Andrew
Andrew Content Marketer
On Jan 22, 2026

MF-R050 Resettable Fuses – Reliable Overcurrent Safety


The Resettable Fuses - PPTC MF-R050 by Bourns are advanced polymer-based protection devices designed to safeguard electronic circuits against overcurrent and short-circuit conditions. These fuses automatically reset after the fault is removed, reducing downtime and eliminating the need for fuse replacement.

Engineers implementing dependable bold: Circuit Protection, Thermistors, Resettable Fuses - PPTC solutions rely on MF-R050 for consistent electrical safety and long operational life.

Available from www.xonelec.com — also trusted globally as X-On Electronics and XON Electronics — these components support robust protection across consumer, industrial, and communication electronics.


Technical Specifications of MF-R050


Manufacturer: Bourns
Part Number: MF-R050
Product Type: PPTC Resettable Fuse
Hold Current: 0.50A (typical)
Trip Current: Optimized fast trip behavior
Maximum Voltage: Industry standard rating
Initial Resistance: Low resistance for minimal power loss
Response Time: Rapid thermal reaction
Mounting Type: Radial Through Hole

Engineered for professional bold: Circuit Protection, Thermistors, Resettable Fuses - PPTC, this device delivers dependable protection and automatic reset functionality.


Key Features of MF-R050 Resettable Fuses


  • Automatic reset after fault removal

  • Low resistance during normal operation

  • Fast response to overcurrent events

  • Long cycle life and durability

  • Compact PCB footprint

These advantages make it ideal for applications requiring dependable bold: Circuit Protection, Thermistors, Resettable Fuses - PPTC performance.


Applications of MF-R050


The MF-R050 is widely used in:

  • Consumer electronic devices

  • Battery protection circuits

  • USB and interface ports

  • Industrial control systems

  • Telecommunications equipment

  • Power distribution modules

It integrates seamlessly into systems that demand reliable bold: Circuit Protection, Thermistors, Resettable Fuses - PPTC for safe operation.


Wiring and Installation Overview


Through-Hole Mounting Guidelines

  • Install in series with the protected load.

  • Maintain proper lead spacing for heat dissipation.

  • Avoid excessive soldering temperatures.

  • Ensure correct current rating selection.

Proper installation ensures optimal performance and device longevity.


Use Case Scenario


Portable Device Power Protection

Scenario: A portable electronics manufacturer required resettable protection for battery circuits.
Challenge: Minimizing downtime and service costs.
Solution: MF-R050 delivered automatic reset after fault conditions.
Result: Increased product reliability and reduced maintenance expenses.


Download Datasheet


For complete electrical specifications, thermal characteristics, safety approvals, and mechanical drawings, download the official datasheet from the manufacturer or authorized distributors.

MF-R050 Datasheet


Why Buy from XON Electronics?


  • Genuine Bourns components

  • Global inventory availability

  • Fast international shipping

  • Competitive bulk pricing

  • Professional technical support

Order confidently from www.xonelec.com — known worldwide as X-On Electronics and XON Electronics.


Conclusion


The MF-R050 Resettable Fuses - PPTC by Bourns provide smart overcurrent protection, automatic reset capability, and long service life. They are ideal for modern electronic designs requiring maintenance-free safety solutions.


FAQs – MF-R050 Resettable Fuses


Q1. What happens when MF-R050 trips?
It increases resistance to limit current and protect the circuit.

Q2. Does MF-R050 automatically reset?
Yes, once the fault is cleared and temperature returns to normal.

Q3. Can MF-R050 be reused?
Yes, it supports thousands of reset cycles.

Q4. What mounting type does MF-R050 use?
It uses radial through-hole mounting.

Q5. Where can I purchase MF-R050?
It is available from authorized electronic distributors.




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