PTSA181230V030

Ptc Resettable Fuses Overview

The PTSA181230V030 is a PolyTron PTC resettable fuse manufactured by Eaton Electronics Division. It features a 30 VDC maximum voltage rating and a 300 mA hold current. The trip current is specified at 600 mA, with a maximum fault current rating of 10 A. The device utilizes an 1812 (4532 metric) surface-mount package with concave termination. It operates within a temperature range of -40°C to +85°C. Initial resistance is typically low, while tripped resistance remains below 15 Ohms.

Ptc Resettable Fuses Feature Summary

• Automotive-grade polymer construction for reliable overcurrent protection
• Surface-mount design with concave terminations for PCB integration
• Self-resetting functionality eliminates manual replacement after fault clearance

Ptc Resettable Fuses Applications

• Automotive electronic circuit protection
• Portable device power line safeguarding
• Consumer electronics overcurrent defense

Ptc Resettable Fuses Procurement Notes

Verify the specific datasheet version corresponding to the PTSA1812 series before procurement. Confirm that the automotive-grade classification aligns with your application requirements. Ensure the 1812 footprint dimensions match your PCB layout constraints. Cross-reference the hold and trip currents against your circuit's normal operating parameters to prevent nuisance tripping during startup or transient loads.

Ptc Resettable Fuses Selection Notes

Select this component when a 30 VDC system requires protection against overcurrent events up to 10 A. The 300 mA hold current suits low-power signal lines or peripheral circuits. Consider the 1812 package size for space-constrained designs. Evaluate the thermal environment to ensure operation stays within the -40°C to +85°C range. Compare initial resistance values if voltage drop is critical in the application.

Ptc Resettable Fuses Part Context

This part belongs to the PTSA1812 series of PolyTron devices from Eaton Electronics. These are specialized polymer positive temperature coefficient resettable fuses designed for surface-mount technology. The series offers various current ratings within the same physical footprint, allowing designers to standardize board layouts while adjusting protection thresholds for different circuit branches.

Ptc Resettable Fuses Replacement Considerations

Direct substitutes include other PTSA1812 variants with matching voltage and current ratings. Verify equivalent automotive qualification status when replacing. Ensure the replacement maintains the 1812 concave package profile for proper solder joint formation.