M39003/03-4026H

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Tantalum capacitors are a type of electrolytic capacitors that are widely used, especially in high-density, surface-mount electronic circuitry, due to their robustness, low size, and higher capacitance values per unit volume. The device consists of two electrodes, the anode and the cathode, separated by an electrolytic solution, typically aqueous. The anode, made of tantalum, is typically in the form of a plate or slug, while the cathode is typically made of manganese dioxide. The anode is then surrounded by the electrolyte, typically an aqueous solution, with a dielectric layer between them, dielectric being the material that affects the capacitance. The dielectric layer also adds to the robustness of the device, along with the metal layer of the anode that adds further protection.

The M39003/03-4026H is a type of tantalum capacitors used in high-density, low voltage applications, such as the majority of consumer electronics. It is notable for its small size and high capacitance values compared to other types of capacitors. Despite its small size, the M39003/03-4026H exhibits excellent electrical characteristics, with a high pulse frequency of 42 MHz at-1dB and a high signal/noise ratio of 64dB. Additionally, its voltage coefficient is 0.2mV/K and its working voltage is 2.7V.

The working principle behind the M39003/03-4026H, and other types of tantalum capacitors, is the principle of electrolytic action. The metal plate or ‘anode’ of the tantalum capacitor is surrounded by a layer of electrolyte, typically aqueous in nature, and is separated from the cathode material, typically manganese dioxide. This creates a barrier between the two materials, the dielectric layer. When an electric current is applied to the capacitor an electric field is created across the dielectric layer, which causes a charge to be stored in this layer, thus forming a capacitor.

In general, tantalum capacitors are robust and relatively low-cost. They are widely used especially in high-density consumer electronics due to their small size and relatively high capacitance values compared to other types of capacitors. The M39003/03-4026H is an excellent choice for high-density, low voltage applications due to its small size, high pulse frequency, signal/noise ratio, and working voltage.

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