vastagfilmellenállásoknál

Vastagfilmellenállások (thick-film resistors) are a type of electrical resistor manufactured by screen printing a resistive paste onto a ceramic substrate. This paste typically consists of a mixture of metal oxides, glass frit, and an organic binder. The resistive layer is then fired at high temperatures to sinter the materials and form a solid, conductive path. The thickness of this printed layer is generally greater than that of thin-film resistors, hence the name.

The value of the resistance is determined by the composition of the resistive paste, the dimensions of the printed track (length, width, and thickness), and the resistivity of the material itself. After printing and firing, a protective coating is applied, and the terminals are attached. These resistors are known for their robustness, relatively low cost, and ability to handle moderate power dissipation.

Vastagfilmellenállások are widely used in various electronic circuits due to their good performance-to-cost ratio. They are commonly found in power supplies, automotive electronics, industrial control systems, and consumer electronics. While they may not achieve the same high precision or stability as some thin-film resistors, their durability and cost-effectiveness make them a popular choice for many applications where extreme accuracy is not paramount. The manufacturing process allows for high-volume production, contributing to their widespread availability and affordability.