Reasons to choose Ceramic Capacitors over Tantalum Capacitors

The extensive use of ceramics represents a milestone in the history of electronics. Tantalum capacitors are used in electronics because of high melting point, high capacitance and high density. It is corrosion resistant to most acids at different temperatures. All these unique features have made tantalum increasingly useful over the years, especially in nano electrical circuitry.

But the scarcity of tantalum powder has boosted the demand for alternate components. After using tantalum parts for many years, manufacturers suddenly wanted other alternate options. The development and research efforts lead to the improvement in engineering and production methods for ceramic capacitors. As a result, there were the surprising improvements in design combined with the inherent uniqueness of ceramics.

The design modifications led to numerous advantages, which includes low ESR (equivalent series resistance), non polarization, ease of placement and high voltage. The Low ESR is vital because it lets manufacturers to use lesser-value capacitors without corrupting performance. However, the more important fact is that the ceramic capacitors are very cost efficient. Customers realized that the design flexibility offered by ceramics is better than tantalum capacitors.

The designs of ceramic caps are easily adjustable, which allows the drop-in replacements in filtering, smoothing, decoupling and by-passing and applications. Ceramic caps can be easily customized in a cost-effective manner. However, it is not possible for tantalum because machining tantalum consumes lots of time and is expensive. The lead time dropped from 52 weeks for tantalum caps to eight weeks for ceramics.

Small capacitors can't attain the same capacitance as larger ones. They do need fewer raw materials. Reduced demand for raw material lessens the possibility of a material shortage which increases cost. As tantalum capacitors are much larger than the ceramic using ceramic caps can reduce equipment size and cost. Other benefit is that the electrode material nickel used to make ceramics is much easier to mine and find than tantalum.

The future of ceramic capacitors is very bright. As consumers gets attracted to more sophisticated products and smaller size, manufacturers are now giving importance to the size, design flexibility and cost of capacitors. Although tantalum is still a useful material, ceramics have established their mark in the market. 

Handling Instructions during Quartz Glass Machining

Like conventional glass, quartz glass does not contain soda or calcium oxide, instead it consists   pure silica. In an industrially produced quartz glass, a distinction is made between synthetic (fused silicon dioxide) and natural (fused quartz) origin. Industries generally manufacture primary materials with different concentrations of impurities in the ppm (parts per million) range.

Quartz glass is formed by melting quartz sand of excellent purity (Silicon Dioxide content of 99.97%) and then allowing the melt material to solidify and cool down. Semi-finished products made from quartz glass have many extraordinary properties.  This makes quartz glass best for high-quality goods and ideal for  a wide range of applications.

Instructions during Machining:

• To maximize service life: We can increase the life expectancy of quartz glass products by keeping them neat and clean. Even a smaller amount of impurity present on the surface of a product can cause the whole area to be devitrified when the product is heated. This also increases the devitrification of other areas and shortens the service life of product. Quartz glass products are mostly used for high-temperature operations and in processes where high purity is necessary. Therefore, while machining quartz glass, it is very important to handle the products in a clean working environment.

• To maintain a safe working environment: It is highly recommended that do not handle quartz glass products with uncovered hands. We should protect the glass products from dust and dirt during storage and keep them in plastic bags.

        

1)    Use a dust control device or wear a dust mask during slicing or/and grinding as dust particles will be created.

2)    Handle the products very carefully as they are made up of glass.