MF-R900-AP-14

Overview

The Bourns MF-R900-AP-14 is a radial leaded PTC resettable fuse rated for 30V maximum voltage. It features a 9A hold current and an 18A trip current, providing reliable overcurrent protection. The component has an initial resistance of 5 mOhms and supports a maximum fault current of 40A. It operates within a temperature range of -40°C to +85°C and utilizes a 5.1mm lead spacing for PCB mounting.

Feature Summary

• Provides automatic circuit recovery after fault clearance without manual replacement
• Offers high fault current capability for robust system protection
• Features low initial resistance to minimize power loss during normal operation

Applications

• Consumer electronics power supply input protection
• Battery pack overcurrent safeguarding
• Peripheral device port protection

Procurement Notes

Verify the specific suffix AP-14 against official Bourns documentation to confirm lead form and packaging details. Ensure the selected variant matches the required radial lead configuration and thermal rating for the target application environment before finalizing procurement orders.

Selection Notes

Select this component when a 9A continuous current rating and 30V operating voltage are required. The 18A trip threshold provides a defined margin above the hold current. Verify that the 40A maximum fault current exceeds the potential short-circuit levels in the design.

Part Context

This part belongs to the MF-R series of PPTC resettable fuses from Bourns. These devices utilize polymer positive temperature coefficient technology to provide reusable overcurrent protection. The series is designed for applications requiring compact, self-resetting safety components.

Replacement Considerations

Cross-reference with MF-R900-AP or MF-R900-2-14 for similar electrical ratings. Confirm that physical dimensions and lead spacing match the existing PCB footprint before substituting.