# Best 3D Printer Thermistors for Accurate Temps (2026) Source: https://filamentprintlab.com/best/thermistors Updated: 2026-09-15 Publisher: Filament Print Lab. Our score is an editorial rating out of 10 (fit 35%, features 25%, build 20%, value 20%), not a customer rating. Method: https://filamentprintlab.com/how-we-research#our-score The main thing to check is temperature range and type. A standard 100k NTC thermistor covers most hotends up to around 300C, while high-temp cartridge styles like the PT100 or PT1000 handle 350C and beyond for materials such as PC or PPS-CF. Match the resistance curve to what your firmware expects, or readings will drift. Also look at the bead versus glass-encapsulated versus cartridge form factor, lead wire length, and whether the tip fits your heater block bore. These guides suit anyone chasing consistent first layers or troubleshooting thermal runaway errors. Hobbyists running PLA and PETG are fine with a basic glass bead type, while high-temp printers need a PT1000 paired with the right amplifier board. A practical tip: buy a two-pack so you have a spare, since thermistors are cheap and a dead one stops a print mid-job. Confirm the connector matches your board before ordering. ## Picks ### 1. HICTOP Ender 3 Thermistor with JST Connector 1.35m NTC 3950 100k Temp Sensor (Pack of 5) Our score: 8.4/10 (Fit for the job 9/10 · Features and specs 8/10 · Build and materials 7/10 · Value 9/10) HICTOP Ender 3 thermistors with JST connector, 1.35m NTC 3950 100k temp sensors in a pack of 5. Pros: - 1.35m lead length reaches the mainboard on Ender 3 wiring runs - JST connector plugs straight into stock Ender boards - Pack of 5 covers hotend and bed sensor replacements Cons: - Thermistor glass beads are fragile and break if pinched when installed - Firmware must be set to the matching thermistor type to read correctly Details: https://filamentprintlab.com/product/B097STFYYR ### 2. 2-Pack NTC 100K B3950 Thermistor OD3mm Cartridge Sensor 280C for Ender 3 V2 CR10 V6 Our score: 8.4/10 (Fit for the job 9/10 · Features and specs 8/10 · Build and materials 8/10 · Value 8/10) A 2-Pack of NTC 100K B3950 cartridge thermistors, OD3mm and rated to 280C, for Ender 3 V2, CR10 and V6 hotends. Pros: - Cartridge style is sturdier than bare glass bead thermistors - 280C rating covers PETG, ABS and many nylon filaments - OD3mm size fits V6 and newer Creality heater blocks Cons: - Older blocks with bead holes will not accept cartridge sensors - Check the connector matches your board before wiring it in Details: https://filamentprintlab.com/product/B0BDFHZZQX ### 3. 3Dman 24V 70W Heater Cartridge 620 HT-NTC100K Thermistor 1M for 3D Printer V6 J-Head (5 Pcs) Our score: 8.4/10 (Fit for the job 9/10 · Features and specs 9/10 · Build and materials 7/10 · Value 8/10) 3Dman set of 5 Pcs 24V 70W heater cartridges plus HT-NTC100K thermistors with 1M leads for V6 and J-Head hotends. Pros: - 70W heater warms the block faster and copes with high-flow printing - HT-NTC100K thermistor reads higher temperatures than standard beads - 5 Pcs pairs give plenty of spares for V6 and J-Head repairs Cons: - 70W heaters can overheat blocks if firmware thermal protection is off - Needs firmware thermistor type set to match HT-NTC100K readings Details: https://filamentprintlab.com/product/B09SY5YMH8 ### 4. Ucreate NTC 100k Thermistor Heater Cartridge 24V 64w for Artillery Sidewinder X1 X2 (Pack of 4) Our score: 7.8/10 (Fit for the job 8/10 · Features and specs 8/10 · Build and materials 7/10 · Value 8/10) Ucreate NTC 100k thermistor and 24V 64w heater cartridge pack of 4 for Artillery Sidewinder X1 and X2 printers. Pros: - Specifically matched to Artillery Sidewinder X1 and X2 hotends - Pack of 4 supplies spares for repeated heater or sensor faults - 24V 64w heater matches the stock Sidewinder heat output Cons: - Artillery-specific fitment limits use on other printer brands - Swapping wires on Sidewinder hotends means careful ribbon handling Details: https://filamentprintlab.com/product/B09W4VNTP7 ### 5. HiLetgo 10pcs 3D Printer 100K ohm NTC 3950 Thermistors Sensors with 1m Cable for RepRap Our score: 7.6/10 (Fit for the job 8/10 · Features and specs 7/10 · Build and materials 6/10 · Value 9/10) HiLetgo 10pcs 100K ohm NTC 3950 thermistor sensors with 1m cable for RepRap-style printers and DIY builds. Pros: - 10pcs pack is ideal for tinkerers maintaining several RepRap machines - NTC 3950 100K is the most common thermistor type in firmware tables - 1m cable is long enough for most hotend and bed wiring runs Cons: - No connector fitted, so crimping or soldering is usually needed - Bare bead sensors break easily if the leads are bent sharply Details: https://filamentprintlab.com/product/B07V6YBFSY ### 6. Ender 3 Heater Cartridge 12V 50W and NTC 100k 3950 Thermistor HT-NTC100K for E3D V6 Volcano Our score: 7.5/10 (Fit for the job 7/10 · Features and specs 8/10 · Build and materials 7/10 · Value 8/10) Ender 3 heater cartridge at 12V 50W with an NTC 100k 3950 HT-NTC100K thermistor for E3D V6 and Volcano blocks. Pros: - Heater and thermistor together restore a failed hotend in one order - Fits E3D V6 and Volcano blocks as well as Ender-style setups - 50W heater gives a bit more headroom than common low-watt cartridges Cons: - 12V heater is wrong for newer higher-voltage printers, so check your supply - Title mixes Ender 3 and V6 fitment, so confirm sensor diameter Details: https://filamentprintlab.com/product/B0CJN33WMK ### 7. 12V 40W Ceramic Cartridge Heater and 3950 100K NTC Thermistor for Anet 3D Printer (4pcs) Our score: 7.0/10 (Fit for the job 7/10 · Features and specs 7/10 · Build and materials 6/10 · Value 8/10) A 4pcs set of 12V 40W ceramic cartridge heaters and 3950 100K NTC thermistors for Anet printers. Pros: - Heater and thermistor pairs fix the most common hotend failures - 12V 40W spec matches older Anet printer power systems - 4pcs gives spares for more than one repair job Cons: - 12V heaters will not suit higher-voltage printers like newer Ender models - Anet-specific connectors may not fit other brands' boards Details: https://filamentprintlab.com/product/B09S3PLNPW ### 8. AYLIFU 3D Printer Heater Cartridge and 3mm 100K Thermistor Temp Sensor NTC 3D Printer Parts Our score: 6.0/10 (Fit for the job 6/10 · Features and specs 5/10 · Build and materials 6/10 · Value 7/10) AYLIFU heater cartridge and 3mm 100K NTC thermistor temp sensor, a basic replacement pair for common hotends. Pros: - 3mm thermistor size suits many E3D and Creality style heater blocks - Replacing heater and sensor together solves thermal runaway errors - Budget pairing is a quick fix to get a printer running again Cons: - Check voltage and wattage match your hotend before installing - Unknown connector type may require rewiring to your board Details: https://filamentprintlab.com/product/B0CS6W7NGR As an Amazon Associate I earn from qualifying purchases.