KC Series - Miniature Leaded Epoxy Coated Thermistors (135°C) Kynar Insulated Leads

Series: KC
Littelfuse Leaded Thermistors Miniature - KC image
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Disclaimer Notice

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

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.)

Access specifications, certifications, check availability and order parts below

Catalog #Resis Ω @ 25°CResis Tol ± % @25°CR-T CurveOperating TemperatureEngineering DrawingRT TableStockSamplesCompare
KC101B2K10010B-55° to 100°CEngineeringRTCheckOrder
KC102F2K100010F-55° to 135°CEngineeringRTCheckOrder
KC103G2K1000010G-55° to 135°CEngineeringRTCheckOrder
KC103J2K1000010J-55° to 135°CEngineeringRTCheckOrder
KC104R2K10000010R-55° to 135°CEngineeringRTCheckOrder
KC203J2K2000010J-55° to 135°CEngineeringRTCheckOrder
KC203N3F200001N1-55° to 125°CEngineeringRTCheck
KC222J2K225210J-55° to 135°CEngineeringRTCheckOrder
KC302J2K300010J-55° to 135°CEngineeringRTCheckOrder
KC303J2K3000010J-55° to 135°CEngineeringRTCheckOrder
KC502J2K500010J-55° to 135°CEngineeringRTCheckOrder
KC503J2K5000010J-55° to 135°CEngineeringRTCheckOrder
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s) IPC-Material Declaration
KC104R2K NTC THERMISTOR 100K ± 10% "R" RoHS No 03/11/2021 PbFree No 03/11/2021 CoC_RoHS10_KC104R2K REACH211_Declaration_KC104R2K Yes
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