TAP156M020HSB

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Tantalum Capacitors

Tantalum capacitors are a type of electrolytic capacitor made from a tantalum material. They are widely used in industrial and consumer electronics, as well as in other diverse applications. While they are relatively expensive and have limited life-span compared to other capacitor types, their small size, large capacitance, and excellent stability make them highly attractive for many uses.

Tantalum capacitors are able to provide high energy densities in small packages, as well as extremely low surface areas. These traits make tantalum capacitors an ideal choice for designers who need to maximize space on a printed circuit board (PCB). Compared to aluminum, ceramic, and other capacitor types, tantalum capacitors offer higher capacitance values. This propensity mostly stems from the fact that the material used in tantalum capacitors is significantly denser than other materials.

Tantalum capacitors can be found in two general forms – wet or dry. Wet tantalum capacitors are formed by a tantalum material and electrolyte material, which are sealed in a hermetically-sealed can. Dry tantalum capacitors, on the other hand, are formed with a solid polymer encapsulation. While dry tantalum capacitors are typically cheaper, they are also more prone to leakage issues, and are less reliable than wet tantalum capacitors.

TAP156M020HSB Application Field and Working Principle

TAP156M020HSB is a wet tantalum capacitor manufactured by the Vishay Corporation. It is a hermetically sealed, high-performance device designed for industrial, military, and high-end consumer applications. The device offers a capacitance value of 15uF and a rated voltage of 20V. It is designed to provide extended temperature range, high reliability, and high-energy-density performance.

The TAP156M020HSB is constructed with a tantalum foil anode, an electrolyte that serves as a cathode, and a metallic case. The metallic case not only protects the device from the detrimental effects of moisture, dust, and other contaminants, but also provides an electrical contact for the device. The anode and the cathode are separated by a dielectric layer, which is formed by an insulation material, or a ‘depolarizing’ solution. When a voltage is applied to the capacitor, a polarization layer forms at the anode and cathode, increasing the dielectric strength of the device and lowering its ESR (equivalent series resistance).

The TAP156M020HSB is highly sought after because of its extremely low ESR values, which range from 0.7mΩ to 1.5mΩ. It is also extremely stable, with rated leakage current values between 0.2-0.35μA. Because of these high performance characteristics, the device is suitable for a wide range of industrial and military applications, including power supplies and DC-DC converters.

The device is also quite durable, as it can operate in temperatures ranging from -55°C to +125°C, and for a maximum of 500,000 hours at its rated voltage of 20V. Furthermore, the device is extremely resistant to shock, vibration, and mechanical wear and tear. All of these performance traits make the TAP156M020HSB a great choice for designers requiring highly reliable components.

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