SRR4818A-4R7Y

Fixed Inductors Overview

The Bourns SRR4818A-4R7Y is a shielded surface-mount power inductor with a nominal inductance of 4.7 µH and a tolerance of ±30%. It features a ferrite core and wirewound construction, designed for automotive applications under AEC-Q200 qualification. The component measures 4.8 mm by 4.8 mm with a height of 1.8 mm. Key electrical parameters include a maximum DC current of 2.6 A, a saturation current of 1.5 A, and a maximum DC resistance of 80 mΩ. It operates within a temperature range of -40°C to +125°C.

Fixed Inductors Feature Summary

• Shielded magnetic design minimizes electromagnetic interference.
• Automotive-grade AEC-Q200 qualification ensures reliability.
• Compact surface-mount footprint suitable for space-constrained layouts.

Fixed Inductors Applications

• Automotive power supply circuits
• DC-DC converter modules
• Power factor correction systems

Fixed Inductors Procurement Notes

Verify the specific datasheet version to confirm exact saturation and RMS current ratings, as values may vary between sources. Ensure the ordering suffix matches the required reel quantity. Cross-reference the manufacturer part number against official distributor catalogs to avoid counterfeit components. Confirm RoHS compliance status prior to final procurement decisions.

Fixed Inductors Selection Notes

Select this component when a compact, shielded inductor is required for automotive-grade designs. Compare saturation current requirements against the 1.5 A limit to prevent performance degradation. Evaluate thermal management needs given the 125°C maximum operating temperature. Consider the 80 mΩ DCR impact on overall circuit efficiency during high-current operation phases.

Fixed Inductors Part Context

This part belongs to the SRR4818A series of shielded power inductors from Bourns. The series offers various inductance values optimized for high-frequency switching applications. The 4818 package size provides a balance between current handling capability and board space efficiency compared to smaller or larger alternatives in the product line.

Fixed Inductors Replacement Considerations

Direct substitutes must match the 4.7 µH value, 4818 footprint, and AEC-Q200 certification. Verify that alternative components meet or exceed the 2.6 A RMS current rating and 1.5 A saturation threshold. Check compatibility with existing PCB soldering profiles and reflow temperatures.