MF-LR380

Ptc Resettable Fuses Overview

The Bourns MF-LR380 is a high-current, leaded PolySwitch resettable fuse from the MF-LR series. It features axial leads for strap mounting and operates within a voltage range of up to 15 VDC. The device maintains a holding current of 3.8 A and trips at 8.3 A. It offers a maximum fault current rating of 100 A and exhibits a low initial resistance of 26 mΩ. The component functions reliably across an operating temperature range of -40°C to +85°C.

Ptc Resettable Fuses Feature Summary

• Provides automatic circuit protection through self-resetting PPTC technology
• Designed for high-current applications with robust fault handling capabilities
• Utilizes axial leads for secure strap mounting configurations

Ptc Resettable Fuses Applications

• Overcurrent protection in power supply circuits
• Protection for portable electronic devices
• Industrial control system circuit safeguarding

Ptc Resettable Fuses Procurement Notes

Verify the specific ordering suffix to confirm package type and tape/reel specifications if applicable. Ensure the selected variant matches the required axial lead configuration for strap mounting. Confirm RoHS compliance status and check for any recent datasheet revisions that may impact thermal or electrical performance parameters before finalizing procurement.

Ptc Resettable Fuses Selection Notes

Select this component when designing circuits requiring high fault current interruption capability up to 100 A. The 3.8 A holding current suits moderate load protection needs. Consider the 15 VDC maximum voltage limit for low-voltage applications. Evaluate the 26 mΩ resistance impact on power loss and ensure the ambient temperature stays within the specified -40°C to +85°C operational window for reliable tripping behavior.

Ptc Resettable Fuses Part Context

This part belongs to the Bourns MF-LR series of high-current resettable fuses. These components are engineered for demanding environments where standard fuses are impractical due to replacement costs or accessibility issues. The series provides a cost-effective alternative to traditional fusible links while maintaining safety standards in consumer and industrial electronics.

Ptc Resettable Fuses Replacement Considerations

Consult official Bourns substitution guides for direct equivalents. Verify that any substitute maintains the 3.8 A holding current and 15 VDC rating. Ensure physical dimensions and lead spacing match the existing strap mount footprint to avoid PCB redesign requirements.