Thermistors from Littelfuse, Inc.

Epoxy Coated Thermistors -- KC103J2K

Epoxy Coated Thermistors -- KC103J2K -- View Larger Image
Epoxy Coated Thermistors -- KC103J2K-Image

Littelfuse miniature leaded epoxy coated thermistors are manufactured using the same state of the art manufacturing techniques as those used to produce Littelfuse precision interchangeable devices. This results in devices with superior long term reliability characteristics especially suitable for temperature measurement, temperature control and temperature compensation applications.


  • Kynar insulated lead wires
  • Low cost
  • High reliability
  • Epoxy encapsulated
  • Small size
  • Fast thermal response time


  • Special lead materials and lengths
  • Special encapsulants or probe housings
  • Non-standard resistance values and tolerances
  • Point matched at specified temperatures


  • Thermal time constant: 1 second max. in a well stirred oil bath, 10 seconds max. in still air
  • Dissipation constant: 1 mW/°C
  • Rated to +135°C maximum operating temperature (R-T Curve "B" devices limited to +100°C Max.)

Product Category
Operating Specifications
Temperature Range
-55 to 135 C (-67 to 275 F)

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Resistance (@25°C)