MF-RX185-0-14

Overview

The Bourns MF-RX185-0-14 is a radial leaded polymeric positive temperature coefficient (PPTC) resettable fuse from the MF-RX/72 series. It features a hold current of 1.85 A and a trip current of 3.7 A, rated for a maximum voltage of 72 VDC. The device has a maximum resistance of 120 mΩ and a short-circuit rating of 40 A. It operates within a temperature range of -40°C to +85°C and utilizes a 5.1 mm lead spacing.

Feature Summary

• Provides automatic circuit protection by increasing resistance in response to overcurrent or overheating conditions.
• Offers reusable functionality by returning to a low-resistance state after the fault condition is removed and the device cools down.

Applications

• Overcurrent protection in consumer electronic devices
• Circuit safeguarding in industrial control systems
• Protection for telecommunications equipment ports

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to ensure correct package and lead configuration. Confirm that the hold current and voltage ratings align with the target circuit requirements before finalizing procurement orders.

Selection Notes

Select this component based on its 1.85 A hold current and 72 VDC rating. Ensure the application environment stays within the specified -40°C to +85°C operating temperature range. Verify that the 120 mΩ maximum resistance meets the circuit's power loss constraints.

Part Context

This part belongs to the Bourns Multifuse MF-RX series, designed for through-hole mounting. The series provides reliable thermal protection using polymer technology, suitable for applications requiring resettable fuses with radial leads and standard PCB mounting configurations.

Replacement Considerations

Consult the official Bourns replacement guide for verified substitutes. Cross-reference parameters such as hold current, voltage rating, and physical dimensions when evaluating alternative components.