MF-RHT070-2-17

Overview

The Bourns MF-RHT070-2-17 is a radial leaded polymeric positive temperature coefficient (PPTC) resettable fuse from the MF-RHT series, designed for high-temperature applications. It features a hold current of 0.7 A and a trip current of 1.4 A at ambient conditions. The device supports a maximum voltage of 30 V DC and offers a maximum fault current rating of 40 A. Its initial resistance is 800 mΩ max. The component operates within a temperature range of -40°C to +125°C with a standard lead spacing of 5.1 mm.

Feature Summary

• Provides automatic circuit protection through reversible tripping action upon overcurrent or excessive temperature events.
• Engineered for reliable performance in elevated thermal environments up to 125°C.
• Utilizes a radial leaded package configuration suitable for printed circuit board mounting.

Applications

• Overcurrent protection in consumer electronic devices
• Circuit safeguarding in industrial instrumentation equipment
• Protection within power supply units and adapters

Procurement Notes

Verify specific RoHS compliance status directly via the manufacturer datasheet, as regulatory documentation may vary by production batch. Confirm that the radial lead pitch matches the target PCB footprint requirements prior to integration. Ensure the selected variant aligns with the required high-temperature operational specifications for the intended application environment.

Selection Notes

Select this component when circuit protection requires operation in high-temperature environments exceeding standard limits. The 0.7 A hold current and 30 V rating suit low-voltage DC circuits. Verify that the 40 A interrupt rating accommodates potential fault currents. Consider the radial lead form factor for through-hole assembly processes requiring robust mechanical anchoring.

Part Context

This part belongs to the Bourns MF-RHT series of high-temperature PPTC resettable fuses. The series is characterized by enhanced thermal stability compared to standard PTC devices. The MF-RHT designation indicates specific material properties optimized for sustained operation under elevated thermal stress conditions common in demanding industrial and automotive-grade applications.

Replacement Considerations

Consult official Bourns substitution guides for verified alternatives. Cross-reference hold current, trip current, voltage rating, and package dimensions to ensure functional compatibility. Generic PTC replacements may not match the specific high-temperature performance characteristics of the MF-RHT series.