Tantalum Capacitors

A tantalum capacitor is a type of electrolytic capacitor, a component of electronic circuits. It is constructed of two very thin metal layers, separated by an oxide layer which acts as an insulator. The tantalum metal acts as a kind of reservoir for the electrolyte. The oxide layer is often already formed and acts as a separation layer between the two metals. The bottom metal is called the cathode and the top metal is called the anode.

The M39003/01-7018/TR is an example of such a capacitor. It is used in a variety of different applications, but is most commonly used in portable electronic devices such as mobile phones, laptops, cameras and PDAs. It is also used in automotive, military and aerospace applications. The M39003/01-7018/TR is a two-terminal, polarized capacitor. It has three different capacitance values: 0.047μF, 0.068μF and 0.1μF.

Application Field

The M39003/01-7018/TR tantalum capacitor is primarily used in low-current applications, such as signal filtering and bypassing in audio and video systems. It is also used in power supply circuits for modems, consumer goods and communication systems. The M39003/01-7018/TR can also be used in switching circuits, such as capacitive filters, bandpass filters and so on. It is also used for protection in supply lines and power supplies.

Working Principle

Tantalum capacitors work on the principle of electrophoresis, which is the movement of ions or grouped charged particles in an electric field. The electric field creates a current in the electrolyte, a liquid which acts as an electrical conductor between the two metal layers. This current draws positively charged ions from the anode and negatively charged ions from the cathode and deposits them onto the underlying metal layer. This creates an electric field between the two layers, which stores the electrical energy.

The M39003/01-7018/TR tantalum capacitor is constructed of a sintered, high-temperature anode substrate, a tantalum electrolytic anode, a dielectric layer, a tantalum electrolytic cathode and a silvered cathode substrate. The anode and cathode are both connected to terminal pins. When the capacitor is charged, positive ions travel from the anode to the cathode, leaving behind a negative charge on the anode. The negative charge creates an electric field which stores energy.

Conclusion

Tantalum capacitors, such as the M39003/01-7018/TR, have a wide range of applications in a variety of electronic devices and circuits. They are used in low-current applications, such as signal filtering and bypassing, and also in switching circuits. They work on the principle of electrophoresis, which is the movement of ions in an electric field. This creates an electric field between the two metal layers, which stores the electrical energy and can be used by an electrical circuit.