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What is a Thermistor?

A thermistor is a device whose electrical resistance is controlled by temperature. Thermistors are available in two types: NTC thermistors, or negative thermal coefficient thermistors, and PTC thermistors, or positive thermal coefficient thermistors. In NTC thermistors, the resistance decreases proportionally with increases in temperature. PTC thermistors, on the other hand, have increasing resistance with increasing temperature.

Types of Thermistors

There are many different kinds of thermistors and at Future Electronics we stock many of the most common types categorized by Type, Resistance, Tolerance, Rated Current, B-constant, Packaging type and Temperature Range. The parametric filters on our website can help refine your search results depending on the required specifications.

The most common sizes for Resistance are 10 kΩ, and 100 kΩ. We also carry thermistors with Resistance as high as 7.5 MΩ. Rated Current can be as high as 310 A.

Thermistors from Future Electronics

Future Electronics has a full selection of thermistors of all types and sizes from different suppliers when looking for a waterproof thermistor, high temperature sensor thermistor, surface mount thermistor or to design any circuit requiring a thermistor. Simply choose from the thermistor technical attributes below and your search results will quickly be narrowed to match your specific thermistor application needs.

We deal with EPCOS, GE Measurement & Control, Murata, Panasonic or Vishay, among other manufacturers. You can easily refine your thermistor product search results by clicking your preferred thermistor brand below from our list of manufacturers.

Applications for Thermistors:

Thermistors can be used in all types of applications including:

  • Circuit protection
  • CRT displays
  • Heater in automotive applications
  • Power supply circuits
  • Digital thermostats
  • 3D printers
  • Food preparation and storage
  • Appliances

Choosing the Right Thermistor:

When you are looking for the right thermistors, with the FutureElectronics.com parametric search, you can filter the results by various attributes: by Type (NTC, PTC), Resistance (200 mΩ, 10 kΩ, 100 kΩ,…) and Rated Current (0.06 mA, 0.31 mA, 100 mA, 1.6 A to name a few. You will be able to find the right thermistors of different sizes and types when looking for a high temperature sensor thermistor, waterproof thermistor, surface mount thermistor or for any circuit design requiring a thermistor.

Thermistors in Production Ready Packaging or R&D Quantities

We offer customers many of our products in quantities that will avoid unneeded surplus.

In addition, Future Electronics offers clients a unique bonded inventory program that is designed to eliminate potential problems that may arise from an unpredictable supply of products containing raw metals and products with erratic or long lead times. Talk with your nearest Future Electronics branch and find out more on how you and your company can avoid possible shortages.

Featured Thermistor Products


Manufacturer Part Number Description
EPCOSB57153S150MB57153 Series 15 Ohm 2900 K 1.8 A NTC Thermistors for Inrush Current Limiting
EPCOSB57364S509MB57364S Series 5 Ohm 8.5 A 3060 K NTC Thermistors for Inrush Current Limiting
EPCOSB57891S0502F008B57891 series 5k Ohm NTC 1% Thermistor
EPCOSB57364S100MB57364S Series 10 Ohm 7.5 A 3300 K NTC Thermistors for Inrush Current Limiting
EPCOSB57236S0100MB57236 Series 10 Ohm 3.5 A 265 Vrms Current Limiter Thermistor
GE Measurement & ControlRL0503-5820-97-MSRL0503 Series 10 KOhms Through Hole Radial NTC Thermistor
GE Measurement & ControlCL-40CL Series 5 Ohm ± 25 % 6 A Radial Uninsulated Leads Thermistor Disc
GE Measurement & ControlCL-30ACL Series 8 A 2.5 Ohm Through Hole NTC Thermistor with Uninsulated Lead-Wires
GE Measurement & ControlCL-110CL Series 10 Ohm ± 25 % 3.2 A Radial Uninsulated Leads Thermistor Disc
GE Measurement & ControlRL0503-17.56K-96-MSRL0503 Series 30 KOhms Through Hole Radial NTC Thermistor
MurataNCP21XV103J03RANCP21 Series 10 KΩ 3934 K ± 5 % 0805 Surface Mount NTC Thermistor
MurataNCP18XH103J03RBNCP18 Series 10 KΩ 3434 K ± 5 % 0603 Surface Mount NTC Thermistor
MurataNCP21XM472J03RANCP21 Series 4.7 KΩ 3545 K ± 5 % 0805 Surface Mount NTC Thermistor
MurataNCP18XH103F03RBNCP18 Series 10 KΩ 3434 K ± 1 % 0603 Surface Mount NTC Thermistor
PanasonicERT-JZEG103JAERT-J Series 10 KOhm 3435 K ± 5 % 0603 Surface Mount NTC Thermistor
PanasonicERT-J1VG103FAERT-J Series 10 KOhm 3435 K ± 1 % 0603 Surface Mount NTC Thermistor
Vishay2381-640-63683NTCL Series NTC 68 kOhm ± 1.5 % 4190 Radial Thermistor
Vishay2381-615-53103NTCS Series 0805 NTC 10 kOhm ± 3 % 3570 Surface Mount Thermistor
VishayNTCS0603E3103FMTNTCS Series 10 KOhm 3610 K ± 1 % 0603 Surface Mount NTC Thermistor
Vishay238166051311PTCCL Series PTC 25 Ohm ± 25 % Radial Overload Protection Thermistor
Vishay2381615361040603 NTC 100 kOhm ±3 % 4100 °K Surface Mount Glass Protected Thermistor
Vishay08J5003JE8J5003-5 Series ±5 % 0 to 100 °C NTC Thermistors
Vishay2381661517122381 Series PTC 19 Ohm 170 mA Radial Overload Protection Thermistor
VishayNTCS0603E3104GXT0603 NTC 100 kohm ± 2 % 4100 Surface Mount Glass Protected Thermistor
VishayNTCS0805E3103FMTNTCS0805E3 Series 0805 10 kOhm ±1 % Surface Mount Glass Protected NTC Thermistor

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