Caddock USF271 Series

  • Caddock

Product 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

Applications

Description

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

Weight 0.00000 kg
Dimensions 38.10 × 4.06 × 13.97 mm
Minimum Resistance

Maximum Resistance

Temperature Coefficient

Power Rating

Additional Features

Tolerance

,

RoHS Compliant Product – Caddock

This product is available fully compliant to the RoHS EU directive 2011/65/EU and 2015/863/EU

Caddock USF Series Technical Library

We are pleased to provide you with a range of additional content including videos, product datasheets, case studies, white papers and application notes for your reference. Please see below for the latest content available:

 

 

DOCUMENTATION
Caddock USF ultra-stable low TC ultra-precision film resistor series datasheet
Designing with Caddock TO-style heat sink mountable power film resistors application note (AEN-0101)
Understanding the power rating of Caddock MP9100 resistors application note (AEN-0102)
Application of the type CHR high resistance precision chip resistor products application note (AEN-0103)
Terminal finish and soldering process information for Caddock resistor products application note (AEN-0104)
Caddock resistor products and the RoHS directive application note (AEN-0105)
Customer applications that are outside the scope of the RoHS directive application note (AEN-0106)
Caddock REACH compliance statement application note (AEN-0107)
Recommended solder reflow profile for Caddock surface-mount resistors application note (AEN-0108)

Caddock USF271 Series

Quantity
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