USF300 Ultra-Stable Low TC Film Resistors

Caddock USF300 Ultra-Stable Low TC Film Resistors were developed for high-performance analog electronics. Utilizing Caddock proprietary resistance film systems, the Type USF300 resistors provide the lowest TC with a wide resistance range and high voltage ratings.The 300 series boasts a resistance range of 50Ω to 25MΩ with temperature coefficients from -40°C to +85°C (referenced to +25°C), and Zero Nominal TC (maximum absolute TC 5ppm/°C). The resistors' tolerance is ±0.01% or ±0.10%. The USF resistors are constructed with an aluminum oxide ceramic sandwich that provides great thermal conductivity and minimizes the power coefficient drift.

Results: 35
Select Image Part #
 Mfr.
Description Datasheet Availability Pricing (USD) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Series
Resistance
Power Rating
Tolerance
Temperature Coefficient
Minimum Operating Temperature
Maximum Operating Temperature
Voltage Rating
Length
Termination Style
Packaging
Product
Type
Caddock Metal Film Resistors - Through Hole 10M ohm 0.01% 5ppm
Datasheet
356In Stock
Min.: 1
Mult.: 1

USF300 10 MOhms 750 mW (3/4 W) 0.01 % 5 PPM / C - 40 C + 85 C 1.4 kV 38.1 mm Radial Bulk Precision Metal Film Resistors Zero Nominal TC
Caddock Metal Film Resistors - Through Hole 100K ohm 0.01% 5ppm
Datasheet
199In Stock
Min.: 1
Mult.: 1

USF300 100 kOhms 330 mW (1/3 W) 0.01 % 5 PPM / C - 40 C + 85 C 300 V 19.05 mm Radial Bulk Precision Metal Film Resistors Zero Nominal TC
Caddock Metal Film Resistors - Through Hole
Datasheet
104In Stock
Min.: 1
Mult.: 1

USF300 200 kOhms 330 mW (1/3 W) 0.01 % 5 PPM / C - 40 C + 85 C 300 V 19.05 mm Radial Bulk Precision Metal Film Resistors Zero Nominal TC
Caddock Metal Film Resistors - Through Hole 10M ohm 0.01% 5ppm
Datasheet
257In Stock
Min.: 1
Mult.: 1

USF300 10 MOhms 330 mW (1/3 W) 0.01 % 5 PPM / C - 40 C + 85 C 300 V 19.05 mm Radial Bulk Precision Metal Film Resistors Zero Nominal TC
Caddock Metal Film Resistors - Through Hole
Datasheet
233In Stock
Min.: 1
Mult.: 1

USF300 20 MOhms 330 mW (1/3 W) 0.1 % 5 PPM / C - 40 C + 85 C 300 V 19.05 mm Radial Bulk Precision Metal Film Resistors Zero Nominal TC
Caddock Metal Film Resistors - Through Hole 5M ohm 0.01% 5ppm
Datasheet
67In Stock
Min.: 1
Mult.: 1

USF300 5 MOhms 750 mW (3/4 W) 0.01 % 5 PPM / C - 40 C + 85 C 1.4 kV 38.1 mm Radial Bulk Precision Metal Film Resistors Zero Nominal TC
Caddock Metal Film Resistors - Through Hole
Datasheet
50In Stock
Min.: 1
Mult.: 1

USF300 100 kOhms 330 mW (1/3 W) 0.1 % 5 PPM / C - 40 C + 85 C 300 V 19.05 mm Radial Bulk Precision Metal Film Resistors Zero Nominal TC
Caddock Metal Film Resistors - Through Hole 10K ohm 0.01% 5ppm
Datasheet
94In Stock
Min.: 1
Mult.: 1

USF300 10 kOhms 330 mW (1/3 W) 0.01 % 5 PPM / C - 40 C + 85 C 300 V 19.05 mm Radial Bulk Precision Metal Film Resistors Zero Nominal TC
Caddock Metal Film Resistors - Through Hole
Datasheet
3In Stock
Min.: 1
Mult.: 1

USF300 1 MOhms 330 mW (1/3 W) 0.1 % 5 PPM / C - 40 C + 85 C 300 V 19.05 mm Radial Bulk Precision Metal Film Resistors Zero Nominal TC
Caddock Metal Film Resistors - Through Hole
Datasheet
50In Stock
Min.: 1
Mult.: 1

USF300 20 kOhms 330 mW (1/3 W) 0.1 % 5 PPM / C - 40 C + 85 C 300 V 19.05 mm Radial Bulk Precision Metal Film Resistors Zero Nominal TC
Caddock Metal Film Resistors - Through Hole
Datasheet
11In Stock
Min.: 1
Mult.: 1

USF300 50 kOhms 330 mW (1/3 W) 0.1 % 5 PPM / C - 40 C + 85 C 300 V 19.05 mm Radial Bulk Precision Metal Film Resistors Zero Nominal TC
Caddock Metal Film Resistors - Through Hole
Datasheet
38In Stock
50Expected 14/10/2026
Min.: 1
Mult.: 1

