WLBD3216K2U121PP

Overview

The WLBD3216K2U121PP is a single-channel ferrite chip bead manufactured by Walsin Technology Corporation. It features a 1206 (3216 metric) surface-mount package with dimensions of 3.2 mm length, 1.6 mm width, and 1.1 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 600 mA and has a maximum DC resistance of 150 mOhms. The device operates within a temperature range of -55°C to +125°C and utilizes flexible SMD/SMT terminations.

Feature Summary

• Provides electromagnetic interference suppression through high-impedance characteristics in the RF spectrum.
• Features shielded construction to minimize external magnetic field interaction.
• Utilizes flexible soft terminations to enhance solder joint reliability during thermal cycling.

Applications

• Data line filtering for portable electronic devices
• Power supply noise suppression in compact circuits
• Signal integrity enhancement in high-speed digital interfaces

Procurement Notes

Verify the specific suffix K2U against the manufacturer's latest datasheet to confirm impedance tolerance and material composition. Ensure the ordering quantity aligns with the standard reel or cut-tape packaging options provided by authorized distributors. Confirm RoHS compliance status directly from the official documentation before finalizing procurement specifications.

Selection Notes

Select this component when a 1206 footprint is required for space-constrained designs needing moderate current handling up to 600 mA. The 120 Ohm impedance at 100 MHz makes it suitable for general-purpose EMI suppression rather than high-frequency RF matching. Compare the 150 mOhms DC resistance against power loss constraints in the target circuit path.

Part Context

This part belongs to Walsin's WLBD series of ferrite chip beads, designed for surface-mount technology applications. The series offers various impedance values and current ratings within standardized metric packages like 3216. These components are engineered to replace traditional wire-wound inductors in modern PCB layouts where low profile and high efficiency are prioritized.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source data. Engineers should consult the manufacturer's cross-reference tools or equivalent product catalogs for compatible alternatives with matching impedance and current ratings.

FAQ

What is the test frequency for the specified impedance?

The impedance of 120 Ohms is measured at a test frequency of 100 MHz.

Does the component support high-current applications?

No, the maximum DC current rating is 600 mA, which is suitable for low-to-moderate current signal lines but not for high-power rails.