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 50
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 0
SM15-1KB RES 1K OHM 0.175W 0.1% AXIAL 49
SM15-2K5X RES 2.5K OHM 0.175W 0.01% AXIAL 42
SM15-2K5B RES 2.5K OHM 0.175W 0.1% AXIAL 41
SM15-250RX RES 250 OHM 0.175W 0.01% AXIAL 11
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 6
SM15-500RX RES 500 OHM 0.175W 0.01% AXIAL 25
SM15-500RB RES 500 OHM 0.175W 0.1% AXIAL 15
SM15-50KX RES 50K OHM 0.175W 0.01% AXIAL 41
SM15-50KB RES 50K OHM 0.175W 0.1% AXIAL 38
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 0
101-100KX RES 100K OHM 1/4W 0.01% AXIAL 23
101-10KX RES 10K OHM 1/4W 0.01% AXIAL 42
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 42
101-2K5B RES 2.5K OHM 1/4W 0.1% AXIAL 10
101-250RX RES 250 OHM 1/4W 0.01% AXIAL 49
101-250RB RES 250 OHM 1/4W 0.1% AXIAL 31
101-25KX RES 25K OHM 1/4W 0.01% AXIAL 44
101-25KB RES 25K OHM 1/4W 0.1% AXIAL 41
101-350RX RES 350 OHM 1/4W 0.01% AXIAL 39
101-350RB RES 350 OHM 1/4W 0.1% AXIAL 64
101-500RX RES 500 OHM 1/4W 0.01% AXIAL 45
101-500RB RES 500 OHM 1/4W 0.1% AXIAL 0
101-50KX RES 50K OHM 1/4W 0.01% AXIAL 84
101-50KB RES 50K OHM 1/4W 0.1% AXIAL 48
101-5KX RES 5K OHM 1/4W 0.01% AXIAL 382
101-5KB RES 5K OHM 1/4W 0.1% AXIAL 0

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 10
SM10-10KX RES 10K OHM 0.3W 0.01% RADIAL 43
SM10-10KB RES 10K OHM 0.3W 0.1% RADIAL 25
SM10-1KX RES 1K OHM 0.3W 0.01% RADIAL 37
SM10-1KB RES 1K OHM 0.3W 0.1% RADIAL 50
SM10-2K5X RES 2.5K OHM 0.3W 0.01% RADIAL 41
SM10-2K5B RES 2.5K OHM 0.3W 0.1% RADIAL 50
SM10-250RX RES 250 OHM 0.3W 0.01% RADIAL 17
SM10-250RB RES 250 OHM 0.3W 0.1% RADIAL 45
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 0
SM10-500RX RES 500 OHM 0.3W 0.01% RADIAL 0
SM10-500RB RES 500 OHM 0.3W 0.1% RADIAL 47
SM10-50KX RES 50K OHM 0.3W 0.01% RADIAL 38
SM10-50KB RES 50K OHM 0.3W 0.1% RADIAL 43
SM10-5KX RES 5K OHM 0.3W 0.01% RADIAL 46
SM10-5KB RES 5K OHM 0.3W 0.1% RADIAL 43