M39003/03-0103

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Tantalum capacitors are modern versions of what have traditionally been called electrolytic capacitors. They are used in all types of electronic equipment and are widely used due to their high capacitance-to-spacing ratio, low ESR, high stability, robustness, and ease of use, and are available in both non-polar and polarized designs. The M39003/03-0103, which is a polarized tantalum capacitor, is typically used for the bypass of other components, negating the need for a large, bulky electrolytic capacitor, while providing good filtering and decoupling properties. Additionally, this type of capacitor is suitable for DC blocking, output coupling, and some power supply applications.

The physical characteristics of the M39003/03-0103 consist of a small cylindrical case with an axial leads terminated with insulated wire. The body consists of a manganese dioxide, tantalum powder, and polymer construction, with the majority of the part being made from manganese dioxide. The tantalum powder helps increase the capacitance of the component, while the polymer provides the insulation between the capacitor plates. The manganese dioxide serves as the cathode and is held between two porous anode plates which are composed of tantalum powder.

The M39003/03-0103 tantalum capacitor works by using electrolyte to fill the space between the anode and cathode. When the capacitor is connected to a voltage source, the electrolyte enables current to flow through the device. The current creates an electrostatic field between the anode and cathode, attracting and repelling ions (electrically charged atoms) from the electrolyte. This creates an electric field between the anode and cathode that stores energy and induces a charge on the capacitor\'s terminals. The capacitance of the M39003/03-0103 is determined primarily by its geometry and the dielectric material used.

The rated voltage of the M39003/03-0103 is 6.3V and it is not suggested to be used at higher voltages. The voltage across the capacitor will not exceed its rated voltage and safely keeps the device from fracturing during temperature extremes, such as extreme cold or hot temperatures. Additionally, the component’s temperature range should be limited to -40 to +125°C.

The advantages of the M39003/03-0103 compared to electrolytic capacitors are that it is much more reliable, has lower ESR, can tolerate a higher ripple current, and can operate at higher temperatures. The main disadvantage is that it is limited to 6.3V, which is significantly lower than other types of capacitors. Due to its wide use and ease of use, the M39003/03-0103 tantalum capacitor is one of the most popular types of capacitors available.

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