Proximity Sensor, Tantalum Capacitor (Ultra-High Speed), Cylinder type

Advantages of using tantalum capacitors:
1. High-frequency response: Tantalum capacitors usually have excellent high-frequency response. They can handle frequencies above 100 Hz.
2. High stability: Tantalum capacitors can maintain excellent stability over a wide temperature range. Does not change with changes in ambient temperature.
3. Long lifespan, high precision: Tantalum capacitors have an extremely long lifespan. The typical lifespan of a tantalum capacitor is usually over 10 years.
4. High capacitance density: Tantalum capacitors have high density characteristics, allowing a very small capacitor to store a large amount of charge.
Disadvantages:
Compared to aluminum electrolytic capacitors, tantalum capacitors have a smaller capacity and are also more expensive.

Figure 1. Tantalum Capacitor Structure


Figure 2 Impedance of Aluminum Capacitor and Tantalum Capacitor at 100µF