WLBD2012HCU221TH

Overview

The WLBD2012HCU221TH is a shielded ferrite chip bead manufactured by Walsin Technology Corporation. It features an impedance of 220 Ohms at a test frequency of 100 MHz with a tolerance of 25%. The component supports a maximum DC current of 1 A and has a maximum DC resistance of 65 mOhms. It operates within a temperature range of -55°C to +125°C. The physical dimensions are 2.0 mm in length, 1.25 mm in width, and 1.25 mm in height, corresponding to the 0805 (2012 metric) package. It utilizes SMD/SMT termination types.

Feature Summary

• Shielded construction minimizes electromagnetic interference coupling
• Flexible soft terminals accommodate PCB mechanical stress
• High current handling capability for power line applications

Applications

• Power line filtering in mid-frequency ranges
• Noise suppression in electronic circuits
• EMI reduction in portable devices

Procurement Notes

Verify the specific suffix TH against the manufacturer's official datasheet to confirm tape and reel packaging specifications. Ensure the ordered part matches the exact impedance value and current rating required for the target circuit design. Cross-reference the RoHS compliance status directly with the latest documentation provided by Walsin Technology Corporation before finalizing procurement decisions.

Selection Notes

Select this component when shielding is required to prevent magnetic field leakage in compact designs. The 220 Ohm impedance at 100 MHz targets specific noise frequencies. Verify that the 1 A current rating exceeds the maximum operating current of the application. Consider the 0805 footprint constraints during PCB layout planning to ensure adequate clearance and thermal management.

Part Context

This ferrite bead belongs to the WLBD series from Walsin Technology Corporation, designed for surface mount assembly. The HC designation typically indicates high-current capabilities within the product family. It serves as a passive component for signal integrity and power supply noise reduction in modern electronics manufacturing.

Replacement Considerations

Consult Walsin's official substitution guide for direct equivalents. Verify that any alternative maintains identical impedance characteristics, current ratings, and physical dimensions to ensure compatibility with existing PCB footprints and performance requirements.

FAQ

What is the test frequency for the specified impedance?

The impedance of 220 Ohms is measured at a test frequency of 100 MHz.

Is the component shielded?

Yes, the WLBD2012HCU221TH features a shielded construction to reduce electromagnetic interference.