The PTC C945 is a Positive Temperature Coefficient (PTC) thermistor designed and manufactured by EPCOS (TDK). This component is primarily used for overcurrent protection in a wide range of electronic circuits and devices. In the event of an overcurrent or short circuit, the PTC C945 rapidly increases its resistance, limiting the flow of current and protecting sensitive components from damage.

Applications

• Overcurrent protection in electronic circuits
• Short circuit protection
• Protection of motors and transformers
• Power supplies
• Telecommunications equipment

Features

• Positive Temperature Coefficient (PTC) characteristic
• Fast response time to overcurrent conditions
• Compact size for easy integration into various circuits
• High reliability and long operational life
• Lead-free terminations

Benefits

• Effective protection against overcurrents and short circuits
• Prevents damage to sensitive electronic components, extending their lifespan
• Enhances the overall safety and reliability of electronic devices
• Self-resetting functionality allows the circuit to return to normal operation after the fault is cleared
• Environmentally friendly due to lead-free construction

Additional Details

The PTC C945 provides a reliable and efficient solution for overcurrent protection. Its fast response and significant increase in resistance during an overcurrent event ensure effective protection against short circuits and overload conditions. The self-resetting capability allows the circuit to resume normal operation automatically after the fault is resolved, eliminating the need for manual intervention. For specific electrical characteristics, such as trip current, holding current, and maximum voltage, please refer to the official EPCOS (TDK) datasheet. Proper consideration of operating temperature and environmental conditions is crucial for optimal performance and longevity.