SRN4018TA-470M

Fixed Inductors Overview

The Bourns SRN4018TA-470M is a semi-shielded power inductor from the SRN4018TA series, featuring a wirewound construction and ferrite core. It provides an inductance of 47 µH with a tolerance of ±20%. The component supports a maximum DC current of 580 mA and exhibits a maximum DC resistance of 585 mΩ. Designed for surface mount applications, it measures 4 mm in length, 4 mm in width, and 1.8 mm in height. It operates within a temperature range of -40°C to +125°C and meets AEC-Q200 automotive qualification standards.

Fixed Inductors Feature Summary

• Semi-shielded wirewound design utilizing a ferrite core to minimize electromagnetic interference.
• AEC-Q200 qualified for reliable operation in demanding automotive environments.
• Low-profile 1.8 mm height suitable for space-constrained printed circuit board layouts.

Fixed Inductors Applications

• Automotive electronic systems requiring certified passive components
• DC-DC converter circuits for energy storage and filtering
• Power supply input and output filtering stages

Fixed Inductors Procurement Notes

Verify the specific manufacturer part number against official Bourns documentation to confirm electrical parameters and physical dimensions. Note that this component may be classified as Not Recommended for New Designs (NRND); consult the manufacturer for availability and lifecycle status before finalizing procurement plans.

Fixed Inductors Selection Notes

Select this inductor when a high inductance value of 47 µH is required in a compact SMD package. Ensure the application current does not exceed the 580 mA rating and verify compatibility with the 4x4x1.8mm footprint. Confirm that the semi-shielded topology meets the system's EMI requirements.

Fixed Inductors Part Context

This component belongs to the SRN4018TA series of semi-shielded power inductors manufactured by Bourns. The series is characterized by its small surface-mount form factor and suitability for automotive applications, offering a balance between high inductance density and thermal performance.

Fixed Inductors Replacement Considerations

Consult the official Bourns datasheet for direct cross-reference or substitute part numbers. Verify that any replacement matches the 47 µH inductance, 580 mA current rating, and 4x4x1.8mm mechanical dimensions.