MF-S150

Overview

The Bourns MF-S150 is a surface-mount polymeric positive temperature coefficient (PPTC) resettable fuse designed for circuit protection. It features a hold current of 1.5 A and a trip current of 3 A, ensuring reliable operation under normal conditions while responding to overcurrent events. The device supports a maximum voltage of 15 VDC and can withstand a maximum fault current of 100 A. With a typical resistance of 90 mΩ, it offers low power loss during steady-state operation. The component operates within a temperature range of -40°C to +85°C and is housed in a compact package measuring 12.4 mm in length, 11 mm in width, and 1.1 mm in height.

Feature Summary

• Provides automatic circuit protection against overcurrent and overheating conditions through self-resetting functionality.
• Designed for surface-mount technology (SMD/SMT) integration into printed circuit boards.
• Utilizes polymeric PPTC material that increases resistance significantly upon thermal activation.

Applications

• Portable electronic devices requiring compact overcurrent protection
• Consumer electronics circuits needing resettable fuse solutions
• Industrial equipment control panels

Procurement Notes

Verify the specific datasheet version for the MF-S150 to confirm exact dimensional tolerances and electrical characteristics prior to design finalization. Ensure compatibility with standard reflow soldering profiles used for SMD components. Confirm RoHS compliance status if required by your manufacturing standards. Cross-reference the maximum operating voltage and current ratings with your circuit's worst-case scenarios to ensure adequate safety margins.

Selection Notes

Select this component when a low-profile, surface-mount resettable fuse is required for 15 VDC systems. The 1.5 A hold current makes it suitable for protecting low-power circuits. Consider the 100 A maximum fault current rating for surge tolerance. Evaluate the 90 mΩ resistance impact on power consumption. Compare physical dimensions against available board space constraints.

Part Context

This part belongs to the Bourns MF series of resettable fuses, which are widely used for overcurrent protection in various electronic applications. The MF series offers different hold currents and voltage ratings to suit diverse circuit requirements. These devices serve as alternatives to traditional one-time fuses, providing convenience through their ability to reset automatically after the fault condition is removed.

Replacement Considerations

Direct substitutes may include other Bourns MF series parts with similar electrical ratings, such as MF-S075 or MF-S225, depending on the specific current requirements. Verify that any replacement maintains the same voltage rating, package type, and thermal characteristics to ensure proper circuit function and reliability.