WLBD1005HCU121TL

Overview

The WLBD1005HCU121TL is a single-channel ferrite chip bead manufactured by Walsin Technology Corporation. It features a 0402 (1005 metric) surface-mount package with dimensions of 1 mm length, 0.5 mm width, and 0.5 mm height. The component provides an impedance of 120 Ohms at a test frequency of 100 MHz with a tolerance of +/-25%. It supports a maximum DC current of 2 A and has a maximum DC resistance of 55 mOhms. The device operates within a temperature range of -55°C to +125°C.

Feature Summary

• Provides electromagnetic interference suppression through high-impedance characteristics at specific frequencies.
• Utilizes a shielded design to contain magnetic fields and reduce external noise coupling.
• Features flexible soft terminals to enhance solder joint reliability during thermal cycling.

Applications

• Power line filtering in compact electronic devices
• EMI suppression for high-speed digital circuits
• Signal integrity management in mobile communication hardware

Procurement Notes

Verify the exact part number against manufacturer documentation to ensure correct impedance and current ratings. Confirm RoHS compliance status and packaging options such as cut tape or reel availability directly with authorized distributors. Check for any specific handling requirements related to the flexible terminal construction.

Selection Notes

Select this component when space constraints require a 0402 footprint and the application demands a 120 Ohm impedance at 100 MHz. Ensure the circuit's operating current does not exceed the 2 A rating to prevent saturation. Consider the 55 mOhm DC resistance impact on power loss in low-voltage supply lines.

Part Context

This ferrite bead belongs to Walsin's WLBD series, designed for surface-mount technology applications. The series offers various impedance values and current ratings across different package sizes, including 0402, 0603, and 1206 metrics, catering to diverse EMI suppression needs in consumer electronics and industrial equipment.

Replacement Considerations

Cross-reference with other 0402 ferrite beads offering 120 Ohms @ 100 MHz and >=2 A current rating. Verify pin compatibility and impedance curves match the original design requirements before substitution.