USF Ultra-Stable Low TC Film Resistors Caddock USF Ultra-Stable Low Temperature Coefficient (TC) Film Resistors are designed to provide a low TC with a wide resistance range and high voltage ratings. These resistors are available in a resistance range of 50Ω to 25MΩ. The USF film resistors feature a tolerance of ±0.01% or ±0.1%, extremely low power coefficient, zero nominal TC, and -40°C to 85°C operating temperature range. These film resistors are constructed with an aluminum oxide ceramic sandwich that provides great thermal conductivity. The USF resistors can be used in precise amplifier gain settings, precise resistor bridge circuits, precise transducers, and voltage dividers with up to 2500V input voltage.