Caddock USF271 Series

Caddock USF271 Series
The USF271 series from Caddock are ultra-stable low temperature coefficient (TCR) film resistors, with a resistance range of between 9.9MΩ and 10MΩ, low TCR of ±2 ppm/°C and with a tolerance of ±0.01% or ±0.1%. The USF271 are constructed with two selected USF300 series resistors bonded back to back for parallel connection on the PCB and using a ceramic package provides cool operation. Utilising Caddock proprietary resistance film systems, they provide the Lowest TCR and the highest voltage ratings available in the industry.
  • Ultra-stable radial leaded film through-hole resistors
  • Resistance values available are between 9.9MΩ and 10MΩ
  • TCR of ±2 ppm/°C
  • Tolerance of ±0.01% or ±0.1%
  • Operating temperature -40°C to +85°C
  • Maximum working voltage of 2,500V
  • Ceramic package provides cool operation.
  • Maximum power rating of 0.75W at +85°C
  • Utilising Caddock's proprietary resistance film systems

The USF Ultra-Stable Resistors are offered in standard resistance values that are most commonly used in precision analog design and can be used in

  • Precise amplifier gain setting
  • Precise resistor bridge circuits
  • Precise transducer sense circuits
  • Precise voltage dividers with up to 2500 volt input voltage

The below table gives the specifications available for the complete USF series including the USF271 model:

Caddock USF271 series Specifications
Specifications
Additional Features
  • Ultra-stable radial leaded film through-hole resistors
  • Constructed with two selected USF300 series resistors bonded back to back for parallel connection on the PCB
  • Maximum working voltage of 2.5kV
  • Ceramic package provides cool operation
  • Utilising Caddock's proprietary resistance film systems
  • Available in standard resistance values most commonly used in precision analog design
  • Zero nominal TCR
  • Operating temperature range from -40°C up to +85°C
Maximum Power Rating
  • 0.75W (at +85°C)
Maximum Resistance
  • 10MΩ
Minimum Resistance
  • 9.9MΩ
TCR
  • ±2 ppm/°C
Tolerance
  • ±0.01%
  • ±0.1%

This product is available fully compliant to the RoHS EU directive 2011/65/EU.

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  • Product Code: Caddock USF271 Series
  • SKU: Caddock USF271 Series
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Available Options

Tags: SFF271 - 9.90 Meg - 0.01% - 2 ppm, SFF271 - 9.99 Meg - 0.01% - 2 ppm, SFF271 - 10.00 Meg - 0.01% - 2 ppm, SFF271-9.90Meg-0.01%-2 ppm, SFF271-9.99 Meg-0.01%-2 ppm, SFF271-10.0Meg-0.01%-2 ppm, SFF271-9.90Meg-0.10%-2ppm, SFF271-9.99Meg-0.10%-2ppm, SFF270-10.00Meg-0.10%-2ppm, SFF271 - 9.90 Meg - 0.10% - 2 ppm, SFF271 - 9.99 Meg - 0.10% - 2 ppm, SFF270 - 10.00 Meg - 0.10% -2 ppm