Riedon SM-7 Series

Riedon SM-7 Series

The SM-7 wirewound precision resistor series from Riedon offers resistance values between 700kΩ and 1MΩ (lower resistances available upon request) at power rating of 0.25W, tolerances as low as ±0.005% and a standard TCR of ±10ppm/°C (wide TCR range, including Balco & Platinum wire for high TCR, available upon request). These resistors use a traditional design for through-hole circuit board mounting, while offering number of custom features. The SM-7 series resistors are all 100% acceptance tested and tracable to NIST, and offer long term stability of 100ppm/year (20ppm/year version available). Matched resistance sets to ±0.001% and ±0.5ppm/°C are also available.

  • Wirewound, precision, axial through-hole resistor
  • Available in resistance values between 700kΩ and 1MΩ (lower resistances available upon request)
  • Minimum tolerance ±0.005%
  • Standard TCR of 10ppm/°C (wide TCR range of -20ppm/°C to +6000ppm/°C available upon request)
  • Standard long term stability of 100ppm/year, with high stability version (±20ppm/year) available upon request
  • Fast rise time version with low reactance design for fast rise time and extended frequency response available upon request
  • 100% acceptance tested / traceable to NIST
  • Power rating of 0.25W
  • Maximum working voltage 250V
  • Matched resistance sets to ±0.001% and ±0.5ppm/°C available
  • Temperature range -55°C to +145°C

Please see below the Power derating curve for the Riedon 100/SM/PC series:

Riedon 100 Series/ SM series/ PC series Power derating curve

The below table gives the full specifications for each resistor model available in the Riedon 100 and SM wirewound resistor range, including the SM-7:

Riedon 100 Series/ SM series/ PC series Specifications
Specifications
Additional Features
  • Precision wirewound resistor
  • Long term stability of 100ppm/year (20ppm/year version available upon request)
  • 100% acceptance tested / traceable to NIST
  • Temperature range of -55°C to 145°C
  • Fast rise time version available
  • Matched resistance sets to ±0.001% and ±0.5ppm/°C are available
Maximum Power Rating0.25W
Maximum Resistance1MΩ
Minimum Resistance700kΩ (lower resistances available upon request)
Package/SizeThrough-hole
TCR±10 ppm/°C (other TCR values available upon request)
Tolerance
  • ±0.005%
  • ±0.01%
  • ±0.02%
  • ±0.05%
  • ±0.1%
  • ±0.5%
  • ±1%

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
PDF DocumentRiedon 100, PC and SM series precision wirewound resistor datasheet
PDF DocumentA resistor primer application note
PDF DocumentCurrent sense resistors application note
PDF DocumentCustom resistors for high pulse applications application note
PDF DocumentDC ammeter shunts press release
PDF DocumentExpanded DC current shunts press release
PDF DocumentHigh pulse custom resistor white paper
PDF DocumentLED lighting resistors application note
PDF DocumentPulse rated wirewound resistors application note
PDF DocumentResistors for power supplies white paper
PDF DocumentResistors for the medical market white paper
PDF DocumentRTD basics application note
PDF DocumentThe 'good old' power resistors application note
PDF DocumentUnderstanding temperature coefficient of resistance application notes
PDF DocumentUsing power resistors as heaters application note
PDF DocumentUsing wirewound vs. film resistors for precision applications application note
PDF DocumentRiedon product line overview

 

 

 

VIDEOS
Riedon Inc. - A Resistor Solution Company

Resistors are used in all types of manufacturing processes. Custom resistors, precision resistors, surface mount resistors, and high power resistors are only a few types that can be custom manufactured by Riedon. Check out this video to learn more.
VIDEOS
Riedon Inc. - A Resistor Solution Company

Resistors are used in all types of manufacturing processes. Custom resistors, precision resistors, surface mount resistors, and high power resistors are only a few types that can be custom manufactured by Riedon. Check out this video to learn more.

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

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Tags: Riedon SM-7, SM7, SM 7, SM series, Riedon SM, 1Mohms, 1M ohms, 700k ohms, 700kohms