T140D686K035AS

Tantalum capacitors are components broadly used across a wide array of industry-grade applications. One such component is the T140D686K035AS, a tantalum capacitor boasting capacitance values of 6.8 μF. This article explains the application field and working principle of such components, outlining their benefits and advantages.

Tantalum capacitors are a type of low-profile electrical component used to store electrical charges. Such components are designed to be used in surface-mount applications, with their dimensions highly customized to the demands of their particular purpose. They possess a high capacitance per unit area when compared to other capacitors, with their small form factor allowing them to be integrated into a variety of systems with ease.

The T140D686K035AS is a small, surface-mount tantalum capacitor with a capacitance value of 6.8μF. It has a reverse voltage rating of 35V and is used for a wide range of electrical and electronic applications. In order to provide the desired characteristics, it employs a tantalum anode and solid manganese dioxide electrolyte forming the dielectric layer.

The T140D686K035AS capacitor is most commonly used in high-density integrated circuits and related PCB boards, particularly in high-voltage and low-impedance applications. It is used to decrease thermal resistance in integrated circuits and reduce leakage currents, as well as to provide more efficient power and signal line decoupling. In communication systems, it can be used to reduce transients that can cause data problems, while serving as an electrolytic filter for noise suppression in the signal transmissions.

The working principle of a T140D686K035AS capacitor is relatively simple. The anode is connected to a positive voltage terminal, while the cathode is connected to a negative voltage terminal. The dielectric layer lies between the two electrodes. When a potential difference is applied across the terminals, an electric field is generated within the dielectric layer. The field causes the dissociation of positive ions to accumulate on the anode, causing positive charge. As a result, the capacitor achieves a state of equilibrium where the accumulation of positive charge creates an opposite negative charge.

The T140D686K035AS capacitor — and tantalum capacitors in general — offer a range of advantages over other capacitor types. These include their relatively low cost, small size, high capacitance per unit volume, and high precision. Additionally, they boast excellent environmental stability, meaning they can perform very reliably over long periods of time even in extreme conditions.