Tantalum Capacitor is a common electrolytic capacitor. Tantalum metal is used as electrode material, which has high capacitance, high stability and good reliability. The following is a detailed description of various parameters of tantalum capacitors, including voltage range, capacitance range, working temperature, life range, characteristics and application range.
Common working voltage: The working voltage range of tantalum capacitors is generally between 4V and 50V, and some high-voltage tantalum capacitors can reach higher voltage. Maximum withstand voltage: According to different specifications, the maximum withstand voltage of tantalum capacitors can be between 50V and 100V. Relationship between withstand voltage and capacitance: Tantalum capacitors with higher voltage usually have smaller capacitance. Voltage selection: Generally, the rated voltage of the capacitor should be selected according to the requirement that the voltage in the circuit is 20% higher to increase the reliability. Voltage withstand characteristics: the voltage withstand performance of tantalum capacitor is relatively stable, but when it exceeds the rated voltage, the capacitor will face the risk of damage.
Common capacitance value: the capacitance of tantalum capacitor is usually between 1μF and 1000 μ f. Capacity and volume: Tantalum capacitors with large capacity have large volume, and when high voltage or high capacitance specifications are usually selected, the volume will increase accordingly. Small capacity application: For some high frequency or filter circuits, the capacitance of tantalum capacitor can be as low as several picofarads (pF). Capacitance stability: Tantalum capacitor has good capacity stability, which is superior to aluminum electrolytic capacitor. High temperature stability: Due to the material characteristics, the capacitance of tantalum capacitor changes little at high temperature.
Common operating temperature range: The operating temperature range of tantalum capacitors is usually * *-55 C to+125 C * *. High temperature stability: Tantalum capacitor has good high temperature performance, and the capacitance value changes little in high temperature environment. Low temperature performance: Although tantalum capacitor performs well at low temperature, its equivalent series resistance (ESR) may increase at low temperature, which will affect its performance. Extreme temperature resistance: Some high-end tantalum capacitors can adapt to extreme operating temperature range, such as military-grade tantalum capacitors, and can work in a wider temperature range. Influence of temperature on life: When working in high temperature environment, the life of tantalum capacitor will be shortened, so it is necessary to choose a suitable working temperature range according to practical application.
Life expectancy: Under the standard working environment, the life of tantalum capacitors is usually 2000 hours to 5000 hours, and the specific life is related to working temperature, working voltage and other factors. Life at high temperature: High temperature will accelerate the aging of the capacitor, and the life of the capacitor will be reduced by about half for every 10°C increase in working temperature. Related to current density: the life of tantalum capacitor is also related to current density. Too high current density will lead to too high temperature rise, thus shortening the life of capacitor. Self-discharge rate: the self-discharge rate of tantalum capacitor is low, but with the increase of service life, its capacity will gradually decrease. Deterioration characteristics: Tantalum capacitors may have faults such as open circuit and short circuit during use, so the use environment is required.
High stability: Tantalum capacitor has good capacitance stability and is not easily affected by temperature and voltage changes. Low ESR (equivalent series resistance): Tantalum capacitor has low ESR, which is suitable for circuits that need high efficiency power filtering and stable current. Miniaturization: Compared with other types of electrolytic capacitors, tantalum capacitors are smaller in size and suitable for equipment requiring compact design. Long-term stability: Tantalum capacitors have long service life and slow performance decline, which is especially suitable for occasions with high stability requirements. High temperature resistance: Tantalum capacitor can work stably in high temperature environment and is suitable for use in harsh working environment.
Consumer electronics: used for filtering, decoupling, energy storage, etc. in mobile phones, notebook computers, televisions, cameras and other consumer electronic devices. Automotive electronics: used in the fields of power filter, noise suppression and engine control in automobiles. Industrial equipment: In industrial applications such as automation control, instruments and monitoring systems, tantalum capacitors are used for power supply voltage stabilization and signal filtering. Medical equipment: Tantalum capacitors are commonly used in medical equipment, providing stable power supply, accurate filtering and anti-interference ability. Aerospace: Tantalum capacitors are often used in systems with high reliability requirements such as satellites and aircraft because of their high stability and high temperature resistance.
Tantalum capacitors are widely used in electronic devices that need high reliability and long life because of their stability, small size and high temperature resistance. However, it is necessary to pay attention to its working voltage and temperature limitations to ensure that it will not be damaged or its performance will decline during use.
