What is a thin film resistor?
thin film resistor is a resistor, a common electronic component, which is made by vacuum deposition methods for the placement of resistance material on the substrate. It is distinguished from dense film resistors not by material or functions, but by production. This technical definition is better understood in parts.
The resistance refers to an element in electronics architecture that prevents the flow of electricity. Increasing the resistance value will require an increase in the applied voltage to maintain constant electric current. Mathematically it is the value of the R in Ohm's law, which concerns current (I) and voltage (V) - shown by the formula v = I/R - or in another version, expresses the relationship of force (p) to voltage - as in the formula p = v2/r. By allowing changes to voltage or current, the resistance is part of the "language" of the electronics that allows the evaluation of mathematical expressions. The material to be used as a resistor called resistance material is launched by application of electric tePLA and then condensed on the surface. Second, in the "spraying" ions from the gas impact of plasma and stimulate the molecules of resistance material. These molecules are released from the material and the substrate.
The first method can be visualized as a spray color, direct application of material. The second can be considered as spraying from the bike passing through the mud pool, the indirect application of the material. In both cases, a layer of resistance material is so thin that only a few atoms or molecules are deep. By performing the process in the vacuum, a uniform layer is achieved and prevents contaminants or undesirable chemical reactions.
The materials from which the Istory resmezi include compounds of tantalum, bismuth and ruthenia, as well as chrome, nickel and lead. There are thousands of possible compounds, including newer organic mixtures. The thin film resistor is more expensive than other types, but also has stricter tolerances. These resistors are usually usedThey are in more demanding applications such as high -frequency communication and computer technology.
As well as their strong film cousins, thin films can be cropped to increase the accuracy of their evaluation. Resistors are cropped with slightly excessive determination of the required material. Then you cut computer -controlled lasers into the material until the required resistance value is achieved. The Refinement of Laser Trimming an Alfurate Thin Film Resistor is an Indication of the Very Tight Tolerances Required by Today's Small, Fast, Powerful and Lower-Heat-Production Electronic Devices.