The PTCTT95R350GTE002 is a Positive Temperature Coefficient (PTC) thermistor from Vishay. This component is designed primarily for providing overcurrent protection in various electronic applications. It functions as a resettable fuse, increasing its resistance dramatically when an overcurrent event occurs, thereby limiting the current and protecting downstream components.

Applications

• Overcurrent protection in USB ports
• Protection of portable electronic devices
• Overload protection in power supplies
• Short-circuit protection in automotive applications
• General circuit protection in electronic equipment

Features

• Positive Temperature Coefficient (PTC) characteristics
• Surface mount design for automated assembly
• Resettable overcurrent protection functionality
• Fast response time to overcurrent conditions
• Low resistance during normal operating conditions
• RoHS compliant

Benefits

• Provides reliable and resettable overcurrent protection
• Eliminates the need for manual fuse replacement
• Reduces downtime due to overcurrent faults
• Offers quick protection response to limit damage
• Minimizes power loss in normal operation
• Complies with environmental regulations

Additional Details

The PTCTT95R350GTE002 operates by maintaining a low resistance under normal operating conditions. When an overcurrent event occurs, the thermistor heats up rapidly, causing a significant increase in its resistance. This increase limits the current flowing through the circuit, protecting sensitive components from damage. Once the overcurrent condition is removed, the thermistor cools down and its resistance returns to its normal low value, allowing the circuit to resume operation. The hold current, trip current, and maximum voltage are critical parameters for selecting the correct PTC for an application. Consult the Vishay datasheet for detailed electrical and thermal characteristics, including resistance values, temperature coefficients, and mechanical dimensions. The surface mount design facilitates automated PCB assembly.