NTC100K Thermistor Sensor for 3D Printer Hotend Extruder

Upgrade your 3D printer's temperature accuracy with this NTC100K Thermistor Sensor — engineered for hotend and extruder heater blocks. Featuring a stainless steel enclosure and heavy-duty high-temperature wiring, this thermistor delivers precise, reliable readings across a wide temperature range of -40°C to 300°C, making it ideal for printing high-temperature filaments such as ABS, ASA, Nylon, and Polycarbonate.

Unlike standard exposed-probe sensors, this upgraded design uses a resistance-package temperature measurement method housed in a stainless steel shell — protecting the sensing element and improving measurement stability. The high-temperature lead wire is double the thickness of typical market alternatives, reducing the risk of wire breakage during long print sessions.

Key Features

• Wide Temperature Range: -40°C to 300°C — suitable for a broad range of 3D printing filaments
• Stainless Steel Housing: Protects the sensor element for long-lasting, consistent performance
• Upgraded Measurement Method: Resistance-package design for improved accuracy over traditional exposed probes
• Double-Thick High-Temp Wire: More durable than standard wiring, reducing wear and breakage risk
• NTC100K / 3950 Compatible: Works with most popular 3D printer control boards and firmware configurations
• Easy Replacement: Drop-in replacement for standard hotend thermistor sensors

Specifications

• Sensor Type: NTC 100K (3950)
• Material: ABS + Metal (Stainless Steel)
• Cable Length: Approx. 1M / 3.28ft or 2M / 6.56ft (select your option)
• Temperature Range: -40°C to 300°C
• Quantity: 1 piece
• Made in China

Package Includes

• 1 × NTC100K Thermistor Temperature Sensor

Note: Due to lighting conditions and shooting angles, slight color variation may occur. Please allow 0–1cm tolerance due to manual measurement.

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Frequently Asked Questions

Q: What 3D printers is the NTC100K thermistor sensor compatible with?

A: This NTC100K (3950) thermistor is compatible with most popular FDM 3D printers that use a standard hotend thermistor, including many Creality, Ender, Anet, and RepRap-style machines. Always confirm your printer's thermistor type in your firmware settings before installing.

Q: What filament types can I use with this thermistor's temperature range?

A: With a range of -40°C to 300°C, this sensor supports virtually all common 3D printing filaments including PLA, PETG, ABS, ASA, Nylon, TPU, and Polycarbonate, making it a versatile upgrade for high-temperature printing needs.

Q: How do I install the NTC100K thermistor in my 3D printer hotend?

A: Installation involves powering off the printer, removing the old thermistor from the heater block, inserting the new sensor into the designated thermistor slot, and securing it. Always update your firmware thermistor type setting to NTC100K / 3950 for accurate temperature readings. Consult your printer's manual for model-specific guidance.

Q: Why is the double-thick wire important for a 3D printer thermistor?

A: The heater block area is subject to constant heat cycles and mechanical vibration. A thicker high-temperature wire is significantly more resistant to fatigue, fraying, and breakage over time, ensuring a longer service life and more consistent temperature monitoring during extended print jobs.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.