GL122E9J - GL Series

Series: GL
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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 high temperature glass probe thermistors feature superior long-term stability and fast thermal response.  Their small size and glass encapsulation makes them especially suitable for temperature measurement and control where space is limited and where extreme temperatures, corrosive atmospheres and⁄or harsh environments are encountered.  Littelfuse glass probe thermistors have a wide range of applications within the HVAC⁄R, Industrial, Medical, Consumer Electronics, Alternative Energy, Telecommunications, Medical and Environmental Systems and Controls markets.


  • High temperature capability to +300°C
  • Excellent long term stability
  • High reliability
  • Solderable lead wires
  • Fast thermal response time

  • Non-standard resistance values and tolerances
  • Two glass body lengths (.500" and 1.000")


  • 0.070" Diameter

pdf icon Sensing Products Selection Guide

This guide provides an introduction to magnetic sensing and options for value-added custom design packages.

Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s)
GL122E9J NTC THERMISTOR 1.2K OHM 5% GLASS PROBE RoHS No 02/27/2019 PbFree No 02/27/2019
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