M39003/01-7069/HSD

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Tantalum Capacitors

A tantalum capacitor is an electrolytic capacitor, which uses a tantalum metal as the anode material. It consists of two plates which are a tantalum anode with an oxide layer and a cathode made of conductive electrolyte. The anode gets electrically charged during operation and this charge is maintained by the addition of small amount of oxide ions. The oxide layer gives tantalum capacitors a high capacitance for a given physical size. This makes them ideal for use in applications where a small footprint is desirable, such as high density circuit board designs.

M39003/01-7069/HSD application field and working principle

The M39003/01-7069/HSD is a wet slug type tantalum chip capacitor and has its main field of application in automotive and industrial electronics. The wet slug type capacitor has an anode made of solid sintered tantalum, with a passivated coating, and a cathode of conductive electrolytic polymer. It is usually applied in AC circuits to decouple harmonic frequencies. The working principle of such tantalum capacitors is fairly simple: when a voltage is applied, the anode will take up an amount of charge proportionally to its capacitance, therefore the anode will create an opposing electric field so that the current flowing through it will be reduced. This is described as the capacitor’s impedance – it enables the capacitor to reduce the amount of current flow until the capacitor reaches its full capacitance. At that point, the capacitor becomes ‘charged’ and the current is reduced to nothing.

The M39003/01-7069/HSD tantalum capacitor features a small footprint due its low profile and automatically adjustable capacitance over the entire temperature range up to 125 °C due to its high-vacuum construction. Other features include high reliability, as the capacitor is equipped with a hermetically hollow seal, low DC leakage, and a high equivalent series resistance (ESR). All these features make it an ideal choice for automotive and industrial electronics.

One particular advantage of the M39003/01-7069/HSD is its high-temperature range. The capacitor is able to maintain its high capacitance without losing stability up to 125 °C, making it suitable for applications in harsh environments. Furthermore, its hermetically sealed construction helps to protect the anode from humidity and other environmental conditions.

In conclusion, the M39003/01-7069/HSD is an excellent choice for applications due to its wide range of features, including its small size, high temperature range and hermetically sealed construction. These factors make it suitable for critical uses, such as automotive and industrial electronics, where failure cannot be tolerated.

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