MF-RX025/72-0

Overview

The Bourns MF-RX025/72-0 is a radial leaded PPTC resettable fuse from the Multifuse MF-RX/72 series. It features a hold current of 250 mA and a trip current of 500 mA, rated for a maximum voltage of 72 VDC. The device has a typical resistance of 1.95 Ohms and a power dissipation of 450 mW. It operates within a temperature range of -40°C to +85°C with a 5.1 mm lead spacing. Maximum fault current rating is 40 A.

Feature Summary

• Provides automatic circuit protection against overcurrent conditions through positive temperature coefficient polymer technology.
• Offers repeatable protection by resetting automatically after cooling down, eliminating the need for manual replacement.

Applications

• Overcurrent protection in LED driver circuits
• Current limiting and surge suppression in electronic assemblies
• Protection against thermal overload in low-voltage DC systems

Procurement Notes

Verify the specific ordering suffix to confirm packaging configuration. The '-AP' suffix typically denotes Ammo Pack packaging, while '-0' may indicate Bulk packaging. Confirm the required package type matches your automated assembly or manual insertion process before finalizing procurement orders.

Selection Notes

Select this component when a compact, low-current protection solution is required for 72V DC applications. Ensure the hold current exceeds the normal operating current and the trip current accommodates transient surges without nuisance tripping. Verify that the physical dimensions fit the PCB layout constraints.

Part Context

This part belongs to the Bourns Multifuse MF-RX/72 series of high-reliability resettable fuses. The series is designed for space-constrained applications requiring robust overcurrent protection. It serves as an alternative to traditional fusible links in consumer electronics and industrial control modules.

Replacement Considerations

Direct substitutes include other MF-RX025/72 variants with different packaging suffixes, such as MF-RX025/72-AP. Cross-series replacements require matching hold current, voltage rating, and physical footprint specifications.