M551B108M040AT

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Tantalum-Polymer capacitors are a subtype of tantalum capacitors that feature a solid electrolyte layer of conductive polymers in addition to the conventional tantalum electrode, forming an anode, cathode and electrolyte (gel) combination. This solid electrolyte layer minimizes the chance of contact corrosion, making the capacitors more reliable than regular tantalum capacitors.

The M551B108M040AT is a specific model of tantalum-polymer capacitor from the 0402 Metric family that comprises surface mountable, three-terminals, rectangular devices with a wide application range. Tantalum-polymer capacitors offer a combination of low resistance, high capacitance, and a low ESR. That makes them one of the best candidates for filtering applications, particularly for filtering at high frequencies where other types fail.

The M551B108M040AT offers a capacitance of 108mf and a maximum DC operating voltage of 10V. The general working principle is that when the capacitor is connected in a circuit, electrons move from one side to the other and a capacitive field is created that counters any changes in voltage. This reduces the potential difference between the two terminals, making it possible to store energy in the form of electric charge inside the capacitor. As a result of this displacement of electrons, the positive plate of the capacitor is filled with positive charge and the negative plate with negative charge.

Tantalum-polymer capacitors also have a high degree of resistance to temperature changes and long time stability as well as very low equivalent series resistance, making them extremely suitable for DC and pulse applications. Furthermore, they exhibit excellent performance even in extreme temperatures, being highly effective in temperatures as low as -55°C and up to +125°C. Owing to its various features, these capacitors have a wide array of applications such as in, laptop power supplies, DC/DC converters, instrumentation, medical equipment, automotive electronics and telecom modules.

These tantalum-polymer capacitors offer greater stability and improved performance characteristics than standard tantalum capacitors. The M551B108M040AT, for instance, ensures a very low equivalent series resistance and increases the reliability by eliminating potential contact corrosion. The solid electrolyte layer, along with its small size, makes it suitable for many high-frequency applications such as filtering. In addition, the superior high temperature and humidity performance of tantalum-polymer capacitors makes them an ideal choice for a wide range of applications, where a reliable and efficient performance is absolutely essential.

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