591D687X0004D2T20H

Tantalum capacitors are a type of electrolytic capacitor composed of tantalum metal as the anode, with an oxide layer on its surface acting as a dielectric. The oxide layer is usually formed through an electrolytic process after installation. The middle layer of the capacitor acts as the cathode, which is usually composed of an activated, porous carbon material.

591D687X0004D2T20H tantalum capacitors are electrolytic capacitors with a voltage rating of 16V, a capacitance of 4.7µF, and a tolerance of ± 10%. They are typically constructed in a radial, wrap-around design with a plastic case and are widely used in electronic circuit applications.

The main advantage of tantalum capacitors over other types of electrolytic capacitors is their stability over a wide range of temperatures and conditions, making them ideal for electronic circuit applications in hostile environments. Additionally, tantalum capacitors are used extensively in portable and miniature electronic circuits due to their small size and high capacitance values.

The working principle of a tantalum capacitor is based on the principle of electrochemical double layer capacitance (EDLC). In a typical electrochemical cell, the two layers consist of two thin layers of metal oxide separated by a distance of a few nanometers. The oxide layer acts as the dielectric material between the two metal layers. Electrons are drawn from the cathode to the anode, creating a charge imbalance. This excess charge is stored in the oxide layer and a strong electric field is created between the two electrodes.

When a voltage is applied across the terminals of a tantalum capacitor, electrons are drawn from the cathode to the anode, forming an electric field. Due to the small size of tantalum capacitors, the electric field is very strong and the capacitance is relatively high, resulting in a high power density. Furthermore, the oxide layer acts as a barrier between the two metal layers, preventing electrical leakage and providing a consistent capacitance level over a wide range of temperatures and conditions.

591D687X0004D2T20H capacitors are typically used in a variety of applications, such as providing energy storage in low-frequency power supplies, filtering high-frequency signals, smoothing power supply ripple, protecting circuits against transients, and in audio filtering. Due to their high capacitance, low size and stable performance, they are commonly used for signal conditioning and isolation in consumer electronics and low-noise electric vehicles.