What is the function of tantalum capacitor? The difference between tantalum capacitor and ceramic capacitor

Capacitor is a component composed of two metal films close to each other and separated by insulating materials. The two pieces of metal are called plates, and the material in the middle is called medium. The reason why capacitors can be divided into different types is that there are certain differences. There are many differences not only in materials, but also in design principles, working principles and structures. Tantalum is the second precious metal after precious metals, and is one of the most precious metals among rare metals. Tantalum capacitor is an electronic component mainly composed of tantalum, which is small in size and large in capacity. It is installed on the printed circuit board of many small electrical/electronic devices such as personal computers, mobile phones and digital devices. This article has collected and collated some materials, hoping to be of great reference value to all readers.

What is the function of tantalum capacitor?

1. Tantalum capacitor is a basic energy storage element, which only stores energy without producing and consuming energy;

2. Tantalum capacitor is mainly used in pulse circuit and AC circuit, which mainly plays the role of oscillation, bypass, filtering, coupling, etc;

3. Tantalum capacitor is sometimes used in DC circuit, generally as a function of isolating DC;

4. Commonly used on the ground wire, relative to the bypass;

5. Tantalum capacitor plays a role in compensating power factor in the circuit.

What is the function of tantalum capacitor? The difference between tantalum capacitor and ceramic capacitor

The difference between tantalum capacitor and ceramic capacitor

1. Different materials

They use different materials. Tantalum is used as the medium for tantalum capacitor, and ceramic is used as the medium for ceramic chip capacitor

The capacitance of ceramic chip capacitor is much smaller than that of tantalum capacitor. Tantalum electrolytic capacitor can achieve small capacity, while ceramic chip capacitor cannot achieve ideal performance if it can achieve large capacity. Tantalum capacitor is better than ceramic capacitor in most physical properties.

2. Different uses

They are also used for different purposes. Tantalum capacitors can be used for coupling, filtering, oscillation bypass and other circuits with a wide range of working frequencies, while ceramic chip capacitors are mostly used for high-frequency circuits.

The difference between tantalum capacitor and ceramic capacitor: under the same capacity, the volume of tantalum capacitor is much smaller, and the ESR of tantalum capacitor is lower than that of electrolytic capacitor, with longer service life and higher temperature resistance. However, the main material of tantalum capacitor is tantalum, which is very expensive, so the price of tantalum capacitor is very expensive. Generally, only high-end products that are not sensitive to price will consider using this capacitor product.

3. Different capacity and price

In addition, the capacity of ceramic capacitor is generally small, and it needs to be used together with electrolytic capacitor, which is more used as decoupling. Ceramic capacitor is a kind of relatively cheap capacitor. The ceramic capacitor with direct insertion is the cheapest. Many low-end appliances are used. Multilayer ceramic capacitors are most widely used, and almost all electronic products will be used.