MF-R090-AP-9

Ptc Resettable Fuses Overview

The MF-R090-AP-9 is a polymeric positive temperature coefficient (PPTC) resettable fuse manufactured by Bourns. It features a radial through-hole package with a disc form factor, designed for PCB mounting. The device has a hold current of 900 mA and a trip current of 1.8 A at maximum ambient temperature. It supports a maximum voltage of 60 VDC and offers a maximum fault current rating of 40 A. The initial resistance is specified at 310 mOhms, with a power dissipation of 600 mW. The component operates within a temperature range of -40°C to +85°C and measures 11.7 mm in diameter and height, with a width of 3.1 mm.

Ptc Resettable Fuses Feature Summary

• Provides automatic circuit protection against overcurrent conditions through self-resetting functionality
• Utilizes polymeric PTC technology to limit fault currents without permanent damage
• Designed for reliable performance in space-constrained applications via compact radial disc packaging

Ptc Resettable Fuses Applications

• Consumer electronics such as MP3 players and digital cameras
• Portable computing devices including PDAs and mobile phones
• Telecommunications equipment and network communication systems
• Industrial instrumentation and automated control systems

Ptc Resettable Fuses Procurement Notes

Verify the specific ordering suffix AP-9 against the manufacturer's official datasheet to confirm lead time and availability status. Ensure the procurement channel provides valid traceability documentation. Confirm that the received components match the exact part number designation to avoid substitution errors during assembly.

Ptc Resettable Fuses Selection Notes

Select this component when a 900 mA hold current and 60 VDC rating align with the circuit requirements. Consider the 310 mOhm resistance for voltage drop calculations. Evaluate the thermal environment to ensure operation remains within the -40°C to +85°C range. Verify that the radial disc package fits the available PCB footprint and mounting constraints.

Ptc Resettable Fuses Part Context

This part belongs to the MF-R/90 series of PTC resettable fuses from Bourns. The series is engineered for circuit protection in various electronic markets. The MF-R090-AP-9 variant specifically targets applications requiring moderate current handling with a compact physical profile. It serves as a reusable alternative to traditional one-time fuses in consumer and industrial designs.

Ptc Resettable Fuses Replacement Considerations

Consult the official Bourns replacement guide for direct equivalents. Verify that any substitute maintains identical electrical parameters including 900 mA hold current and 60 VDC rating. Ensure the replacement package matches the radial disc form factor for mechanical compatibility.