The NTC Thermistor is a compact, temperature-sensitive resistor designed for temperature measurement, monitoring, and compensation in electronic circuits.

NTC (Negative Temperature Coefficient) thermistors decrease in resistance as temperature increases, allowing electronic systems to detect temperature changes by measuring resistance.

Featuring a small bead-type design with two wire leads, this thermistor is suitable for Arduino projects, electronic temperature monitoring, battery systems, and DIY applications.

Available in 1KΩ, 10KΩ, and 100KΩ resistance variants.

Key Features

• NTC Temperature Sensing: Resistance decreases as temperature increases.
• Three Resistance Options: 1KΩ, 10KΩ, and 100KΩ.
• Compact Bead Design: Suitable for installation in small electronic devices.
• Two-Wire Connection: Simple integration into electronic circuits.
• Analog Temperature Measurement: Can be used in a voltage divider circuit.
• Microcontroller Compatible: Suitable for Arduino, ESP32, Raspberry Pi Pico, and other development boards with appropriate analog input circuitry.
• Passive Component: Does not require a dedicated power supply.
• Temperature Monitoring: Suitable for detecting temperature changes in electronic systems.

Technical Specifications

Note: Nominal resistance is typically specified at 25°C (R25). The exact B-value, resistance tolerance, and operating temperature range depend on the thermistor variant and should be verified against its datasheet.

Pin Configuration

The thermistor is non-polarized, so either lead can be connected in either direction.

Arduino Connection Example

A thermistor can be connected to an Arduino using a voltage divider circuit.

Example using a 10KΩ NTC thermistor:

1. Connect one thermistor lead to 5V.
2. Connect the other thermistor lead to Arduino analog pin A0.
3. Connect a 10KΩ fixed resistor between A0 and GND.
4. Read the analog voltage to monitor temperature changes.

For accurate temperature calculation, use the thermistor's resistance-temperature characteristics or Beta coefficient.

Applications

• Temperature Measurement and Monitoring
• Arduino and ESP32 Projects
• Battery Temperature Monitoring
• Electronic Temperature Compensation
• DIY Thermometers
• Heating and Cooling Control Circuits
• Power Supply Temperature Monitoring
• Home Automation Projects
• Educational Electronics
• Temperature-Sensitive Alarm Circuits

Important Notes

• Select the appropriate resistance variant before purchasing.
• The 1KΩ, 10KΩ, and 100KΩ versions require different voltage divider resistor selections for optimal measurement.
• The thermistor does not directly output a temperature value or digital signal.
• An analog measurement circuit is required to convert resistance changes into a measurable voltage.
• Accurate temperature calculation requires the appropriate resistance-temperature curve or Beta coefficient.
• Avoid excessive measurement current, as self-heating can affect accuracy.
• For Raspberry Pi boards without analog inputs, an external ADC is required.

Package Includes

• 1 × NTC Thermistor (Selected Resistance Variant)