PT Series - Standard Precision Interchangeable Thermistors (150°C) ± 0.2°C Accuracy- Uninsulated Leads

Series: PT
Littelfuse Leaded Thermistors Standard Precision - PT 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 standard precision interchangeable thermistors are low cost, highly accurate, stable devices designed specifically for temperature sensing and control applications. They are particularly suited for uses where their precision interchangeability eliminates the necessity for costly individual circuit calibration.


  • High accuracy
  • Fast thermal response time
  • Low cost
  • Small size
  • Epoxy encapsulated
  • Excellent long-term stability
  • R/T Curve-matched


  • Special lead materials and lengths
  • Special encapsulants or probe housings
  • Non-standard resistance values and tolerances


  • Interchangeability accuracy of ±0.2°C (0°C to +70°C)
  • Thermal time constant: 1 second max. in a well stirred oil bath, 10 seconds max. in still air
  • Dissipation constant: 1 mW/°C
  • Maximum power rating: 30 mW at 25°C derated to 1 mW at 125°C
  • Operating temperature range: -80°C to +150°C
  • Storage and operation temperatures for best long-term stability: -80° to +120°C

Access specifications, certifications, check availability and order parts below

Catalog #Resis Ω @ 25°CR-T CurveMax Power RatingOperating TemperatureEngineering DrawingRT TableStockSamplesCompare
PT102J21000J30mW-80° to 150°CEngineeringRTCheckOrder
PT103G210000G30mW-80° to 150°CEngineeringRTCheckOrder
PT103J210000J30mW-80° to 150°CEngineeringRTCheckOrder
PT104J2100000J30mW-80° to 150°CEngineeringRTCheck
PT104R2100000R30mW-80° to 150°CEngineeringRTCheck
PT203J220000J30mW-80° to 150°CEngineeringRTCheck
PT222J22252J30mW-80° to 150°CEngineeringRTCheckOrder
PT302J23000J30mW-80° to 150°CEngineeringRTCheckOrder
PT303J230000J30mW-80° to 150°CEngineeringRTCheckOrder
PT502J25000J30mW-80° to 150°CEngineeringRTCheckOrder
PT503J250000J30mW-80° to 150°CEngineeringRTCheck
PT503R250000R30mW-80° to 150°CEngineeringRTCheck
PT602J26000J30mW-80° to 150°CEngineeringRTCheckOrder
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s) IPC-Material Declaration
PT103G2 THERMISTOR, US SENSOR RoHS No 06/26/2019 PbFree No 06/26/2019 CoC_RoHS10_PT103G2 REACH209_Declaration_PT103G2 Yes
Does not Contain
PT103J2 THERMISTOR, US SENSOR RoHS No 09/29/2017 PbFree No 09/29/2017 CoC_RoHS10_PT103J2 REACH197_Declaration_PT103J2
Does not Contain
PT203J2 THERMISTOR, US SENSOR RoHS No 07/09/2019 PbFree No 07/09/2019 CoC_RoHS10_PT203J2 Yes
PT222J2 THERMISTOR, US SENSOR RoHS No 12/06/2021 PbFree No 12/06/2021 CoC_RoHS10_PT222J2 REACH219_Declaration_PT222J2 Yes
Does not Contain
PT302J2 THERMISTOR, U.S. SENS RoHS No 10/30/2019 PbFree No 10/30/2019 CoC_RoHS10_PT302J2 Yes
PT303J2 THERMISTOR, U.S. SENS RoHS No 07/11/2019 PbFree No 07/11/2019 CoC_RoHS10_PT303J2 Yes
PT502J2 THERMISTOR, US SENSOR RoHS No 03/07/2019 PbFree No 03/07/2019 CoC_RoHS10_PT502J2 REACH197_Declaration_PT502J2 Yes
Does not Contain
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