WLBD1005K2U400TP

Overview

The WLBD1005K2U400TP 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 40 Ohms at a test frequency of 100 MHz with a tolerance of +/-25%. It supports a maximum DC current of 300 mA and has a maximum DC resistance of 300 mOhms. The device operates within a temperature range of -55°C to +125°C and utilizes flexible soft terminals for SMD/SMT mounting.

Feature Summary

• Provides electromagnetic interference suppression through high-frequency impedance characteristics
• Utilizes shielded construction to contain magnetic fields
• Features flexible soft terminals designed to reduce mechanical stress on the substrate during thermal cycling

Applications

• EMI suppression in high-frequency digital circuits
• Signal integrity protection in compact consumer electronics
• Power line filtering in portable devices requiring small form factors

Procurement Notes

Verify the specific suffix 'TP' against the manufacturer's official documentation to confirm packaging configuration, as suffixes may indicate variations in reel or cut tape specifications. Ensure the ordering part number matches the required impedance tolerance and current rating for the target application circuit design.

Selection Notes

Select this component when space constraints require a 0402 footprint while maintaining adequate current handling for low-power signal lines. The 40 Ohm impedance at 100 MHz targets specific noise frequencies. Confirm that the 300 mA current rating exceeds the maximum steady-state DC current in the application to prevent saturation or excessive heating.

Part Context

This component belongs to the WLBD series of ferrite beads from Walsin Technology Corporation. The series offers various impedance values and current ratings within standard industry footprints. The WLBD1005K2U400TP specifically addresses applications needing moderate impedance in a minimal board area, distinguishing it from higher-current variants like the HC series or different impedance models within the same package size.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Cross-referencing requires consulting official manufacturer substitution guides or equivalent electrical parameter matching from other vendors.