Yageo's anti-sulfurated chip resistors are designed specifically for use in environments exposed to high levels of contamination, such as: industrial control systems, sensors, electric instrumentation, and communication base stations.

The AF series is also suited for electronic appliances used in high concentrations of sulfur gas such as hot springs, and mines.

Features include a comprehensive resistance range of 1 Ω to 22 MΩ, a temperature coefficient of 100 ppm/°C, 200 ppm/°C , case size ranges from 0603 to 1206, rated power at 70°C of 1/16 W to 1/4 W, and an operating temperature range of -55°C to 155°C.