MF-RHS750-0

Overview

The MF-RHS750-0 is a polymeric positive temperature coefficient (PPTC) resettable fuse manufactured by Bourns Inc. It features a radial leaded through-hole package designed for high-temperature applications. Key electrical parameters include a hold current of 7.5 A, a trip current of 13.1 A to 15 A, and a maximum voltage rating of 16 VDC. The device exhibits a typical resistance of 22 mOhms and can withstand a maximum fault current of 100 A. It operates within a temperature range of -40°C to +125°C and has a power dissipation rating of 4 W to 4.5 W. Physical dimensions include a length of approximately 11.8 mm to 14 mm, a width of 3 mm, and a height of 16.9 mm to 24.3 mm, with a lead spacing of 5.1 mm.

Feature Summary

• Provides overcurrent protection through automatic reset functionality upon cooling after a fault condition.
• Constructed from polymeric materials to ensure reliable performance in high-temperature environments up to 125°C.
• Features a radial leaded form factor suitable for standard printed circuit board mounting.

Applications

• Automotive electronics circuits requiring AEC-Q200 compliance
• High-temperature industrial control systems
• Consumer electronics power input protection

Procurement Notes

Verify the specific datasheet version and manufacturing date code when sourcing this component. Confirm that the radial lead pitch matches the target PCB footprint of 5.1 mm. Ensure the selected variant meets the required thermal endurance specifications for the intended operating environment. Cross-reference the manufacturer part number MF-RHS750-0 with authorized distributor catalogs to confirm availability and authenticity before finalizing procurement orders.

Selection Notes

Select this component for circuits requiring a 7.5 A hold current and 16 VDC maximum voltage rating. Consider the 13.1 A trip current threshold for defining protection sensitivity. Evaluate the 4 W power dissipation capability against ambient thermal conditions. The radial package and 5.1 mm lead spacing dictate the mechanical layout constraints on the printed circuit board design.

Part Context

This part belongs to the MF-RHS series of PTC resettable fuses from Bourns. The series is characterized by its ability to handle high temperatures and provides robust overcurrent protection. It serves as a reusable alternative to traditional one-time fusible links in electronic circuits where maintenance access is limited or frequent replacement is impractical.

Replacement Considerations

Direct substitutes within the same series include MF-RHT750-2, which shares similar electrical ratings but may differ in packaging or specific automotive qualification details. Verify compatibility with existing board layouts and thermal requirements when considering alternative part numbers from the same manufacturer family.