USFF 1206 Fuses Schurter USFF 1206 Fuses are Super-Quick-Acting fuses with a rated current range from 50mA to 250 mA and voltages up to 125VAC/ 63VDC. These fuses incorporate wire-bonding technology and enable stable, reliable operation of ambient temperatures from -55°C to +90°C. Schurter USFF 1206 fuses are ideal for the protection of sensors, mobile devices, semiconductor protection, and battery protection. These fuses are well-suited for the protection of smart metering systems. The USFF 1206 fuses are halogen-free, cURus certified, and RoHS compliant, and are an excellent choice for lead-free systems.