680 Ohm NTC Thermistor Temperature Sensor

The 680 Ohm NTC Thermistor Temperature Sensor is a high-precision Negative Temperature Coefficient (NTC) resistor designed for accurate temperature measurement, thermal compensation, and overheating protection in a wide range of electronic circuits. With a nominal resistance of 680 Ohms (680Ω) at 25°C, this thermistor offers fast thermal response, excellent sensitivity, and dependable long-term stability, making it suitable for both consumer and industrial electronic applications.

Unlike a conventional fixed resistor, an NTC thermistor changes its resistance according to the surrounding temperature. As the temperature increases, the resistance of the thermistor decreases in a predictable manner. This characteristic enables electronic circuits and microcontrollers to accurately detect temperature changes and perform essential functions such as regulating battery charging, controlling cooling fans, monitoring heating elements, and protecting sensitive components from overheating.

Manufactured using high-quality semiconductor ceramic materials, the 680 Ohm NTC Thermistor delivers excellent thermal sensitivity, rapid response time, low power consumption, and stable electrical performance over long periods of operation. Its rugged construction ensures reliable performance even in demanding environments where continuous temperature monitoring is required.

The thermistor features a through-hole radial lead design, allowing quick and secure installation on printed circuit boards (PCBs), prototype boards, and embedded electronic systems. Its compact size makes it easy to integrate into new circuit designs as well as repair and replacement applications.

The 680 Ohm NTC Thermistor is widely used in Battery Management Systems (BMS) to monitor battery temperature and prevent overheating during charging and discharging. It is also commonly found in lithium battery packs, SMPS power supplies, LED driver circuits, motor controllers, HVAC systems, home appliances, automotive electronics, industrial automation equipment, robotics, medical devices, and consumer electronics, where reliable temperature sensing is essential for safe and efficient operation.

This thermistor is fully compatible with popular development platforms including Arduino, ESP32, ESP8266, Raspberry Pi, STM32, and other microcontroller-based systems. When connected in a voltage divider circuit, the changing resistance can be measured using an analog input, allowing software to accurately calculate temperature for monitoring, automation, and control applications.

Whether you are designing a smart electronic system, developing an IoT device, repairing electronic equipment, or building a DIY electronics project, the 680 Ohm NTC Thermistor Temperature Sensor provides accurate temperature sensing, dependable performance, and long operational life.

Working Principle

The thermistor operates according to the Negative Temperature Coefficient (NTC) principle:

• At 25°C, the thermistor has a resistance of 680Ω.

• As the surrounding temperature increases, its resistance decreases.

• As the temperature decreases, its resistance increases.

• The resistance variation is measured by a control circuit or microcontroller.

• The measured resistance is converted into temperature data.

• Based on the detected temperature, the system can regulate cooling, control charging circuits, activate thermal protection, or generate warning signals.

Key Features

• Nominal resistance: 680Ω (680 Ohms) at 25°C

• Negative Temperature Coefficient (NTC)

• Accurate temperature sensing

• Fast thermal response

• High temperature sensitivity

• Stable electrical performance

• Low power consumption

• Through-hole radial lead design

• Durable semiconductor construction

• Easy PCB mounting

• Long operational life

• Reliable performance in demanding environments

Applications

The 680 Ohm NTC Thermistor is widely used in:

• Temperature monitoring systems

• Battery Management Systems (BMS)

• Lithium battery packs

• Arduino projects

• ESP32 development boards

• ESP8266 IoT projects

• Raspberry Pi electronics

• STM32 embedded systems

• SMPS power supplies

• LED driver circuits

• Motor controllers

• HVAC systems

• Home appliances

• Automotive electronics

• Industrial automation

• Medical equipment

• Robotics projects

• IoT devices

• DIY electronics

• Electronic repair and maintenance

Conclusion

The 680 Ohm NTC Thermistor Temperature Sensor is a reliable and high-performance temperature-sensing component designed for modern electronic systems. Its fast response time, high sensitivity, stable electrical characteristics, and low power consumption make it an excellent choice for battery management systems, embedded electronics, industrial automation, IoT devices, robotics, consumer electronics, automotive systems, and educational projects. Whether used in professional equipment or DIY applications, this thermistor delivers precise temperature monitoring, dependable thermal protection, and long-lasting performance.