0ZRE0055FF2A

Ptc Resettable Fuses Overview

The Bel Fuse Inc. 0ZRE0055FF2A is a polymer PTC resettable fuse designed for overcurrent protection in through-hole applications. It features a radial, disc-style package and holds AEC-Q200 automotive qualification. The device maintains a maximum holding current (Ih) of 550 mA and operates at a maximum voltage of 240 V. Key electrical parameters include an initial resistance (Ri) minimum of 450 mOhms and a post-trip resistance (R1) maximum of 1.45 Ohms. It functions within a temperature range of -40°C to +85°C.

Ptc Resettable Fuses Feature Summary

• Provides automatic circuit recovery after fault clearance without manual replacement
• Automotive-grade reliability certified under AEC-Q200 standards
• Offers bidirectional protection capability for AC and DC circuits

Ptc Resettable Fuses Applications

• Automotive electronic module protection
• Consumer electronics power input circuits
• Industrial control system overcurrent safeguarding

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix FF2A corresponds to the required tape and reel or cut tape packaging format. Confirm that the AEC-Q200 certification status remains active for the production lot. Ensure the radial lead configuration matches the target PCB footprint dimensions. Validate that the 240V rating aligns with the system's peak operating voltage requirements.

Ptc Resettable Fuses Selection Notes

Select this component when a low-profile, automotive-qualified PTC fuse is required for moderate current protection. The 550 mA holding current suits sensitive signal lines or low-power auxiliary circuits. The radial disc package facilitates easy insertion into standard through-hole manufacturing processes. Consider the trip current characteristics relative to the load's surge tolerance during normal operation.

Ptc Resettable Fuses Part Context

This part belongs to the 0ZRE series of polymer PTC resettable fuses from Bel Fuse Inc. The series is characterized by its compact radial design and suitability for high-volume automated assembly. It serves as a reusable alternative to traditional one-time fusible links in environments requiring frequent maintenance access or rapid system restoration.

Ptc Resettable Fuses Replacement Considerations

Direct substitutes must match the 550 mA holding current, 240 V rating, and radial disc package. Verify that any alternative component also holds AEC-Q200 certification if automotive compliance is mandatory. Ensure the physical lead spacing and body dimensions are compatible with the existing PCB layout.