Fresa 3D 104NT-4 Thermistor with 145 mm Cable and XH2.54 Connector

Fresa 3D 104NT-4 thermistor with a 145 mm cable and 2-pin XH2.54 connector. It is intended for temperature measurement in hotends and other systems compatible with the 104NT-4 electrical curve.

Features

• Sensor type: 104NT-4 NTC thermistor.
• Cable length: 145 mm.
• Connector: 2-pin XH2.54.
• Brand: Fresa 3D.
• Quantity: 1 unit.

Compatibility

It may replace another 104NT-4 sensor when the electrical curve, mounting arrangement, cable length, connector and pinout all match. A matching connector does not allow direct replacement of a Beta 3950, PT100 or PT1000 sensor.

For an alternative from the same electrical family with a 100 mm cable and GH1.25 connector, see the 104NT-4 Thermistor with 100 mm Cable and GH1.25 Connector.

Firmware configuration

• Marlin 2.1.x: type 5 with a 4.7 kΩ pull-up input. Firmware compilation and installation are required.
• Klipper: sensor_type: ATC Semitec 104NT-4-R025H42G.
• RepRapFirmware 3: for a verified equivalent 104NT-4 curve, configure M308 as a T100000 B4725 C7.06e-8 thermistor.

The commercial brand may differ, but this configuration is only valid when the electrical curve corresponds to the stated 104NT-4 profile. It must not be configured as Generic 3950 merely because both sensors have a nominal resistance of 100K.

Installation

Verify the board pinout before connection. After installation, check the ambient reading and monitor a progressive heating test before enabling elevated temperatures.