MF-RX090/72-2

Overview

The Bourns MF-RX090/72-2 is a radial leaded PPTC resettable fuse from the Multifuse MF-RX/72 series. It features a 72 VDC maximum voltage rating and a 0.9 A hold current. The device trips at 1.8 A with a typical trip time of 7.2 seconds. It has a minimum resistance of 0.14 Ω and a maximum resistance of 470 mΩ. Power dissipation is rated at 1 W, operating between -40°C and +85°C. Dimensions are 3.1 mm width, 11.7 mm length, and 16.7 mm height.

Feature Summary

• Provides overcurrent protection through polymer positive temperature coefficient technology
• Automatically resets to low resistance state after fault condition removal
• Eliminates need for manual replacement in protected circuits

Applications

• LED driver circuit protection
• Current control systems
• Surge and inrush current limiting

Procurement Notes

Verify component authenticity against official Bourns documentation. Confirm package type matches radial leaded specifications. Ensure voltage and current ratings align with target application requirements before integration.

Selection Notes

Select this component for applications requiring 72 VDC isolation and 0.9 A continuous current handling. Consider thermal derating factors when operating near maximum temperature limits. Validate trip characteristics against system fault profiles.

Part Context

Part of the Multifuse MF-RX/72 series designed for high-voltage radial leaded applications. This series offers robust circuit protection in compact through-hole packages suitable for industrial and consumer electronics.

Replacement Considerations

MF-RX090/72-0 serves as an alternative variant within the same series with identical electrical ratings but potentially different packaging or certification details.