Best 3D Printer Thermistors for Accurate Temps (2026)
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HICTOP Ender 3 Thermistor with JST Connector 1.35m NTC 3950 100k Temp Sensor (Pack of 5)
HICTOP Ender 3 thermistors with JST connector, 1.35m NTC 3950 100k temp sensors in a pack of 5.
2-Pack NTC 100K B3950 Thermistor OD3mm Cartridge Sensor 280C for Ender 3 V2 CR10 V6
A 2-Pack of NTC 100K B3950 cartridge thermistors, OD3mm and rated to 280C, for Ender 3 V2, CR10 and V6 hotends.
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.
The short version
We compared 8 picks. Our scores range from 6.0 to 8.4 out of 10.
- Best overall:HICTOP Ender 3 Thermistor with JST Connector 1.35m NTC 3950 100k Temp Sensor (Pack of 5). Highest overall score in this guide at 8.4/10.
- Also great value:HiLetgo 10pcs 3D Printer 100K ohm NTC 3950 Thermistors Sensors with 1m Cable for RepRap. Value score of 9/10, overall 7.6/10.
- Solid build:2-Pack NTC 100K B3950 Thermistor OD3mm Cartridge Sensor 280C for Ender 3 V2 CR10 V6. Build and materials score of 8/10, overall 8.4/10.
- Feature-rich:3Dman 24V 70W Heater Cartridge 620 HT-NTC100K Thermistor 1M for 3D Printer V6 J-Head (5 Pcs). Features score of 9/10, overall 8.4/10.
Scores are our editorial assessment, not customer ratings. How we score
- 1.HICTOP Ender 3 Thermistor with JST Connector 1.35m NTC 3950 100k Temp Sensor (Pack of 5)8.4/10See on AmazonCheck price
- 2.2-Pack NTC 100K B3950 Thermistor OD3mm Cartridge Sensor 280C for Ender 3 V2 CR10 V68.4/10See on AmazonCheck price
- 3.3Dman 24V 70W Heater Cartridge 620 HT-NTC100K Thermistor 1M for 3D Printer V6 J-Head (5 Pcs)8.4/10See on AmazonCheck price
- 4.Ucreate NTC 100k Thermistor Heater Cartridge 24V 64w for Artillery Sidewinder X1 X2 (Pack of 4)7.8/10See on AmazonCheck price
- 5.HiLetgo 10pcs 3D Printer 100K ohm NTC 3950 Thermistors Sensors with 1m Cable for RepRap7.6/10See on AmazonCheck price
- 6.Ender 3 Heater Cartridge 12V 50W and NTC 100k 3950 Thermistor HT-NTC100K for E3D V6 Volcano7.5/10See on AmazonCheck price
- 7.12V 40W Ceramic Cartridge Heater and 3950 100K NTC Thermistor for Anet 3D Printer (4pcs)7.0/10See on AmazonCheck price
- 8.AYLIFU 3D Printer Heater Cartridge and 3mm 100K Thermistor Temp Sensor NTC 3D Printer Parts6.0/10See on AmazonCheck price
#1HICTOP Ender 3 thermistors with JST connector, 1.35m NTC 3950 100k temp sensors in a pack of 5.
Fit for the job 9/10 · Features and specs 8/10 · Build and materials 7/10 · Value 9/10
- + 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
- - Thermistor glass beads are fragile and break if pinched when installed
- - Firmware must be set to the matching thermistor type to read correctly
#2A 2-Pack of NTC 100K B3950 cartridge thermistors, OD3mm and rated to 280C, for Ender 3 V2, CR10 and V6 hotends.
Fit for the job 9/10 · Features and specs 8/10 · Build and materials 8/10 · Value 8/10
- + 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
- - Older blocks with bead holes will not accept cartridge sensors
- - Check the connector matches your board before wiring it in
#33Dman set of 5 Pcs 24V 70W heater cartridges plus HT-NTC100K thermistors with 1M leads for V6 and J-Head hotends.
Fit for the job 9/10 · Features and specs 9/10 · Build and materials 7/10 · Value 8/10
- + 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
- - 70W heaters can overheat blocks if firmware thermal protection is off
- - Needs firmware thermistor type set to match HT-NTC100K readings
#4Ucreate NTC 100k thermistor and 24V 64w heater cartridge pack of 4 for Artillery Sidewinder X1 and X2 printers.
