Maximum performance – minimum space
Patented tantalum capacitor powder
Maximum performance – minimum space: Patented tantalum capacitor powder
The primary driving industry for tantalum products including capacitors and SPT powder is the electronics industry, which accounts for about 50 % of overall tantalum consumption. Today’s smartphones, super-thin ultrabooks and media tablets have to include ever more features into increasingly smaller formats. Our tantalum and niobium capacitor powders make it possible to achieve the large internal surface area needed to manufacture high-performance capacitors. Extremely reliable, today’s tantalum capacitors store the maximum amount of electrical charge in a minimum amount of space.
Tantalum powder - the key to miniaturization
The trend toward miniaturization in the electronics industry is continuing unabated: smaller and smaller devices are expected to provide an ever-increasing level of performance with more and more functions. As a result, the capacitors used in these devices must achieve greater capacitance in smaller spaces. Tantalum capacitors are particularly well suited for this task: anodes made of pressed, sintered tantalum powder provide an extremely high degree of volumetric efficiency.
Sputtering is a process in which physical vapor deposition (PVD) is used to deposit a thin film onto a substrate. Due to the trend toward increasingly smaller and more powerful electronic devices, sputter targets are extremely important in the semiconductor industry. In order to maintain the signal propagation speed even in smaller transistor cells, because of its higher conductivity, copper replaced the aluminum that was previously used for the circuit paths in the chips. However, copper has a tendency to spread out over the silicon, which means that a boundary layer consisting of a material containing tantalum nitride must be deposited in between. Sputtering creates this layer. H.C. Starck produces high-purity, extremely fine tantalum for the required metallurgical applications. We are one of the leading suppliers of tantalum for sputter targets. These are primarily used in semiconductor applications for high-speed data processing and for storage solutions in the consumer electronics industry.
Manufacturers of optical lenses use tantalum or niobium oxides to improve the refractive index of their products allowing for thinner lens profiles. When tantalum or niobium pentoxide is added to the glass during the production of optical lenses, they are lighter and thinner and have outstanding optical properties required for example in cameras and special optical applications. The addition of tantalum and niobium pentoxide allows the desired glass properties, such as the refractive index or the color distribution. Tantalum makes optical surfaces anti-reflective and simultaneously increases scratch resistance.