0603 - RB Series - Surface Mount End-Banded Chip Thermistors 0603 Style (125°C)

Series: 0603 - RB
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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°COperating TemperatureEngineering DrawingRT TablePartner ECAD ModelsCompare
RB102D0J10005150mW3250-40° to 125°CEngineeringRTRB102D0J
RB103E0J100005150mW3435-40° to 125°CEngineeringRTRB103E0J
RB103G0J100005150mW37123750-40° to 125°CEngineeringRTRB103G0J
RB103J0J1000053976-40° to 125°CEngineeringRTRB103J0J
RB103K0J100005150mW4000-40° to 125°CEngineeringRTRB103K0J
RB104L0J1000005150mW4150-40° to 125°CEngineeringRTRB104L0J
RB204R0J2000005150mW4250-40° to 125°CEngineeringRTRB204R0J
RB222E0J220053435-40° to 125°CEngineeringRTRB222E0J
RB252L0J25005150mW4100-40° to 125°CEngineeringRTRB252L0J
RB303K0J300005150mW4000-40° to 125°CEngineeringRTRB303K0J
RB503K0J500005150mW4000-40° to 125°CEngineeringRTRB503K0J
Obsolete: 2018 -11-27
50005150mW3550-40° to 125°CEngineeringRTRB502F0J
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