5K Ohm NTC Thermistor Temperature Sensor

The 5K Ohm NTC Thermistor Temperature Sensor is a high-precision, cost-effective temperature sensing component that operates on the principle of negative temperature coefficient — as the temperature increases, the resistance decreases. This property makes it extremely useful in temperature control circuits, environmental monitoring, and industrial automation.

With its high sensitivity and stability, this NTC thermistor provides reliable temperature readings across a wide range. The 5KΩ nominal resistance at 25°C allows compatibility with various analog and digital temperature sensing systems. It is widely used in Arduino, ESP32, Raspberry Pi, and other microcontroller-based projects for smart temperature monitoring and automation.

Constructed with durable materials, the thermistor offers fast response time, long service life, and excellent interchangeability, making it suitable for both DIY projects and professional applications such as HVAC systems, home appliances, and power supply protection.

⚙️ Key Features & Highlights:

• 🌡️ Precision NTC Thermistor – Ensures highly accurate temperature measurement.

• 🔌 5K Ohm Resistance at 25°C – Compatible with various control systems.

• ⚡ Fast Thermal Response – Detects quick temperature variations.

• 🧠 Stable & Reliable Output – Ideal for analog and microcontroller interfaces.

• 💡 Wide Operating Range – Performs well in low and high-temperature environments.

• 🛠️ Easy Integration – Works seamlessly with Arduino, ESP32, and Raspberry Pi.

• 🔧 Compact & Durable Design – Long service life with strong thermal stability.

⚙️ Technical Specifications:

⚙️ Working Principle:

An NTC thermistor (Negative Temperature Coefficient) decreases its resistance as temperature rises. This property allows microcontrollers like Arduino UNO or ESP32 to detect precise temperature variations through analog-to-digital conversion.

By using a voltage divider circuit, the thermistor provides an analog signal that can be processed for real-time temperature readings or control applications.

⚙️ Applications & Use Cases:

• 🌡️ Temperature Monitoring Systems – For Arduino & microcontroller projects.

• 🏭 Industrial Automation – Accurate heat detection in control systems.

• 🧰 HVAC Equipment – Air conditioners, heaters, and smart thermostats.

• 🔋 Battery Protection Circuits – Prevents overheating of lithium cells.

• 💻 Computers & Power Supplies – Thermal regulation and safety monitoring.

• 🧠 IoT Smart Systems – Smart home devices for environmental sensing.

• 🧪 Laboratory Devices – Precise temperature control in experiments.

⚙️ Precautions:

• ⚠️ Avoid exceeding the temperature limit of +125°C.

• ⚠️ Keep away from moisture unless sealed type is used.

• ⚠️ Ensure correct polarity and voltage for microcontroller input.

• ⚠️ Handle wires gently to avoid damage to sensor leads.

• ⚠️ Use proper calibration for high-accuracy readings.

▶️ YouTube Tutorial Video:

Watch: Arduino Temperature Measurement using NTC Thermistor Sensor

🔹 Internal Links:

• 🔗 Arduino UNO Board

• 🔗 ESP32 Development Board

• 🔗 Raspberry Pi Accessories

• 🔗 Temperature Sensors Collection