Metal Oxide Film Resistor

- the metal oxide film resistor was the first major alternative to the carbon composition used up until the early 1960s.

Metal-oxide film resistors were widely used as the first real alternative to carbon composition resistors that were traditionally used.

The metal oxide film resistor provided a significant improvement in performance over the carbon resistors with higher degrees of stability, accuracy, and much lower levels of noise for which the carbon resistors were renowned.

Metal oxide film resistors

Metal oxide film resistors are manufactured as fixed leaded resistors.

They are use a ceramic rod as the base for the resistor. This is coated with a thin film of a conductive metal oxide - one popular material is tin oxide.

Comparison of metal oxide film resistors with metal film

The metal oxide film resistor is widely used and is often has similar properties to the metal film resistor. To gain an appreciation of when the metal oxide film resistor should be used a comparison chart is included below.


Comparison of Metal Oxide Film Resistor
Parameter Metal Oxide Film Metal Film
Maximum operating temperature 450°C 250 - 300°C
Temperature coefficient Poor ~300ppm/°C Better
Low resistance values Poor properties, including tolerance Better performance
Noise properties Similar to carbon film Better than Metal oxide film

By Ian Poole


<< Previous   |   Next >>


Share this page


Want more like this? Register for our newsletter












Perpetual Motion Machines - Always Giving 110% Mark Patrick | Mouser Electronics
Perpetual Motion Machines - Always Giving 110%
The perpetual motion machine is something that has been sought by inventors from the very earliest days of science . . . . but does the concept have links to the IIoT?
Whitepapers
R&S Higher Order MIMO Testing
Rohde & Schwarz presents this authoritative whitepaper on higher order MIMO testing.

More whitepapers










Radio-Electronics.com is operated and owned by Adrio Communications Ltd and edited by Ian Poole. All information is © Adrio Communications Ltd and may not be copied except for individual personal use. This includes copying material in whatever form into website pages. While every effort is made to ensure the accuracy of the information on Radio-Electronics.com, no liability is accepted for any consequences of using it. This site uses cookies. By using this site, these terms including the use of cookies are accepted. More explanation can be found in our Privacy Policy