WLBD2012K2U221TP

Overview

The WLBD2012K2U221TP is a ferrite chip bead manufactured by Walsin Technology Corporation, designed for surface mount technology (SMD/SMT) applications. It features a 0805 (2012 metric) package with dimensions of 2.0 mm length, 1.25 mm width, and 1.25 mm height. The component provides an impedance of 220 Ohms at a test frequency of 100 MHz and supports a maximum DC current of 500 mA. Its maximum DC resistance is 200 mOhms. The device operates within a temperature range of -55°C to +125°C and includes shielded construction with flexible soft termination ends.

Feature Summary

• Shielded construction minimizes electromagnetic interference radiation
• Flexible soft termination design enhances solder joint reliability under mechanical stress
• High-frequency noise suppression capability optimized for signal integrity

Applications

• EMI filtering in high-frequency digital circuits
• Signal line protection in portable electronic devices
• Power supply noise suppression in compact modules

Procurement Notes

Verify the specific suffix K2U against official Walsin documentation to confirm impedance tolerance and termination material specifications. Ensure the ordering quantity aligns with standard reel or cut tape packaging requirements defined in the manufacturer's datasheet. Confirm RoHS compliance status through the latest environmental declaration provided by Walsin Technology Corporation prior to procurement.

Selection Notes

Select this component when space constraints require a 0805 footprint for EMI suppression. The 500 mA current rating suits moderate power signal lines. Verify that the 220 Ohm impedance at 100 MHz matches the target noise frequency spectrum. Ensure the operating temperature range of -55°C to +125°C meets the environmental conditions of the final assembly.

Part Context

This part belongs to the WLBD series of ferrite beads from Walsin Technology Corporation. The series utilizes multilayer ferrite technology to provide broadband noise absorption. The WLBD2012K2U221TP specifically targets applications requiring compact form factors with reliable performance in consumer electronics and industrial control systems where space is limited.

Replacement Considerations

Consult Walsin's official substitution guide for direct equivalents. Cross-reference impedance curves and current ratings with competitor parts like Murata or TDK if sourcing alternatives. Ensure physical dimensions and terminal compatibility match the existing PCB layout before substituting.