The 15K PTC Positive Temperature Coefficient Thermistor MZ5 is a temperature-sensitive resistor with a nominal resistance of 15K ohms at room temperature. This thermistor increases its resistance as the temperature rises, making it ideal for overcurrent protection, temperature sensing, and thermal regulation applications. It is commonly used in circuits where it can protect against overheating by limiting the current flow when a certain temperature threshold is reached. The MZ5 model is suitable for use in power supplies, motor controllers, and other electronic devices requiring temperature protection and regulation. It ensures the safety and longevity of the circuit by automatically adjusting the resistance as temperature changes.