Suited for Intermediate Users

100k Semitec NTC Thermistor, 235mm

Manufactured by Semitec, this glass thermistor for 3D printers is encapsulated with a copper jacket by E3D to improve heat transfer and to add strength and stability for secure installation into a hot end heater block.

This 100k Semitec NTC Thermistor is used to sense temperatures up to 300°C (572°F). Select temperature table #5 for the correct temperature reading in Marlin-based firmware.

Designed as a direct replacement for the thermistor used on the LulzBot Aerostruder Tool Head, LulzBot TAZ MOARstruder Tool Head, and LulzBot Long Block Hot End, this component is terminated with bare connector pins.

Product Alert (3)

    ​The COVID-19 pandemic is currently disrupting supply of this NTC thermistor, along with a recent surge in demand for this product.

  • Installation Warning

    Failure to properly secure the heater cartridge and/or thermistor can lead to damage to people or property.

  • Compatibility Note:

    This NTC thermistor includes an optional wiring jumper that is not directly compatible with the SE, SL, HE, HS, or HS+ Tool Heads. Contact the Technical Support team for assistance if your tool head harness has damaged connector pins. 

Works with: LulzBot Mini 2, SE Tool Head | Single Extruder | 0.5 mm, SL Tool Head (Micro) | Small Layer | 0.25 mm, HS Tool Head | Hardened Steel | 0.8 mm, HS+ Tool Head | Hardened Steel | 1.2 mm, LulzBot TAZ Dual Extruder v3 Tool Head, LulzBot TAZ/Mini Aerostruder v2, LulzBot Mini Aerostruder v1, LulzBot TAZ Aerostruder v1, LulzBot TAZ MOARstruder, LulzBot Long Block Hot End
Support: 100k Semitec NTC Thermistor, 235mm
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  • Features

    This glass thermistor is encapsulated with a copper cover for secure installation into a hot end heater block with either a locking screw or a locking plate.

  • Parts & Specifications

    Parts Included

    1 Cartridge style NTC thermistor with molex SL connector

    1 wiring extension


    Resistance: 100 kΩ when measured at 25°C (77°F)

    Wiring: 60 mm (2.36 in) length, terminated with molex SL connector

    Cartridge Outside Diameter: 3 mm (0.12 in)

    Cartridge Length: 15 mm (0.59 in) with copper housing

    Extension Wiring: 175 mm (6.89 in) length, terminated with bare molex SL connector pins


  • Resources & Documentation

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