MF-RHS900-0

Overview

The Bourns MF-RHS900-0 is a polymer PTC resettable fuse from the Multifuse MF-RHS series, designed for high-temperature circuit protection. It features an 8 A hold current (Ih) and a 16 V maximum voltage rating. The device trips at 16 A with a maximum trip time of 8 seconds. Initial resistance is typically 0.006 Ohms, rising to a maximum of 0.0145 Ohms after tripping. Rated for operation between -40°C and 125°C, it utilizes radial leaded, disc-style packaging for through-hole mounting.

Feature Summary

• High-temperature polymer construction suitable for demanding thermal environments
• Self-resetting functionality eliminates the need for manual replacement after fault clearance
• Robust overcurrent protection against short circuits and excessive load conditions

Applications

• Automotive circuit protection systems
• Industrial instrumentation power supplies
• Telecommunications equipment input stages
• Consumer electronics power management

Procurement Notes

Verify the specific suffix '0' corresponds to the standard reel or bulk packaging configuration required for your assembly line. Confirm that the radial leaded form factor aligns with your PCB footprint design. Ensure the 16V rating meets the system's maximum operating voltage under all transient conditions. Cross-reference the 8A hold current against the continuous load requirements to prevent nuisance tripping during normal operation.

Selection Notes

Select this component when high ambient temperatures up to 125°C are present, as standard PPTCs may fail in these conditions. The radial leaded package is preferred for applications requiring mechanical robustness or automated through-hole insertion. Ensure the 16V rating is sufficient for the DC bus voltage. Consider the 0.006 Ohm initial resistance impact on power loss if efficiency is critical. Verify certification requirements such as cUL or cURus for the target market.

Part Context

This part belongs to the Bourns Multifuse MF-RHS series, which specializes in high-temperature PTC resettable fuses. Unlike standard polymeric devices, the MF-RHS series is engineered to maintain performance in elevated thermal environments, making it distinct from the lower-temperature MF-RH or MF-USHT lines. It serves as a reusable alternative to traditional one-time fusible links in high-reliability sectors.

Replacement Considerations

Direct substitutes within the same family include MF-RHS800-0 for slightly lower current ratings. For higher current needs, consider MF-RHS1000-0. Always verify that any replacement maintains the same radial leaded package dimensions and high-temperature rating specifications.