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Tantalum Capacitors

Tantalum capacitors, also known as tantalum electrolytic capacitors, are polarised electrochemical capacitors. They are one of the “mainstay” types of capacitor design and are used in most types of electronics for decoupling, smoothing and power supply filtering applications. They are made up of two metal electrodes separated by an electrolyte solution acting as a dielectric.

M39003/01-2749/TR Application Field and Working Principle

The M39003/01-2749/TR is a type of tantalum capacitor. This particular series is available in both molded and coated packages. It operates in temperatures ranging from -55 to +125 degrees Celsius and has a capacitance range from 1 to 68 uF and a voltage range from 4 to 50 Vdc. Its casing is made of molded plastic with solderable, end sealing, compliant pins.

These capacitors are widely used in a number of applications such as communications, consumer electronics, medical, military/aerospace and automotive electronics. They are particularly well suited for decoupling, filtering, and sample/hold functions in switching power supplies, audio amplifiers, radio receivers, and industrial circuits.

The M39003/01-2749/TR is made up of two electrodes. The anode is composed of a porous tantalum metal sheet which is known for its excellent conductivity properties. The cathode is made of a nickel-plated lead wire and a sintered nickel powder. The two electrodes are then filled with an organic electrolytic solution. When a voltage is applied, current flows, charging the capacitor\'s dielectric film and creating a positive charge on the anode.

The dielectric provides the dielectric constant governing the capacitance that is equal to the ratio of the voltage applied across the terminals to the charge stored between them. The anode will then be saturated with positive charges and electrons will flow back to the cathode from the anode. This will create an electrostatic field in the capacitor which acts as a storage device capable of releasing a current when the capacitor is discharged.

The M39003/01-2749/TR offers a wide range of benefits. It has low ESR and a low equivalent series inductance, making it ideal for use in high frequency applications. Its low parasitic inductance allows for faster switching and signal propagation, while its low ESR helps in reducing the peak ripple voltage during operations. Its compact design enables it to be used in applications requiring small space while its long shelf life avoids the need for frequent replacements.

Conclusion

The M39003/01-2749/TR is a series of tantalum capacitors. It is available in a variety of sizes with a voltage rating up to 50 Vdc and a capacitance ranging from 1 to 68 uF. It offers the benefits of a low equivalent series inductance, low ESR, low parasitic inductance, fast switching, and a long shelf life. It is widely used in a variety of industrial, automotive, and consumer applications.

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