On the other hand, thick film is preferred for applications where these high requirements are not critical since prices are much lower. Advantages of thick over thin technology are not only lower cost, but also the ability to handle more power, provide a wider range of resistance values and withstand high surge conditions. Often an alloy of Nickel and Chromium is used (Nichrome). The paste is a mixture of glass and metal oxides. Request data sheets for the ATP Thin Film Resistors and Multi-Tap Networks. This process allows the same high values of a Thick Film product but yields better specifications for stability. An epoxy layer is screened onto the element to protect it from moisture and other contaminants. Thin film is more accurate, has a better temperature coefficient and is more stable.

Thick film is more resistant to moisture, since they are glass like. This means that the resistive layers are added sequentially to the substrate to create the conducting patterns and resistance values. Once in place, this layer is then subjected to a photo or laser etching process. In the table below the main differences between the two technologies are listed. Thick Films: Properties, Technology and Applications (Materials Science and Technologies: Electrical Engineering Developments), Michael I. Panzini (Nova Science Pub Inc), Handbook of Thin Film Deposition, Third Edition by Krishna Seshan (Elsevier), Abrasive or Laser, for complex patterns photo etching. Thin film resistors have a metallic film that is vacuum deposited on an insulating substrate. Typical examples where thin film is used are medical equipment, audio installations, precision controls and measurement devices. The resistive layer is printed onto a substrate at 850°C.

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The substrate is often 95% alumina ceramic. Vishay Dale Thin Film technology employs photolithographic precision patterning to give designers a wide range of resistance values in the smallest possible area.

The SMD chip based design is offered in the popular 0805 size. Unlike thin film, this process is additive. Preferred solution if performance requirements are low. Metal film resistors have a thin metal layer as resistive element on a non-conducting body. The temperature coefficient typically ranges from 50 ppm to 200 ppm/K. The layer is dense and uniform, which makes is suitable to trim the resistance value by a subtractive process. The binder is a glassy frit and the carrier exists of organic solvent systems and plasticizers. All rights reserved. Thin Film resistors are known for stability and tight tolerances. Inductance and capacitance are generally lower. Published July 22, 2020. High precision: Measuring or monitoring equipment, medical or audio applications, precision controls. These highly reliable, temperature-stable Tantalum Nitride thin film resistors can be used for an assortment of applications. (Privacy Policy). Precision test equipment and constant current source circuits benefit from Thin Film resistor construction technology. Thin film has a thickness in the order of 0.1 micrometer or smaller, while thick film is around thousands time thicker. Site Map | However, inductance may be high if thin film is executed with a cylindrical shape that is spiral cut. They are amongst the most common types of axial resistors. Thin film is more accurate, has a better temperature coefficient and is more stable. The resistive material is a special paste with a mixture of a binder, a carrier, and the metal oxides to be deposited. It therefore competes with other technologies that feature high precision, such as wirewound or bulk metal foil.

With photo etching or by laser trimming patterns are created to increase the resistive path and to calibrate the resistance value.

The parasitic inductance of thin film can be higher if it is executed as a cylindrical helix (metal film resistor).

Other film type resistors are carbon film and thick and thin film resistors. For a quarter of a century, ATP has offered thin film resistors as an integrated solution for RF hybrids and Optical carriers. Providing your email address will ensure a quick response. They are produced with different layer thicknesses to accommodate a range of resistance values. Please use this form to request your data sheets. Thin film features lower parasitic inductance and capacitance.

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