PTGL7SAS3R3K3B51A0

Ptc Resettable Fuses Overview

The Murata PTGL7SAS3R3K3B51A0 is a POSISTOR PTC thermistor designed for PCB mounting. It features a nominal resistance of 3.3 Ohms with a 10% tolerance and a maximum operating voltage of 51 V. The component has a current rating of 3 A and operates within a temperature range of -40°C to +125°C. Physical dimensions include a diameter of 7.3 mm, height of 3.5 mm, and a lead spacing of 5 mm. It utilizes radial termination and holds AEC-Q100 qualification.

Ptc Resettable Fuses Feature Summary

• Provides overcurrent protection through positive temperature coefficient characteristics
• Self-resetting functionality eliminates the need for manual replacement after fault clearance
• Automotive-grade reliability ensured by AEC-Q100 qualification

Ptc Resettable Fuses Applications

• Overcurrent protection in automotive electronic circuits
• Thermal management for power supply ICs
• Circuit protection for FETs and other heat-generating components

Ptc Resettable Fuses Procurement Notes

Verify component authenticity against official Murata documentation due to end-of-life status. Confirm that the specific suffix matches required electrical tolerances and packaging formats. Ensure compatibility with existing PCB footprints regarding lead spacing and thermal requirements before integration into new designs.

Ptc Resettable Fuses Selection Notes

Select this component when high current handling up to 3 A is required alongside precise thermal response. The 51 V rating suits low-voltage automotive systems. Verify that the 3.3 Ohm cold resistance aligns with circuit leakage constraints. Consider the radial package constraints for board layout density compared to surface-mount alternatives.

Ptc Resettable Fuses Part Context

This part belongs to the PTGL series of POSISTOR thermistors manufactured by Murata Electronics. The series is characterized by ceramic construction and radial leads. It serves as a specialized circuit protection device distinct from standard fuses, offering repeated use after tripping events in sensitive electronic environments.

Ptc Resettable Fuses Replacement Considerations

Public confirmed substitute part numbers are not available. This component is listed as End of Life. Engineers must evaluate alternative PTGL series variants or different manufacturers' PTC devices that match the 3.3 Ohm resistance, 3 A current rating, and 51 V voltage specifications.