Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Tantalum Capacitors

Tantalum capacitors are electrolytic capacitors which use tantalum metal for the anode. They are mainly used in circuits where large capacitance values are needed in a small physical size. They are also used in time-delay circuits for their superior stability over temperature changes. The model 173D157X0015YW is a high-quality tantalum capacitor from a reputable manufacturer.

Application Field

Tantalum capacitors are often used in applications where space is at a premium. These devices are able to provide high capacitance in a much smaller package than traditional aluminum electrolytic capacitors, making them desirable in portable electronics and other compact devices. They are also useful in high-frequency circuits due to their low ESR values, their ability to handle high ripple currents, and their low inductance and parasitic reactance. Since tantalum capacitors have a wide operating temperature range, they can be used in military and aerospace applications.

Tantalum capacitors are also commonly used in power management circuits. These components are able to store and regulate power, absorb switching transients, and reduce signal noise. They are often used to decouple power rails, bypass capacitors, and act as energy reservoirs in applications such as portable electronics, medical equipment, and automotive systems.

Working Principle

Tantalum capacitors work on the same basic principles as other capacitor types. They consist of two electrodes (a cathode and an anode), with an insulating electrolyte in between. When current is applied to the device, ions begin to collect on the anode, forming a thin insulating film. This phenomenon is known as the double layer or electric double layer effect. As current is passed through the device, these ions collect and create a capacitance.

The anode of a tantalum capacitor is typically formed from a pressed, powdered tantalum pellets that have been sintered into a porous block. The powdered inner layer acts as the cathode, and a solid layer of manganese oxide (MnO2) acts as the electrolyte. Along with the electrolyte, the device also contains a dielectric material between the anode and the cathode (typically solid oxide). This prevents the device from short-circuiting and ensures reliable operation.

When a voltage is applied to a tantalum capacitor, electrons move from the cathode to the anode, forming an electrostatic field of attraction. This field prevents the electrons from leaving the dielectric material as well as between the anode and cathode, creating a capacitance.

Tantalum capacitors are often used because of their high power density, low resistance, low cost, and low reactance.

Conclusion

The model 173D157X0015YW is a great example of a high-quality tantalum capacitor. These capacitors are often used where space is at a premium, or for applications where a large capacitance value is needed in a small package. They also are stable over temperature changes and have a higher power density than other types of capacitors. Tantalum capacitors work using the double layer effect, and operate with a voltage applied between the anode and cathode, with the dielectric material sandwiched between the two.

The specific data is subject to PDF, and the above content is for reference