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Five small glass-bead thermistors with two wire leads each

Unique-Bargains

Unique-Bargains 3950 100K Ohm Thermistor 5 pcs

SKU CH-3S84-X7MWP MPN 3950

Five NTC 3950 thermistors rated 100K Ohm ±1% for 3D printer extruders and heated beds from -40 °C to 250 °C

  • Accurate readings with ±1 % tolerance across the full range
  • Operates from -40 °C to +250 °C for high-temperature filaments
  • Compatible with Ender 3, Ender 5, CR-10 and similar printers
  • Five thermistors per pack keep spares on hand for quick swaps
  • NTC 3950 100K Ohm model fits standard heating blocks

3D printer thermistor pack

This set contains five NTC 3950 thermistors rated at 100K Ohm with ± 1% accuracy. They are made for the extruder hot end or heated bed of RepRap-style printers such as Ender 3, Ender 3 Pro, Ender 5, CR-10 and CR-10S.

Fits heating blocks with thermocouple support

Each sensor mounts in a standard heating block that accepts a thermocouple-style probe. The five-piece bundle lets you keep spares on hand so a single failure does not halt a print farm or a long overnight job.

Stable up to 250 °C continuous

The thermistors measure from -40 °C to +250 °C, covering the full range needed for high-temperature filaments. Resistance stays within the stated tolerance during extended heating cycles, giving reliable closed-loop control without drift.

How it compares

Measured against everything we stock in Print & Scan Accessories, at today’s prices. Recalculated every night.

Price $4.99
Cheaper than about 99% of the 5,855 comparable items (median $91.99).

Specifications

Product
Brand nameUnique Bargains

Questions about this item

What is the maximum temperature the 3950 100K Ohm thermistor can measure before it hits its limit?

The thermistor measures up to 250 °C or 482 °F, which is the upper bound of its specified temperature range.

How much heat does the thermistor itself generate during continuous operation in a heated bed?

As a passive NTC sensor the thermistor generates negligible self-heating; the 100K Ohm resistance and ±1% accuracy are maintained across the -40 °C to 250 °C range.

Which connector or interface must my printer's control board provide for this thermistor to work?

The thermistor uses a standard two-wire lead that connects directly to the temperature-sensor header on boards used in RepRap, Ender 3, Ender 5 or CR-10 machines.

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