Metal Oxide Film Resistors
Description
The resistance range of metal oxide film resistors is from 1Ω to 200kΩ. These resistors are formed by the decomposition and deposition of hydrolyzable metal salt solutions (such as tin tetrachloride and antimony trichloride) on the surface of heated glass or ceramics. With varying manufacturing conditions, the performance of these resistors can differ significantly.
The main characteristics of these resistors include high-temperature resistance, with an operating temperature range of +140 to 235°C, allowing for overload use in short durations. The temperature coefficient of resistance is ±3×10⁻⁴/°C, and they exhibit good chemical stability. However, the resistivity of these resistors is relatively low, and the resistance value of small power resistors does not exceed 100 kilohms, which limits their application range.