MF-SM030-2

Overview

The Bourns MF-SM030-2 is a surface-mount polymer positive temperature coefficient (PPTC) resettable fuse designed for overcurrent protection. It belongs to the MF-SM series and features a compact 1206 (3216 metric) package suitable for automated assembly. The device maintains a holding current of 0.30 A and trips at a minimum current of 0.60 A. It supports a maximum voltage of 33 VDC and can withstand a maximum fault current of 40 A. The component exhibits a typical resistance of 5.0 ohms and operates within a temperature range of -40°C to +85°C.

Feature Summary

• Provides automatic circuit recovery after fault conditions without manual replacement
• Offers robust overcurrent and surge protection in a compact surface-mount footprint
• Eliminates nuisance tripping caused by ambient temperature variations

Applications

• Portable electronic devices requiring space-constrained protection
• Battery packs and power management circuits
• Communication equipment interface protection

Procurement Notes

Verify the specific suffix designation against the official Bourns datasheet to confirm exact electrical tolerances and packaging configurations. Ensure that the selected variant matches the required thermal and electrical ratings for the target application environment. Cross-reference the manufacturer part number with authorized distributors to confirm authenticity and availability status prior to procurement.

Selection Notes

Select this component based on the required holding current of 0.30 A and the 33 VDC maximum voltage rating. Consider the 1206 package size for board layout constraints and verify compatibility with standard surface-mount reflow soldering profiles. Evaluate the trip current threshold relative to the normal operating current to ensure reliable protection without false activation during transient loads.

Part Context

This component is part of the Bourns Multifuse MF-SM series, which provides high-reliability PPTC protection solutions. The series is engineered for applications demanding compact form factors and consistent performance across varying thermal conditions. These devices serve as cost-effective alternatives to traditional fuses by offering reusable circuit protection capabilities.

Replacement Considerations

Consult the official Bourns replacement guide for direct equivalents or upgraded variants within the MF-SM family. Verify that any substitute part maintains identical voltage, current, and thermal specifications to ensure circuit integrity.