B3950 100K NTC Thermistor Temperature Sensor 3x25mm with XH2.54 Connector & 1 Meter Cable

This thermistor uses the B3950 specification, meaning its Beta (B) value is 3950 Kelvin. This parameter defines the resistance-temperature curve between two reference points (typically 25°C and 85°C). It is critical for accurate temperature calculation in your firmware, as using the correct B value in the Steinhart-Hart equation ensures precise readings from the measured resistance.

The thermistor is a passive resistive sensor. You must create a voltage divider circuit by connecting it in series with a fixed precision resistor (e.g., 100kΩ) between your microcontroller's analog reference voltage and ground. The junction between the thermistor and resistor connects to an analog input pin. The microcontroller reads the varying voltage, which you then convert to resistance and finally to temperature using the B3950 coefficients in your code.

The XH2.54 connector is a standard 2.54mm pitch (0.1-inch) crimp connector commonly used on prototyping boards and many sensor modules. It allows for tool-free, reliable connections to matching female headers, simplifying wiring and reducing the need for soldering. Ensure your receiving board or cable has a compatible 2-pin XH female header for plug-and-play operation.

Yes, the epoxy-sealed probe is suitable for measuring non-corrosive liquid temperatures. Ensure the entire sensing portion (the 25mm length) is submerged for an accurate reading. The operating range of -40°C to 125°C covers most liquid applications, from chilled water to hot water systems. Avoid exposing the cable connector or solder joints to moisture.