2R5TPE470MC Capacitors

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Tantalum - Polymer Capacitors are miniature electronic components that are commonly used in a variety of applications. The 2R5TPE470MC series are low profile surface mount devices (SMD) with an extended temperature range that is suitable for operation in industrial, automotive or high reliability military environments.

These capacitors have a positive temperature coefficient that results in lower capacitance at higher temperatures, which helps reduce spurious tuning and other effects caused by thermal drift. They feature an extended temperature range of -55°C to +125°C, requiring a Pb-free terminal of RoHS and REACH compliant soldering. The 2R5TPE470MC series also provide excellent volumetric efficiency and long term reliability.

The 2R5TPE470MC capacitors are usually used in power supply circuits, especially with decoupling tasks. Their high voltage and power ratings, and their low self-inductance make them suitable for high current application where long term reliability is a must. The low ESR and ESL allow them to be used in low impedance circuits and they are also used in amplitude modulation and frequency modulation circuits where stability is required.

The 2R5TPE470MC capacitors are constructed using a tantalum-polymer technology. In this technology a tantalum pentoxide powder is encapsulated in a polymer suspension and then subjected to high heat and pressure. This manufacturing process creates a dielectric layer between two conducting layers, which provides the capacitance. This technology results in capacitors that are both small and light weight, yet are capable of handling large currents and voltages.

The working principle of a tantalum-polymer capacitor is relatively simple. When there is no voltage across the capacitor, the material inside the capacitor is considered an insulator, preventing the flow of electric current. However, once a voltage is applied to the capacitor, the material inside the capacitor changes its properties and becomes a conductor, allowing the current to flow. This flow of current charges the capacitor and produces an electric field between the two conductors inside the capacitor. This electric field stores the charge and increases the capacitance of the capacitor.

In summary, the 2R5TPE470MC series of tantalum-polymer capacitors are versatile components with a wide range of uses. They are highly reliable and can withstand extreme temperatures. They offer excellent volumetric efficiency and are capable of providing high current and voltage ratings. They are commonly used in power supplies, decoupling circuits and modulation circuits, where stability and long-term reliability are essential.

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