MF-FSHT005KX-2

Ptc Resettable Fuses Overview

The Bourns MF-FSHT005KX-2 is a surface-mount polymer PTC resettable fuse designed for high-temperature circuit protection. It features a holding current of 50 mA and a trip current of 250 mA, with a maximum voltage rating of 12 VDC. The device has a maximum resistance of 30 Ohms and a rated current of 40 A. It operates within a temperature range of -40°C to +125°C and dissipates 500 mW. The component measures 1.85 mm in length, 1.05 mm in width, and 0.65 mm in height.

Ptc Resettable Fuses Feature Summary

• Provides overcurrent protection using polymer positive temperature coefficient technology.
• Engineered for reliable operation in high-temperature environments up to 125°C.
• Offers compact surface-mount packaging suitable for space-constrained layouts.

Ptc Resettable Fuses Applications

• High-temperature automotive circuit protection
• Overcurrent protection for portable consumer electronics
• Surge protection in industrial communication systems

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix 'X-2' against the official datasheet to confirm package type and tape/reel specifications. Ensure the selected variant matches the required 12VDC rating and 50mA holding current for the target application. Confirm RoHS compliance status through the manufacturer's latest documentation before integration.

Ptc Resettable Fuses Selection Notes

Select this component when the application requires a low-profile SMD fuse capable of withstanding elevated ambient temperatures. The 12VDC rating limits its use to low-voltage circuits, while the 50mA holding current suits sensitive signal lines or low-power modules. Verify that the 30 Ohm resistance does not impact circuit performance during normal operation.

Ptc Resettable Fuses Part Context

This part belongs to the Multifuse series of polymer PTC resettable fuses manufactured by Bourns. These devices are designed to replace traditional fusible links in applications requiring automatic recovery after fault conditions. The high-temperature variant ensures stability in harsh operating environments where standard components might fail prematurely.

Ptc Resettable Fuses Replacement Considerations

Direct substitutes must match the 0603 footprint, 50mA holding current, and 12VDC voltage rating. Verify thermal characteristics and resistance values to ensure equivalent protection levels. Cross-reference with other Bourns high-temperature PPTC series if dimensional constraints allow for minor adjustments.

Ptc Resettable Fuses FAQ

What is the maximum operating temperature for this component?

The MF-FSHT005KX-2 is rated for a maximum operating temperature of +125°C.

Does this fuse require manual replacement after tripping?

No, it is a resettable fuse that automatically returns to a low-resistance state once the fault condition is removed and the device cools down.