MF-FSMF020X-2

Ptc Resettable Fuses Overview

The Bourns MF-FSMF020X-2 is a polymer PTC resettable fuse in the Multifuse MF-FSMF series. It features a 0603 (1608 metric) SMD package with a maximum voltage of 6V and a hold current of 200mA. The trip current is 400mA, with a maximum rated current of 40A. Initial resistance is typically 6 ohms, rising to a maximum of 800 milliohms after tripping. Operating temperature ranges from -40°C to +85°C.

Ptc Resettable Fuses Feature Summary

• Provides overcurrent protection using polymer positive temperature coefficient technology
• Offers compact surface mount design for space-constrained PCB layouts
• Automatically resets after fault conditions clear without manual intervention

Ptc Resettable Fuses Applications

• Portable electronic device circuit protection
• Consumer electronics power line safeguarding
• Communication equipment interface protection

Ptc Resettable Fuses Procurement Notes

Verify component authenticity through authorized Bourns distributors or certified suppliers. Confirm RoHS compliance status and specific packaging configuration matches project requirements. Validate datasheet revisions against manufacturing dates to ensure parameter consistency. Request material declaration statements for regulatory adherence before finalizing procurement orders.

Ptc Resettable Fuses Selection Notes

Select this component when low voltage operation under 6V is required alongside minimal footprint constraints. The 0603 package suits high-density assembly processes. Ensure circuit operating currents remain below the 200mA hold threshold during normal conditions. Verify thermal environment stays within the specified -40°C to +85°C operational range for reliable performance.

Ptc Resettable Fuses Part Context

This part belongs to the Multifuse MF-FSMF series, designed specifically for low-voltage applications. The series utilizes advanced polymer materials to deliver robust circuit protection in miniature surface-mount formats. It addresses the industry demand for reliable overcurrent defense in increasingly compact consumer and industrial electronic devices.

Ptc Resettable Fuses FAQ

What is the maximum working voltage for this component?

The maximum working voltage is 6V DC.

Does this fuse require replacement after a trip event?

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