RA Series - Surface Mount End-Banded Chip Thermistors 0402 Style (125°C)

Series: RA
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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 surface mount end-banded thermistor elements are designed for use on hybrid substrates, integrated circuits or printed circuit boards. They have a solder coated metallization which is suitable for various contact techniques including wire bond, epoxy or solder. Since they are manufactured using the most advanced equipment and technology available, their dimensional parameters are extremely uniform making the devices especially suitable for use with automatic handling and placement equipment.


  • Surface mountable
  • Small size
  • Low cost
  • Nickel Barrier


  • Non-standard resistance values and tolerances
  • Tape and reel packaging
  • Solder coated metallization


  • Thermal time constant: 10 seconds max
  • Dissipation constant: 1 mW/°C
  • Rated to +125°C maximum operating temperature

Access specifications, certifications, check availability and order parts below

Catalog #Resis Ω @ 25°CResis Tol ± % @25°CMax Power RatingBeta (K) 0-50°CBeta (K) 25-85°CMin Operating Temp (°C)Max Operating Temp (°C)Engineering DrawingRT TablePartner ECAD ModelsCompare
RA102G0J1000540mW3689-40125  RA102G0J
RA222H0J2200540mW4060-40125  RA222H0J
RA222L0J2200540mW4100-40125  RA222L0J
RA224MOJ220000540mW4050-40125  RA224MOJ
RA472KOJ4700540mW4002-40125  RA472KOJ
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s)
RA103J0Q NTC THERMISTOR 10K OHM 1% 0402 RoHS No 06/13/2019 PbFree No 06/13/2019 CoC_RoHS10_RA103J0Q_6-14-2019 REACH201_Declaration_RA103J0Q_12-12-2019 No
Does not Contain
RA103J0Q-TR NTC THERMISTOR 10K OHM 1% 0402 T and R RoHS No 06/13/2019 PbFree No 06/13/2019 No
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