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4.7k Ohm Bead Thermistor

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Quoting product code: FX21X


About this product


  • Bead thermistor
  • 4.7k Ohms
  • 250mW Max. power rating

Product overview

  • Bead Thermistor
  • 4.7k Ohms
  • 250mW Max. power rating
  • ±5% Tolerance
  • 0.02 ms Response time
  • 40-125°C Temperature range  

Bead type thermistor for general applications including temperature measurement and compensation.


Operating Specifications

Temperature Range:

-40 to 125 °C°C

Maximum Power Rating:



±5 %%

Response Time:

0.02 msms

Dissipation Factor:


Thermal Time Constraints:


Hi I hope you can help me. The thermistor in my old Iomega UltraMax Desktop 2-bay caddy has died, which thermistor would you replace it with? The current one is all green apart from the tip which is white. Thanks for your help.
Asked by: Richard
Unfortunately we would be unable to advise on this.
Answered by: DH
Date published: 2015-07-17

What is the temperature measurment range of the FX42V ?
Asked by: mike simpson
-40c to +125c
Answered by: LC
Date published: 2015-07-17

Can you explain what the 7 means in the resistance 4K7? Many thanks
Asked by: Justin
4700 ohms is the overall resistance (4.7K ohms)
Answered by: JK
Date published: 2017-01-26

Are these NTC or PTC?
Asked by: N/A
these are negative temperature coefficient
Answered by: SG
Date published: 2018-01-03

Hi, what is the diameter of the bead? cheers.
Asked by: will
Approx 3.8mm
Answered by: JK
Date published: 2015-07-17
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