MF-S175

Overview

The Bourns MF-S175 is a strap-mount PTC resettable fuse from the MF-S series, designed for overcurrent protection in low-voltage circuits. It features axial leads and a compact form factor with dimensions of approximately 23.1 mm in length, 5.05 mm in width, and 1.00 mm in thickness. The device maintains a holding current of 1.75 A and trips at 3.8 A, operating within a voltage range up to 15 V. It exhibits a typical resistance of 50 mOhms at 25°C and can withstand fault currents up to 100 A. The component functions reliably across an operating temperature range of -40°C to +85°C.

Feature Summary

• Self-resetting polymeric positive temperature coefficient (PPTC) technology provides automatic circuit recovery after fault clearance without manual replacement.
• Strap mount configuration with axial leads facilitates secure attachment to printed circuit boards or direct wiring connections.
• High fault current capability allows the device to handle significant surge events while maintaining structural integrity during operation.

Applications

• Battery pack protection in portable electronic devices
• Overcurrent safeguarding for USB peripheral interfaces
• Protection circuits for automotive electronics modules

Procurement Notes

Verify that the specific order matches the MF-S175 designation to ensure correct electrical ratings. Confirm compliance with RoHS directives if required by project specifications. Check manufacturer documentation for handling precautions related to soldering temperatures and thermal management during installation.

Selection Notes

Choose this component when a low-profile, high-current resettable fuse is needed for battery or power line protection. Ensure the circuit's normal operating current remains below the 1.75 A holding threshold. Verify that the maximum system voltage does not exceed the 15 V rating to prevent dielectric breakdown during fault conditions.

Part Context

This part belongs to the Bourns MF-S series of strap-mount PTC resettable fuses. The series is characterized by its robust construction and suitability for applications requiring reliable overcurrent protection in space-constrained environments. The MF-S variant specifically targets markets demanding durable components for industrial and consumer electronics.

Replacement Considerations

Direct substitutes include other MF-S series variants with matching electrical characteristics. Cross-reference datasheets to confirm identical holding current, trip current, and voltage ratings before implementation.