vékonyfilmellenállások

Thin-film resistors are a type of resistor fabricated by depositing a thin layer of resistive material onto an insulating substrate. This resistive layer is typically a metal or a metal alloy, such as nickel-chromium (nichrome), tantalum nitride, or ruthenium dioxide, applied using techniques like sputtering or evaporation. The resistive element is then patterned into a specific shape, often a serpentine or spiral track, to achieve the desired resistance value. The overall resistance depends on the resistivity of the film material, its thickness, and the geometry of the patterned track.

These resistors are manufactured with high precision and offer excellent stability over time and temperature variations. They are known for their low parasitic inductance and capacitance, making them suitable for high-frequency applications. Thin-film resistors are commonly used in integrated circuits (ICs) and complex electronic assemblies where miniaturization and performance are critical. Their fabrication process allows for precise control over resistance values and tight tolerances, often in the parts-per-million range. They are distinct from thicker film resistors, which use a more robust paste applied to the substrate and then fired. The thin-film approach results in superior electrical characteristics but can be more costly to produce for very high resistance values or power ratings.