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捷克/薩瓦爾多工廠生產的鉭電容

捷克/薩瓦爾多工廠生產的鉭電容

SMD tantalum capacitors: as a class of electrolytic capacitors. Widely used in all kinds of electronic products, especially some high-density assembly, small internal space products, such as mobile phones, portable printers. Tantalum capacitor is made of metal tantalum (TA) as an anode material, which can be divided into foil type and tantalum sintered powder type according to the different anode structure. In the tantalum powder sintered tantalum capacitors, due to the different working electrolytes, they are divided into solid tantalum capacitors and non-solid electrolyte tantalum capacitors. Among them, solid tantalum electrolytic capacitors are used in large quantities. Tantalum capacitors do not need to use electrolyte like ordinary electrolytic capacitors because they use tantalum metal as the medium. In addition, tantalum capacitors do not need to be fired with aluminum coated capacitive paper like ordinary electrolytic capacitors, so they have almost no inductance, but at the same time, they also limit their capacity.
Solid tantalum capacitor characteristics
Merit:
Small size Because tantalum capacitors use tantalum powder with very fine particles, and the dielectric constant of tantalum oxide film is ε higher than that of aluminum oxide film, the capacitance of tantalum capacitors per unit volume is large.
Wide operating temperature range, high temperature resistance Since there is no electrolyte inside the tantalum capacitor, it is suitable for working at high temperatures. Generally, tantalum electrolytic capacitors can work normally at a temperature of -50 °C ~ 100 °C, although aluminum electrolysis can also work in this range, but the electrical performance is far inferior to tantalum capacitors.
Long life, high insulation resistance, low leakage current Tantalum oxide film medium in tantalum capacitors is not only corrosion-resistant, but also can maintain good performance for a long time
The capacity error is small
Small equivalent series resistance (ESR) and good high frequency performance

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