M39003/01-7231H

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Tantalum capacitors are valued in many types of electrical applications due to their impressive technical characteristics. These capacitors provide high capacitance and low series resistance in a size that rivals other similar types of capacitors on the market. The M39003/01-7231H from Knowles is an excellent example of a tantalum capacitor, and its potential applications and working principles are detailed in this article.

General Specifications

The M39003/01-7231H is a polarized tantalum capacitor, meaning it has a positive and negative terminal. Individual units have a dielectric of tantalum, case type of molded, case material of molded, and a voltage rating of 25V. Its dimensions of 0.396" x 0.295" are relatively small compared to other similar capacitors. This makes the M39003/01-7231H suitable for high-density circuit board designs. With capacitance values of 47µF and 100µF at 21mΩ ESR ratings, the M39003/01-7231H has a useful temperature range of -55°C to +105°C.

Applications

The M39003/01-7231H is primarily used for decoupling purposes in automotive applications such as in alternator controllers and power steering systems. It is also used in many other types of consumer products, from cell phones and coffee makers to pacemakers and aircraft control systems. Due to its robust construction and low ESR ratings, the M39003/01-7231H is suitable for high-temperature environments and hostile climates.

Working Principle

The M39003/01-7231H is a polarized capacitor, meaning it contains an anode and a cathode. When a voltage is applied across the terminals, electrons flow from the anode to the cathode and then back in the opposite direction. This creates a current which flows between the two electrodes, which then causes electrical energy to be stored in the form of an electric field between the two metal plates. The capacitance of the capacitor is then determined by the size of the metal plates and the dielectric material used.

Conclusion

The M39003/01-7231H is an excellent example of a tantalum capacitor, and its uses and working principles make it highly sought after in a variety of electrical applications. With its low series resistance, high capacitance values, and small package size, the M39003/01-7231H is an ideal choice for high-density circuit board design and applications requiring a powerful, reliable capacitor.

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