251H Application Field and Working Principle

M39006/25-0251H is a type of Tantalum capacitor used in a variety of electronic applications such as filtering high frequency signals out of audio circuits, power supply hold-up capacitance, and noise suppression. These capacitors are usually constructed with a tantalum anode and oxide layer, as well as a cathode which is typically composed of a metal or conductive polymer. When the capacitor is connected to a power supply, the voltage applied across it causes the anode to dissolve into the electrolyte, creating an oxide film which acts as the dielectric. The oxide film creates an electric field which stores energy.

The capacitance of a Tantalum capacitor is expressed in Farad (F). Depending on the application, the capacitor will either require a specific capacitance value or the lowest possible value to avoid creating noise in the circuit. The M39006/25-0251H capacitance ranges from 1uF to 10uF, while its typical capacitance tolerance is 10%, and its maximum working voltage is 16V DC.

Advantages

Tantalum capacitors have several advantages when compared to other types of capacitors. These include:

• High capacitance to size ratio - Tantalum capacitors can have higher capacitance values than other types of capacitors in the same size package.
• Long life - The internal construction of Tantalum capacitors is designed to have a long life expectancy, typically more than 10,000 hours.
• Self-forming - The construction of Tantalum capacitors do not require additional forming operations before installation, eliminating a costly and labor-intensive step.
• Compact size - Tantalum capacitors are physically small due to their highly-efficient internal construction, allowing them to be used in compact circuitry.
• High temperature range - Tantalum capacitors can be used in applications with wide temperature ranges.

Disadvantages

Tantalum capacitors also have several drawbacks. These include:

• High impedance - Since the oxide layer of Tantalum capacitors has a higher impedance than other types of capacitors, their ability to filter high frequency signals is usually lower.
• High cost - Tantalum capacitors tend to be more expensive than other types of capacitors.
• Corrosion - The anode of Tantalum capacitors is prone to corrosion when exposed to the environment, including moisture, heat, and oxygen.
• Ribbon effect - If extreme jump in voltage is applied, it can quickly break down the oxide film of the capacitor, causing a ribbon-like effect.

M39006/25-0251H utilizes the advantages of Tantalum capacitors to provide an effective and efficient filtering solution for various electronic applications. Its higher capacitance values in a compact package, combined with its long life expectancy and self-forming design make it an ideal choice for low-cost designs.