Tantalum Capacitors

Tantalum capacitors are electronic components composed of tantalum as the anode, a metal oxide as the dielectric, and often solid manganese dioxide as the cathode. While they are similar in construction to aluminum electrolytic capacitors, tantalum capacitors have lower equivalent series resistance and higher capacitance-voltage ratings. Capacitance values for the input and output hold up power are typically between 1‐4.7µF, and their working voltage can range from 6V to 400V, depending on their structure.The 199D474X0035A1V1E3 is a type of tantalum capacitor, designed for high capacitance, long operating temperature range and low leakage current, with a capacitance rating of 4.7‐47µF, rated voltage of 10Vdc and working temperature range of -55 to +125°C. This makes it well-suited for applications where high voltage and long life are both essential, such as in fuel pumps, automotive ECUs, power supply units, medical equipment and test and measurement instruments.The principle of operation for these components is relatively similar to that of aluminum electrolytic capacitors. The dielectric is a chemically treated tantalum pentoxide (Ta2O5) element, deposited onto the anode (tantalum) substrate and then sealed into a metal can. When an alternating current is applied to the capacitor, the dielectric will create a barrier and separate the two electrodes, causing an electric field to be generated between them. This electric field produces capacitance, which is measured and expressed in terms of Farads.These capacitors tend to have a low ESR (equivalent series resistance) rating, enabling them to maintain a stable and reliable output. The 187D series of tantalum capacitors also feature a high capacitance rating, and so are typically used in circuits which demand a relatively large voltage spike across a short time period. They also feature a UL94V-0 casing which provides complete insulation, meaning they can be used in applications where the capacitor is exposed to harsh environments and extreme temperatures.In summary, the 199D474X0035A1V1E3 tantalum capacitor is a reliable and long-lasting component, providing a high capacitance rating and a low leakage current, as well as offering excellent insulation properties for use within demanding applications. It provides a highly efficient alternative to aluminum electrolytic capacitors and is suitable for use in a variety of industrial and consumer products.