Film Resistor is an electronic component consisting of a mixture of ceramic, carbon, and/or metal, applied to a cylindrical form in a thin layer to obtain a desired value of resistance. The cylindrical form is made of an insulating substance, such as porcelain. The film can be deposited on this form by various methods, and the value tailored as desired. Metal-film units can be made to have nearly exact values. Film type resistors usually have low to medium-high resistance. A major advantage of film-type resistors is that they, like carbon-composition units, do not have much inductance or capacitance. A disadvantage, in some applications, is that they cannot handle as much power as the more massive carbon-composition units, or as wirewound types. It is also called carbon-film resistor or metal-film resistor.
Compare CARBON-COMPOSITION RESISTOR, WIREWOUND RESISTOR.
See also, Variable Resistor, Carbon Resistor, Grid Resistor, Dropping Resistor