M39003/01-2891H

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Tantalum Capacitors

A tantalum capacitor is a type of capacitor that consists of a pellet of tantalum metal as an anode, covered by an insulating oxide layer and surrounded by a conductive material as the cathode. The tantalum capacitor was first developed in the 1930s and was used primarily in military and aerospace applications due to its higher temperature and voltage tolerance when compared to other types of capacitors.

The M39003/01-2891H is a type of tantalum capacitor that is especially designed for use in harsh environments. It is ruggedized and has excellent temperature and voltage stability, making it suitable for a wide range of applications. The M39003/01-2891H is a surface mount device with a wide range of capacitance values available from 0.1µF to 10µF. It has a rated voltage of 10V and a maximum rated dc leakage current of 10µA.

Application Field and Working Principle

The M39003/01-2891H is widely used in a variety of mission-critical systems such as radar, missiles, and military communication systems. It is particularly suited for applications that require robust temperature stability, low level of leakage current, and high levels of reliability. It is also popular in commercial applications such as audio equipment, automotive electronics, and medical equipment.

The working principle of the M39003/01-2891H is based on the electrochemical principle of electrolytic capacitors. In an electrolytic capacitor, the oxide layer of the tantalum pellet acts as an electrolyte and captures an electric charge between the anode and the cathode. When power is applied, the current through the cathode begins to form a charge on the pellet’s oxide layer, which increases the capacitance. As the current continues to flow, the charge accumulates and builds up an electrical field between the anode and the cathode. This creates a major drop in voltage across the capacitor and eventually reaches a steady state.

The major advantage of the M39003/01-2891H is its high stability. This is due to its low equivalent series resistance (ESR) and low equivalent series inductance (ESL). The ESR is a measure of the resistance of the internal components of the capacitor while the ESL is a measure of the inductance of the internal components. Both parameters are essential for high stability and long life, making the M39003/01-2891H a popular choice in mission-critical systems.

The M39003/01-2891H also has good temperature stability, making it suitable for a variety of harsh environments. It utilizes a robust construction and has a tight tolerance on its capacitance which ensures consistent performance in adverse temperature ranges. The capacitor also features a high ripple current rating, which is essential in applications that require frequent power cycles.

Overall, the M39003/01-2891H is a reliable and robust capacitor that is ideal for use in harsh environments. Its high stability, low ESR, and good temperature stability make it suitable for mission-critical applications, while its excellent ripple current rating makes it suitable for applications that require frequent power cycles.

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