MF-R500-2-14

Overview

The MF-R500-2-14 is a polymeric positive temperature coefficient (PPTC) resettable fuse manufactured by Bourns Inc. This component features a radial leaded package design, suitable for through-hole mounting applications. It is rated for a maximum voltage of 30V and maintains a hold current of 5.0A. The device provides circuit protection against overcurrent conditions by increasing resistance when heated, effectively interrupting excessive current flow until the fault is removed and the unit cools down.

Feature Summary

• Polymeric PTC technology enables automatic reset functionality after fault clearance
• Radial leaded construction facilitates standard through-hole PCB integration
• Designed for low-voltage circuit protection with defined thermal response characteristics

Applications

• Consumer electronics power supply input protection
• Portable device battery circuit safeguarding
• Low-voltage industrial control signal lines

Procurement Notes

Verify that the required hold current and trip characteristics align with the specific circuit design parameters before procurement. Confirm that the radial lead spacing matches the target printed circuit board layout to ensure proper mechanical fit. Ensure the maximum voltage rating of the component exceeds the operating voltage of the protected circuit to prevent dielectric breakdown during normal operation or transient events.

Selection Notes

Select this component when a resettable overcurrent protection solution is required for low-voltage circuits up to 30V. The 5.0A hold current rating determines the continuous operational limit before tripping occurs. Consider the physical dimensions and lead configuration for compatibility with existing assembly processes. Evaluate the thermal environment to ensure the device can dissipate heat effectively during normal operation without nuisance tripping.

Part Context

This part belongs to the MF series of PTC resettable fuses from Bourns Inc., which are widely used for secondary protection in electronic circuits. The series offers various current ratings and package options to suit different application requirements. These devices serve as cost-effective alternatives to traditional one-time fuses, providing reusable protection capabilities.

Replacement Considerations

Parametric equivalents include the MF-R500-2 model. Verify that any substitute component matches the 5.0A hold current and 30V maximum voltage specifications. Ensure the replacement maintains the same radial leaded package style for direct interchangeability in existing assemblies.