Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Tantalum Capacitors

Tantalum capacitors are a type of electrolytic capacitor, which uses the tantalum (Ta2O5) media as one of the two electrodes. They are primarily used in portable communication and computing electronic devices due to downsizing requirements. The other material used for the opposite electrode is the solid electrolyte of an oxide, which has a high dielectric constant or permittivity (Tanatalum Pentoxide in this case). The capacity of the M39003/03-0402H tantalum capacitor depends heavily on its size. In addition, its general use is limited to low-frequency operation of up to several hundred kHz and voltage levels of at most a few tens of volts.

Working Principle

The M39003/03-0402H tantalum capacitor is an electrolytic capacitor, and thus it works on the principle of an electrolytic anode-cathode polarisation. The anode of the tantalum capacitor is constructed with a sintered layer of pure tantalum. The anode, the layer of oxide, and the cathode of the capacitor form the electrochemical capacitor or capacitor element. The resulting capacitor functions by storing energy in the form of an electrochemical reaction between the electrodes of the capacitor. This electrochemical reaction occurs in two stages: when a bias voltage is applied to the capacitor, the positive charges on the cathode move towards the anode while at the same time, the negative charge from the cathode transfers to the anode. This process produces a polarization of the charges on the anode and cathode, thereby generating a capacitance.

Application Field

The M39003/03-0402H tantalum capacitor has several features that make it a favored choice over aluminum electrolytic capacitors in a wide variety of electronic devices. In general, this type of capacitor is best suited for low-voltage, low-power applications. Since its size is very small, it is able to provide high capacitance in a very small package, which makes it ideal for portable computing and communication devices where size is a constraint. This type of capacitor is also characterized by low equivalent series resistance and inductance, which make it suitable for high-frequency applications.

In addition to this, the M39003/03-0402H tantalum capacitor is highly reliable and has long shelf life. This makes it attractive for use in medical and critical military applications. Additionally, it is also highly suited for high temperature applications, as the dielectric of the capacitor is stable up to a temperature of 125°C. One of the major drawbacks of this type of electrolytic capacitor is its poor frequency response, which limits its use in high-frequency applications such as audio applications.

In conclusion, while the M39003/03-0402H tantalum capacitor is highly useful in low-voltage, low-power applications, its lack of high-frequency response makes it ill-suited for audio applications. It is best suited for applications which require long shelf life and high temperature operation.

The specific data is subject to PDF, and the above content is for reference