USF300 5 MOhms 330 mW (1/3 W) 0.1 % 5 PPM / C - 40 C + 85 C 300 V 19.05 mm Radial Bulk Precision Metal Film Resistors Zero Nominal TC
Caddock Metal Film Resistors - Through Hole
Datasheet
35In Stock
Min.: 1
Mult.: 1

USF300 2 MOhms 330 mW (1/3 W) 0.01 % 5 PPM / C - 40 C + 85 C 300 V 19.05 mm Radial Bulk Precision Metal Film Resistors Zero Nominal TC
Caddock Metal Film Resistors - Through Hole
Datasheet
28In Stock
Min.: 1
Mult.: 1

USF300 20 kOhms 330 mW (1/3 W) 0.01 % 5 PPM / C - 40 C + 85 C 300 V 19.05 mm Radial Bulk Precision Metal Film Resistors Zero Nominal TC
Caddock Metal Film Resistors - Through Hole
Datasheet
31In Stock
100Expected 14/08/2026
Min.: 1
Mult.: 1

USF300 20 MOhms 330 mW (1/3 W) 0.01 % 5 PPM / C - 40 C + 85 C 300 V 19.05 mm Radial Bulk Precision Metal Film Resistors Zero Nominal TC
Caddock Metal Film Resistors - Through Hole
Datasheet
61In Stock
Min.: 1
Mult.: 1

USF300 5 MOhms 330 mW (1/3 W) 0.01 % 5 PPM / C - 40 C + 85 C 300 V 19.05 mm Radial Bulk Precision Metal Film Resistors Zero Nominal TC
Caddock Metal Film Resistors - Through Hole
Datasheet
46In Stock
Min.: 1
Mult.: 1

USF300 50 kOhms 330 mW (1/3 W) 0.01 % 5 PPM / C - 40 C + 85 C 300 V 19.05 mm Radial Bulk Precision Metal Film Resistors Zero Nominal TC
Caddock Metal Film Resistors - Through Hole
Datasheet
17In Stock
150Expected 11/08/2026
Min.: 1
Mult.: 1

USF300 500 kOhms 330 mW (1/3 W) 0.01 % 5 PPM / C - 40 C + 85 C 300 V 19.05 mm Radial Bulk Precision Metal Film Resistors Zero Nominal TC
Caddock Metal Film Resistors - Through Hole
Datasheet
9In Stock
450On Order
Min.: 1
Mult.: 1

USF300 10 MOhms 750 mW (3/4 W) 0.1 % 5 PPM / C - 40 C + 85 C 1.4 kV 38.1 mm Radial Bulk Precision Metal Film Resistors Zero Nominal TC
Caddock Metal Film Resistors - Through Hole 1M ohm 0.01% 5ppm
Datasheet
37In Stock
50Expected 12/10/2026
Min.: 1
Mult.: 1

USF300 1 MOhms 750 mW (3/4 W) 0.01 % 5 PPM / C - 40 C + 85 C 1.4 kV 38.1 mm Radial Bulk Precision Metal Film Resistors Zero Nominal TC
Caddock Metal Film Resistors - Through Hole
Datasheet
2In Stock
50Expected 23/09/2026
Min.: 1
Mult.: 1

USF300 1 MOhms 750 mW (3/4 W) 0.1 % 5 PPM / C - 40 C + 85 C 1.4 kV 38.1 mm Radial Bulk Precision Metal Film Resistors Zero Nominal TC
Caddock Metal Film Resistors - Through Hole
Datasheet
450On Order
Min.: 1
Mult.: 1

USF300 10 MOhms 330 mW (1/3 W) 0.1 % 5 PPM / C - 40 C + 85 C 300 V 19.05 mm Radial Bulk Precision Metal Film Resistors Zero Nominal TC
Caddock Metal Film Resistors - Through Hole 1M ohm 0.01% 5ppm
Datasheet
148Expected 16/10/2026
Min.: 1
Mult.: 1

USF300 1 MOhms 330 mW (1/3 W) 0.01 % 5 PPM / C - 40 C + 85 C 300 V 19.05 mm Radial Bulk Precision Metal Film Resistors Zero Nominal TC
Caddock Metal Film Resistors - Through Hole 2M ohm 0.01% 5ppm
Datasheet
Lead-Time 18 Weeks
Min.: 1
Mult.: 1

USF300 2 MOhms 750 mW (3/4 W) 0.01 % 5 PPM / C - 40 C + 85 C 1.4 kV 38.1 mm Radial Bulk Precision Metal Film Resistors Zero Nominal TC
Caddock Metal Film Resistors - Through Hole 20M ohm 0.01% 5ppm
Datasheet
38Expected 06/08/2026
Min.: 1
Mult.: 1

USF300 20 MOhms 750 mW (3/4 W) 0.01 % 5 PPM / C - 40 C + 85 C 2.5 kV 38.1 mm Radial Bulk Precision Metal Film Resistors Zero Nominal TC