What is tantalum capacitor, and what are the differences between tantalum capacitor and electrolytic capacitor? 1

Tantalum capacitor is an electronic component composed of tantalum metal sheet and tantalum oxide thin film. It has the advantages of high capacity density, low ESR (equivalent series resistance), low leakage current, high temperature stability, and long lifespan, and has therefore been widely used in electronic products. This article will provide a detailed introduction to the structure, working principle, manufacturing process, applications, and differences between tantalum capacitors and electrolytic capacitors.diode

1、 The structure of tantalum capacitorsdiode

The structure of tantalum capacitors consists of tantalum metal plates as electrodes and tantalum oxide as dielectrics. There is an extremely thin dielectric layer between the tantalum metal sheet and the tantalum oxide film, which is generated by anodizing the tantalum metal sheet. The entire structure is wrapped in a plastic or metal shell to protect it from environmental influences.

2、 The working principle of tantalum capacitorsdiode

The working principle of tantalum capacitors is based on the action of an electric field. When a voltage is applied to a tantalum capacitor, an electric field is formed in the tantalum oxide film. This electric field will separate the charge into positive and negative poles, which are respectively concentrated at the interface between the tantalum metal sheet and the tantalum oxide film. This forms an INA226AIDGSR capacitor, where the tantalum metal sheet is one electrode and the tantalum oxide film is the other electrode, and the extremely thin dielectric layer between them is the dielectric of the capacitor. When a capacitor is charged, the amount of charge on the tantalum metal sheet increases, while the amount of charge on the tantalum oxide film decreases, creating an electric field that increases the stored electrical energy in the capacitor. When the capacitor discharges, the stored electrical energy is released, the electric field disappears, and the amount of charge on the tantalum metal sheet and tantalum oxide film returns to its initial state.diode