Trianglelab 104GT-2 Thermistor Cartridge with Semitec 104NT-4-R025H42G

High-precision Trianglelab thermistor cartridge built around a Semitec 104NT-4-R025H42G sensor, also identified as 104GT-2. It includes mechanical protection, high-temperature wiring and a 1 metre extension for installation in a compatible hotend.

Features

• 100K Semitec 104NT-4-R025H42G sensor with a declared ±3% tolerance.
• 104GT-2 equivalent profile.
• Stainless-steel protection spring.
• Glass-fibre braided sleeve rated up to 300 °C.
• 26 AWG UL1332 silicone wire rated up to 200 °C.
• 2-pin male and female MX3.0 connector.
• 1 m extension with a 2-pin XH2.54 connector.

Compatibility

It may replace a 104GT-2 or 104NT-4-R025H42G when the mounting arrangement, connector, pinout and assembly temperature range also match. It is not equivalent to a Beta 3950 thermistor merely because both have a nominal resistance of 100K.

The Fresa 3D 104NT-4 Thermistor with 145 mm Cable and XH2.54 Connector and Fresa 3D 104NT-4 Thermistor with 100 mm Cable and GH1.25 Connector use the same curve family but have different connections and constructions.

Firmware configuration

• Marlin 2.1.x: #define TEMP_SENSOR_0 5 for an input with a 4.7 kΩ pull-up. Firmware compilation and installation are required.
• Klipper: sensor_type: ATC Semitec 104NT-4-R025H42G.
• RepRapFirmware 3: configure M308 as a T100000 B4725 C7.06e-8 thermistor, using the actual board pin.

Installation

The temperature limit must consider the complete assembly rather than the sensing element alone. Keep connectors and lower-temperature cable sections away from the heater block. Check the cold reading and monitor a progressive heating test before operating the hotend.