Precision Wirewound Resistors in Axial and Radial packages


Riedon's lower-cost alternative to foil resistors

Riedon’s precision resistors are designed for critical applications that require very accurate and stable resistance values. Precision resistors are normally specified when the wattage requirements are relatively low, and when high accuracy and stability are necessary. They are available in a subminiature series, the standard 100 series, and special low-reactance version for fast rise time applications.

These precision resistors are non-inductively wound on molded bobbins. The solderable and weldable leads are tinned copper. Internally, they are welded for highest precision and reliability. All precision resistors are aged to insure stability. A protective coating insulates the windings and protects the welds. The bobbin is encapsulated using a specially formulated epoxy so temperature expansion coefficients of all materials are closely matched.


Features
  • High TCR is available
  • Power rating to 2 W
  • Tolerance to +0.005%
  • Resistances to 6 MΩ
  • Matched resistance sets to +0.001% and 0.5 ppm/°C
  • Operating temperature -55 to 145°C
Applications
  • Temperature compensation in many instruments and transducers
  • Test instrumentation
  • Weighing scales
  • Calibration systems

0.175 Watt Axial Resistors

Manufacturer Part Number Description Available Quantity Datasheets
SM15-100RX RES 100 OHM 0.175W 0.01% AXIAL 35
SM15-100RB RES 100 OHM 0.175W 0.1% AXIAL 50
SM15-100KX RES 100K OHM 0.175W 0.01% AXIAL 44
SM15-100KB RES 100K OHM 0.175W 0.1% AXIAL 49
SM15-10KX RES 10K OHM 0.175W 0.01% AXIAL 39
SM15-10KB RES 10K OHM 0.175W 0.1% AXIAL 46
SM15-1KX RES 1K OHM 0.175W 0.01% AXIAL 50
SM15-1KB RES 1K OHM 0.175W 0.1% AXIAL 50
SM15-2K5X RES 2.5K OHM 0.175W 0.01% AXIAL 41
SM15-2K5B RES 2.5K OHM 0.175W 0.1% AXIAL 41
SM15-250RX RES 250 OHM 0.175W 0.01% AXIAL 59
SM15-250RB RES 250 OHM 0.175W 0.1% AXIAL 48
SM15-25KX RES 25K OHM 0.175W 0.01% AXIAL 45
SM15-25KB RES 25K OHM 0.175W 0.1% AXIAL 20
SM15-350RX RES 350 OHM 0.175W 0.01% AXIAL 37
SM15-350RB RES 350 OHM 0.175W 0.1% AXIAL 47
SM15-500RX RES 500 OHM 0.175W 0.01% AXIAL 25
SM15-500RB RES 500 OHM 0.175W 0.1% AXIAL 65
SM15-50KX RES 50K OHM 0.175W 0.01% AXIAL 40
SM15-50KB RES 50K OHM 0.175W 0.1% AXIAL 30
SM15-5KX RES 5K OHM 0.175W 0.01% AXIAL 41
SM15-5KB RES 5K OHM 0.175W 0.1% AXIAL 42

0.25 Watt Axial Resistors

Manufacturer Part Number Description Available Quantity Datasheets
101-100RX RES 100 OHM 1/4W 0.01% AXIAL 21
101-100RB RES 100 OHM 1/4W 0.1% AXIAL 50
101-100KX RES 100K OHM 1/4W 0.01% AXIAL 11
101-10KX RES 10K OHM 1/4W 0.01% AXIAL 38
101-10KB RES 10K OHM 1/4W 0.1% AXIAL 48
101-1KX RES 1K OHM 1/4W 0.01% AXIAL 59
101-1KB RES 1K OHM 1/4W 0.1% AXIAL 24
101-2K5X RES 2.5K OHM 1/4W 0.01% AXIAL 38
101-2K5B RES 2.5K OHM 1/4W 0.1% AXIAL 0
101-250RX RES 250 OHM 1/4W 0.01% AXIAL 35
101-250RB RES 250 OHM 1/4W 0.1% AXIAL 71
101-25KX RES 25K OHM 1/4W 0.01% AXIAL 11
101-25KB RES 25K OHM 1/4W 0.1% AXIAL 24
101-350RX RES 350 OHM 1/4W 0.01% AXIAL 39
101-350RB RES 350 OHM 1/4W 0.1% AXIAL 51
101-500RX RES 500 OHM 1/4W 0.01% AXIAL 7
101-500RB RES 500 OHM 1/4W 0.1% AXIAL 386
101-50KX RES 50K OHM 1/4W 0.01% AXIAL 72
101-50KB RES 50K OHM 1/4W 0.1% AXIAL 28
101-5KX RES 5K OHM 1/4W 0.01% AXIAL 365
101-5KB RES 5K OHM 1/4W 0.1% AXIAL 38

0.30 Watt Radial Resistors

Manufacturer Part Number Description Available Quantity Datasheets
SM10-100RX RES 100 OHM 0.3W 0.01% RADIAL 23
SM10-100RB RES 100 OHM 0.3W 0.1% RADIAL 50
SM10-100KX RES 100K OHM 0.3W 0.01% RADIAL 54
SM10-10KX RES 10K OHM 0.3W 0.01% RADIAL 40
SM10-10KB RES 10K OHM 0.3W 0.1% RADIAL 0
SM10-1KX RES 1K OHM 0.3W 0.01% RADIAL 27
SM10-1KB RES 1K OHM 0.3W 0.1% RADIAL 48
SM10-2K5X RES 2.5K OHM 0.3W 0.01% RADIAL 40
SM10-2K5B RES 2.5K OHM 0.3W 0.1% RADIAL 50
SM10-250RX RES 250 OHM 0.3W 0.01% RADIAL 0
SM10-250RB RES 250 OHM 0.3W 0.1% RADIAL 0
SM10-25KX RES 25K OHM 0.3W 0.01% RADIAL 49
SM10-25KB RES 25K OHM 0.3W 0.1% RADIAL 50
SM10-350RX RES 350 OHM 0.3W 0.01% RADIAL 38
SM10-350RB RES 350 OHM 0.3W 0.1% RADIAL 32
SM10-500RX RES 500 OHM 0.3W 0.01% RADIAL 105
SM10-500RB RES 500 OHM 0.3W 0.1% RADIAL 41
SM10-50KX RES 50K OHM 0.3W 0.01% RADIAL 38
SM10-50KB RES 50K OHM 0.3W 0.1% RADIAL 42
SM10-5KX RES 5K OHM 0.3W 0.01% RADIAL 45
SM10-5KB RES 5K OHM 0.3W 0.1% RADIAL 43