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.

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Dami RoHS ECAD Model Series
Resistance
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Maximum na Operating Temperature
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Caddock Metal Film Resistors - Through Hole
Datasheet
111May 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 100K ohm 0.01% 5ppm
Datasheet
207May 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 10M ohm 0.01% 5ppm
Datasheet
353May 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 10M ohm 0.01% 5ppm
Datasheet
266May 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
261May Stock
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
133May Stock
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
Datasheet
233May 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 1M ohm 0.01% 5ppm
Datasheet
66May Stock
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 5M ohm 0.01% 5ppm
Datasheet
67May 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 25M Ohm .01% 5ppm 3/4W
Datasheet
40May Stock
100Inaasahan 7/29/2026
Min.: 1
Mult.: 1

USF300 25 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
Caddock Metal Film Resistors - Through Hole
Datasheet
50May 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
105May 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
3May 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
50May 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
11May 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
38May Stock
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
35May 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
28May 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
29May Stock
100Inaasahan 8/14/2026
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
63May 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
46May 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
50May Stock
150Inaasahan 8/11/2026
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
12May Stock
450Inoorder
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
Datasheet
2May Stock
50Inaasahan 10/9/2026
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 2M ohm 0.01% 5ppm
Datasheet
6May Stock
50Inaasahan 8/14/2026
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