T55T336M6R3C0200

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Tantalum-polymer capacitors, also known as Liquid Electrolytic Capacitors or T55T336M6R3C0200, are small, compact, solid electrolytic capacitors found in a variety of commercial applications. They represent a significant advancement in the design of power supplies and other power circuits, providing higher performance levels while minimizing size and cost. These components are an extremely valuable part of the circuit design toolkit, and as such, their working principles need to be understood and considered carefully by the designer.

The first use of the Tantalum-polymer capacitor technology was in the 1970s, when it was used to improve the performance of switching power supplies. By limiting noise and improving power efficiency, these capacitors enabled the power supplies to operate at much higher frequencies and offer improved overall performance. They continued to evolve until the present day, when they are commonly used in a wide range of circuits, from DC-DC converters to high-frequency amplifier circuits.

The Tantalum-polymer technology employs a thin, flexible dielectric material, usually an organic polymer or a high temperature-resistant ceramic material, to achieve its remarkable performance characteristics. This thin dielectric layer serves as the insulating barrier between the electrical conductors, allowing the capacitor to store and transfer electrical energy without any kinds of losses. The reason for the capacitor’s improved performance compared to traditional electrolytic capacitors is due to the ultra-low dielectric losses that it offers.

The construction of the Tantalum-polymer capacitor consists of two layers. The first layer, called the cathode, is made up of a conductive material such as aluminum. The second layer, known as the anode, consists of a solid aluminum, tantalum, or conductive polymer material. The two layers are separated by a thin dielectric material, where a thin tantalum oxide coating is used to secure the two layers together, forming a strong and reliable joint.

The working principle of a Tantalum-polymer capacitor is quite simple: electrical energy is transferred between the two layers of the capacitor, and the thin dielectric material prevents the electrical energy from degrading or being dissipated. When a voltage is applied across the capacitor, the charges stored in the anode and cathode layers are separated and stored. This is the equivalent of energy being stored or “charged” in the capacitor. When the voltage is removed, the energy stored in the capacitor is released, allowing for the electrical energy to move from the positive to the negative layer.

Due to their low equivalent series resistance (ESR) and efficient dielectric, Tantalum-polymer capacitors are highly sought after in the power supply and other power circuit design. These capacitors can be used in high frequency circuits, such as switched-mode power supplies, as well as DC-DC converters, SMPS systems and other low frequency power circuits. Additionally, these capacitors are also well-suited for use in high current circuits, where the high performance of the capacitor allows for higher levels of current to be handled while maintaining the low ESR characteristics.

Tantalum-polymer capacitors offer excellent performance when used in both AC and DC circuits, allowing for higher current to be handled without sacrificing efficiency or reducing power loss. Their small size and reduced cost also make them a popular choice in low-power systems, where their cost savings and reliability can be valuable assets. The Tantalum-polymer capacitor is a powerful and reliable tool for the modern electronic designer, offering improved performance and increased reliability.

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