SP Series High Accuracy Bead Thermistors

Our SP series is a range of interchangeable, epoxy-coated bead NTC thermistors that meet all the standard industry specifications.  These RT curve-matched thermistors have become widely used in temperature control, data-logging, medical instrumentation, home automation and smart house controls (domotics).

They are also used in automotive applications due to their high stability and wide operating range of -50°C/+150°C.  They are ideal for such applications due to their fast thermal response time and very high accuracy, typically ±0.2K over 0°C to 70°C.  Even higher accuracy and product interchangeability over a wider temperature range are also available.

The standard stock version has 50mm long bare 30AWG leads but insulated lead-wires with various insulation types and lengths upto 200mm are also available.



  • Medical sensors & appliances
  • Temperature data-loggers
  • Clinical instrumentation
  • Smart home automation (domotics)
  • Automotive electronics


  • Interchangeable to ±0.2K (0-70°C) or better
  • Fast response sensor design
  • Operating range -50°C to 150°C
  • Insulated lead-wire versions available
  • Excellent long term stability

Technical Specifications

ATC Semitec SP High Accuracy NTC Thermistor Table