YQS5751PTO

Overview

The YQS5751PTO is a ceramic PTC resettable fuse manufactured by Amphenol Advanced Sensors. It features a radial disc package design suitable for through-hole mounting. The component operates at a maximum voltage of 25 V and functions as a standard positive temperature coefficient thermistor with a resistance tolerance of +/-30%. This device provides overcurrent protection by increasing resistance significantly upon thermal activation, resetting automatically once cooled.

Feature Summary

• Ceramic construction for robust environmental stability
• Automatic reset functionality after fault clearance
• Radial leaded disc form factor for easy integration

Applications

• Overcurrent protection in low-voltage electronic circuits
• Battery pack protection systems
• Consumer electronics power input stages

Procurement Notes

Verify the specific datasheet revision to confirm exact hold and trip current ratings, as these are critical for circuit protection design. Ensure the radial lead configuration matches the PCB footprint requirements. Confirm RoHS compliance status if required for the target assembly process. Cross-reference the 25V rating against the actual operating voltage to maintain adequate safety margins during normal operation.

Selection Notes

Select this component when a resettable fuse solution is preferred over one-time fuses for maintenance efficiency. The 25V rating limits its use to low-voltage applications. Consider the physical size constraints imposed by the radial disc package. Evaluate the thermal environment to ensure the trip characteristics align with the system's operational temperature range and fault conditions.

Part Context

This part belongs to the Thermometrics line of PTC devices from Amphenol Advanced Sensors. These components are designed for circuit protection rather than precise temperature sensing. The product family focuses on reliable, self-resetting protection mechanisms for consumer and industrial electronics requiring compact overcurrent safeguards.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.