Fit for the job 8/10 · Features and specs 8/10 · Build and materials 7/10 · Value 8/10
- + 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
- - Artillery-specific fitment limits use on other printer brands
- - Swapping wires on Sidewinder hotends means careful ribbon handling
#5HiLetgo 10pcs 100K ohm NTC 3950 thermistor sensors with 1m cable for RepRap-style printers and DIY builds.
Fit for the job 8/10 · Features and specs 7/10 · Build and materials 6/10 · Value 9/10
- + 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
- - No connector fitted, so crimping or soldering is usually needed
- - Bare bead sensors break easily if the leads are bent sharply
#6Ender 3 heater cartridge at 12V 50W with an NTC 100k 3950 HT-NTC100K thermistor for E3D V6 and Volcano blocks.
Fit for the job 7/10 · Features and specs 8/10 · Build and materials 7/10 · Value 8/10
- + 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
- - 12V heater is wrong for newer higher-voltage printers, so check your supply
- - Title mixes Ender 3 and V6 fitment, so confirm sensor diameter
#7A 4pcs set of 12V 40W ceramic cartridge heaters and 3950 100K NTC thermistors for Anet printers.
Fit for the job 7/10 · Features and specs 7/10 · Build and materials 6/10 · Value 8/10
- + 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
- - 12V heaters will not suit higher-voltage printers like newer Ender models
- - Anet-specific connectors may not fit other brands' boards
#8AYLIFU heater cartridge and 3mm 100K NTC thermistor temp sensor, a basic replacement pair for common hotends.
Fit for the job 6/10 · Features and specs 5/10 · Build and materials 6/10 · Value 7/10
- + 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
- - Check voltage and wattage match your hotend before installing
- - Unknown connector type may require rewiring to your board
Before you buy: trade-offs we flagged
No pick is perfect. These are the main compromises we noted for the top products in this guide, so you can check they will not matter for you.
- Thermistor glass beads are fragile and break if pinched when installed (HICTOP Ender 3 Thermistor with JST Connector...)
- Older blocks with bead holes will not accept cartridge sensors (2-Pack NTC 100K B3950 Thermistor OD3mm...)
- 70W heaters can overheat blocks if firmware thermal protection is off (3Dman 24V 70W Heater Cartridge 620 HT-NTC100K...)
- Artillery-specific fitment limits use on other printer brands (Ucreate NTC 100k Thermistor Heater Cartridge...)
- No connector fitted, so crimping or soldering is usually needed (HiLetgo 10pcs 3D Printer 100K ohm NTC 3950...)
- 12V heater is wrong for newer higher-voltage printers, so check your supply (Ender 3 Heater Cartridge 12V 50W and NTC 100k...)
Frequently asked questions
›What is the best choice among 3d printer thermistors for accurate temps (2026)?
HICTOP Ender 3 Thermistor with JST Connector 1.35m NTC 3950 100k Temp Sensor (Pack of 5) is our top overall pick. HICTOP Ender 3 thermistors with JST connector, 1.35m NTC 3950 100k temp sensors in a pack of 5. It earns our score of 8.4/10, based on fit for the job, features, build and value.
›What is a good budget option?
2-Pack NTC 100K B3950 Thermistor OD3mm Cartridge Sensor 280C for Ender 3 V2 CR10 V6 is the strongest low-cost pick in this guide. A 2-Pack of NTC 100K B3950 cartridge thermistors, OD3mm and rated to 280C, for Ender 3 V2, CR10 and V6 hotends.
›How much should I expect to spend?
Picks in this guide span See on Amazon price bands (roughly: $ = under $30, $$ = $30 to $100, $$$ = over $100). We never display exact prices because they change constantly, so the buttons above always show Amazon's current price.
›How were these products chosen?
We shortlist products that fit the job this guide solves and compare their published specifications, such as size, capacity, materials and what is included. Each pick gets an editorial score out of 10 for fit, features, build and value, and we write the pros and cons from those details. Our score is not an Amazon customer rating. We earn a commission if you buy through our links, which never affects the ranking.
Filament Print Lab independently selects every product; we may earn a commission from links above.
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