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NTC 3950 100K thermistor with 1 metre PTFE wire and black 2.54 mm 2-pin connector

Unique-Bargains

Unique-Bargains 3950 100K Thermistor 1m Wire 2.54mm Pitch

SKU CH-C40H-WBMVD MPN 3950

Pre-wired NTC 3950 100K thermistor with 1 m PTFE-insulated lead and 2.54 mm pitch connector, rated −40 °C to +300 °C

  • Pre-wired head installs directly into compatible heating blocks
  • PTFE insulation withstands up to 300 °C continuous exposure
  • 1 metre lead gives flexible routing inside printer frames
  • 54 mm pitch connector mates with standard controller boards
  • ±1 % accuracy at 100 kΩ ensures reliable temperature control

Purpose & Audience

The Unique-Bargains 3950 is a 100K Ohm NTC thermistor pre-wired with a one metre PTFE-insulated lead and a 2.54 mm pitch two-pin connector. It is intended for RepRap 3D printers that use this resistance curve for hot-end or heated-bed temperature sensing.

Who It Suits & Who Should Look Elsewhere

Builders whose firmware expects a 3950-series 100K thermistor and who need a ready-crimped harness with high-temperature wiring will find it a direct fit. Buyers whose controllers require a different resistance value, a different beta curve or a larger connector pitch should look elsewhere.

Deciding Specification

The single figure that determines compatibility is the 3950 beta value combined with 100K Ohm nominal resistance at the reference temperature; if your printer’s firmware is not configured for that exact pairing the sensor will report incorrect temperatures.

Highlights

  • Pre-wired head installs directly into compatible heating blocks
  • PTFE insulation withstands up to 300 °C continuous exposure
  • 1 metre lead gives flexible routing inside printer frames
  • 54 mm pitch connector mates with standard controller boards
  • ±1 % accuracy at 100 kΩ ensures reliable temperature control

Specifications

BrandUnique Bargains

Questions about this item

Which resistance value suits my 3D printer controller?

The thermistor is a 100K ohm NTC 3950 model, matching the common 100K pull-up used on most RepRap-style boards.

What temperature range does the 3950 100K cover in a hot end?

It measures from -40 °C up to +300 °C, so it handles high-temperature filaments such as ABS, PETG and polycarbonate without exceeding its limit.

What does the 2.54 mm pitch connector limit in practice?

The 2.54 mm two-pin female header fits standard controller headers; the one-metre PTFE-insulated wire reaches most extruder mounts without splicing.

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