T520D157M006ATE015

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Tantalum - polymer capacitors is a type of capacitor characterized by a lower cost and higher capacitance in a smaller size compared with conventional aluminum electrolytic capacitors. It is made up of a tantalum anode and a solid polymer cathode. The anode is manufactured from high grade tantalum powder, which is then pressed and sintered in the form of a pellet. The cathode is produced from solid polymer electrolyte, usually a composite of polyanion and polycation.

The T520D157M006ATE015 is a specific type of tantalum - polymer capacitor, with a volumn of 15.7 mm^3 and a rated working temperature up to 125 °C. It is typically used in applications of high frequency power management and filtering, such as PDAs, cell phones, MP3 players, central processing units(CPU) and many other digital devices.

When used in digital circuits, the tantalum - polymer capacitors provide the needed "local" smoothing to reduce the peak of the voltage ripple before it reaches the downstream circuit. The capacitive value is determined by the component\'s capacitance, rated voltage, and current ripple. The capacitance of the capacitor referred to as "capacitance" can be trade off for size and value. The higher the capacitance, the larger the size and slowly the rate of charge.

The working principle of the T520D157M006ATE015 is based on the capacitive coupling of the anode and cathode electrodes. When the voltage across the capacitor reaches its rated voltage, electrochemical reactions will occur between the two electrodes. This creates a space charge which is then separated by an insulating layer of the solid polymer electrolyte. This space charge collects and stores electric energy, and in time, the electric field builds up across the dielectric causing the capacitor to polarize. Therefore, the power supply for a device is improved, and this prevents the output current from becoming too large.

The capacitor also plays a role in noise reduction as it reduces the high frequency noise associated with switching power supply. The device reduces EMI (Electromagnetic Interference) by providing a low impedance filter that filters out undesirable electrical signals from reaching the ICs downstream. Furthermore, it provides output voltage stability and circuit performance consistency by regulating the current into the power converter.

In conclusion, the T520D157M006ATE015 tantalum - polymer capacitor is an efficient power supply component with a wide range of applications in digital circuits. The high capacitance and low size with a stable performance and high temperature autonomy, makes it an ideal choice for a wide range of circuit and device applications. Its main function is to provide high frequency power management and filtering, while its noise reduction capability reduces the impact of EMI on the device.

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