MF-USHT010KX-2

Overview

The Bourns MF-USHT010KX-2 is a surface-mount polymeric positive temperature coefficient (PPTC) resettable fuse from the Multifuse MF-USHT series. Designed for high-temperature environments, it features a hold current of 100 mA and a trip current of 500 mA. The device supports a maximum voltage of 30 VDC with a maximum rated current of 20 A. It exhibits an initial resistance of 7.5 Ohms and operates within a temperature range of -20°C to +125°C. Housed in a compact 1210 (3225 metric) package measuring 3.2 mm by 2.5 mm, this component provides reliable circuit protection against overcurrent conditions.

Feature Summary

• High-temperature capability suitable for demanding thermal environments
• Surface-mount design for automated assembly processes
• Self-resetting functionality eliminates need for manual replacement after fault clearance

Applications

• Overcurrent protection in portable electronic devices
• Circuit safeguarding in automotive electronics
• Protection for industrial control systems
• Surge protection in telecommunications equipment

Procurement Notes

Verify that the specific suffix X-2 aligns with your required packaging format, such as cut tape or reel quantities. Confirm RoHS compliance status through official documentation prior to integration. Ensure the 1210 footprint matches your PCB layout constraints. Validate that the 30 VDC rating meets your system's maximum operating voltage requirements under all conditions.

Selection Notes

Select this component when high-temperature stability is critical for circuit reliability. The 100 mA hold current suits low-power signal lines requiring precise protection thresholds. Consider the 7.5 Ohm initial resistance impact on signal integrity. The 1210 package offers a balance between current handling capacity and board space efficiency compared to smaller footprints.

Part Context

This part belongs to the Bourns Multifuse MF-USHT series, which expands the company's portfolio of high-temperature PPTC resettable fuses. The series is engineered to withstand elevated ambient temperatures while maintaining consistent tripping characteristics. It complements other Bourns circuit protection solutions by offering robust performance in applications where standard PPTC devices might fail due to thermal stress.

Replacement Considerations

Consult official substitution guides for equivalent parts within the same series or compatible families. Verify that any alternative maintains identical voltage, current, and temperature ratings. Ensure mechanical compatibility with the 1210 package dimensions. Cross-reference datasheets to confirm matching electrical parameters before finalizing any swap.