M39003/01-7239/TR

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Tantalum capacitors are widely used in various applications due to their superior performance and small size. They are particularly attractive to designers who need high capacitance densities, high dissipation factors, and low operating temperatures. The M39003/01-7239/TR is a popular tantalum capacitor used in many applications; it is characterized by a high temperature rating and low ESR (equivalent series resistance) performance. In this article, we will examine the application field of M39003/01-7239/TR, as well as its working principle.

Application Field

The M39003/01-7239/TR capacitor is a high-performance, axial lead device designed for higher power applications. It has a rated voltage of up to 50V, and a maximum capacitance of 22µF. It can be used in power supplies, DC-DC converters, switched-mode power supplies (SMPS) and other high-frequency applications. Additionally, it is suitable for automotive, aircraft, and military-grade power supply applications requiring high temperature operation, shock and vibration protection, and low ESR performance.

The M39003/01-7239/TR is designed for applications requiring an extended temperature range, high capacitance, and high ripple current capabilities. Its low ESR performance ensures minimal power losses, making it ideal for battery-powered systems. It can handle large transient currents and supply high amounts of ripple current. This makes it suitable for applications ranging from on-board logic power supplies to base-loaded transformers.

Working Principle

Tantalum capacitors are made from the element Tantalum, hence the name. They consist of a tantalum powder core, which is formed into a pellet, and sintered with an electrolytic solution that forms the dielectric layer. The dielectric layer is then coated in an insologic material, such as ceramic or epoxy. Two electrical contacts, one of which is the anode and the other the cathode, are attached to the surfaces of the dielectric layer. A metalized layer of conductive material, such as aluminum, is placed on the interior surface of the anode in order to improve the potential distribution of the device.

The working principle of a tantalum capacitor is based on the electrochemical reaction that occurs when current passes through the capacitor. When a positive voltage is applied to the anode, current flows into the anode and displaces electrons from the tantalum pellet, thus forming an electrostatic charge. This charge is stored in the body of the capacitor. When the anode voltage is reversed, current flows out of the anode and the electrostatic charge is released in the form of an electric field. This field produces a potential difference between the anode and cathode, which produces a capacitive current.

The value of the capacitance is determined by the size and geometry of the device. The number of electrons displaced from the anode increases with increasing current. This, in turn, increases the capacitance, allowing for higher energy storage and faster charge/discharge cycles. The higher energy storage capability of a tantalum capacitor is an important factor in the design of DC/DC converters and AC/DC power supplies.

The high-temperature rating and low ESR performance of M39003/01-7239/TR make it an ideal choice for applications that require high capacitance densities, ripple current capabilities, and shock and vibration protection. Additionally, its extended temperature range and low ESR performance make it suitable for use in automotive, aircraft, and military-grade power supplies.

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