USUR1000 Series - UL Recognized NTC Thermistor Assemblies with #6 Ring Lug

Series: USUR1000
Littelfuse Thermistor Probes & Assemblies USUR1000 image
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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 UL Recognized ring lug thermistor probe assemblies are manufacturing using super stable NTC chips which are potted into a ring lug housing with thermally conductive epoxy. Designed for rapid thermal response and excellent long-term stability, these devices can be used in a wide range of surface temperature sensing applications.


  • Insulated lead wire rated for 300V minimum
  • User selectable lead length
  • Ring tongue mounting hole diameter = 0.145" nominal
  • Ring tongue mounting hole stud size = #6


  • Resistance temperature curve = "J"
  • Resistance tolerances from ±2% to ±10% available
  • Temperature rating = -40°C to +125°C
  • UL File Number E232830 (UL Category XGPU2)

Access specifications, certifications, check availability and order parts below

Catalog #Resis Ω @ 25°CResis Tol ± % @25°CR-T CurveMax Power RatingOperating TemperatureEngineering DrawingRT TableCompare
USUR1000-102G10002J20mW-40° to 125°CEngineeringRT
USUR1000-102H10003J20mW-40° to 125°CEngineeringRT
USUR1000-102J10005J20mW-40° to 125°CEngineeringRT
USUR1000-102K100010J20mW-40° to 125°CEngineeringRT
USUR1000-103G100002J20mW-40° to 125°CEngineeringRT
USUR1000-103H100003J20mW-40° to 125°CEngineeringRT
USUR1000-103J100005J20mW-40° to 125°CEngineeringRT
USUR1000-103K1000010J20mW-40° to 125°CEngineeringRT
USUR1000-104G1000002J20mW-40° to 125°CEngineeringRT
USUR1000-104H1000003J20mW-40° to 125°CEngineeringRT
USUR1000-104J1000005J20mW-40° to 125°CEngineeringRT
USUR1000-104K10000010J20mW-40° to 125°CEngineeringRT
USUR1000-203G200002J20mW-40° to 125°CEngineeringRT
USUR1000-203H200003J20mW-40° to 125°CEngineeringRT
USUR1000-203J200005J20mW-40° to 125°CEngineeringRT
USUR1000-203K2000010J20mW-40° to 125°CEngineeringRT
USUR1000-222G22522J20mW-40° to 125°CEngineeringRT
USUR1000-222H22523J20mW-40° to 125°CEngineeringRT
USUR1000-222J22525J20mW-40° to 125°CEngineeringRT
USUR1000-222K225210J20mW-40° to 125°CEngineeringRT
USUR1000-302G30002J20mW-40° to 125°CEngineeringRT
USUR1000-302H30003J20mW-40° to 125°CEngineeringRT
USUR1000-302J30005J20mW-40° to 125°CEngineeringRT
USUR1000-302K300010J20mW-40° to 125°CEngineeringRT
USUR1000-303G300002J20mW-40° to 125°CEngineeringRT
USUR1000-303H300003J20mW-40° to 125°CEngineeringRT
USUR1000-303J300005J20mW-40° to 125°CEngineeringRT
USUR1000-303K3000010J20mW-40° to 125°CEngineeringRT
USUR1000-502G50002J20mW-40° to 125°CEngineeringRT
USUR1000-502H50003J20mW-40° to 125°CEngineeringRT
USUR1000-502J50005J20mW-40° to 125°CEngineeringRT
USUR1000-502K500010J20mW-40° to 125°CEngineeringRT
USUR1000-503G500002J20mW-40° to 125°CEngineeringRT
USUR1000-503H500003J20mW-40° to 125°CEngineeringRT
USUR1000-503J500005J20mW-40° to 125°CEngineeringRT
USUR1000-503K5000010J20mW-40° to 125°CEngineeringRT
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s) IPC-Material Declaration
USUR1000-103G-06 THERMISTOR, U.S. SENSOR RoHS No 01/15/2020 PbFree No 01/15/2020 CoC_RoHS10_USUR1000-103G-06 REACH201_Declaration_USUR1000-103G-06 Yes
Does not Contain
USUR1000-103G-03 RoHS No 01/15/2020 PbFree No 01/15/2020 Yes
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