BK0603LL121-T

Overview

The BK0603LL121-T is a multilayer chip ferrite bead manufactured by Taiyo Yuden, designed for surface-mount applications. It features an impedance of 120 Ohms at a test frequency of 100 MHz with a tolerance of 25%. The component supports a maximum DC current of 350 mA and has a maximum DC resistance of 380 mOhms. It operates within a temperature range of -55°C to +125°C. The physical dimensions are 0.6 mm in length, 0.3 mm in width, and 0.33 mm in height, corresponding to the 0201 (0603 metric) package.

Feature Summary

• Multilayer construction for compact high-frequency noise suppression
• Surface-mount design compatible with standard SMD/SMT processes
• Unshielded configuration for general circuit integration

Applications

• General electronic equipment such as AV devices and office automation
• Information and communication equipment including mobile phones
• Automotive electronic systems
• Telecommunications infrastructure
• Industrial control equipment

Procurement Notes

Verify availability status carefully as this part may be discontinued or subject to limited supply constraints. Confirm RoHS compliance details through official documentation before ordering. Check for specific packaging requirements such as cut tape or reel quantities. Ensure the supplier provides valid traceability data. Validate that the received components match the exact BK0603LL121-T designation to avoid substitution errors.

Selection Notes

Select this component when a 120 Ohm impedance at 100 MHz is required for EMI suppression in space-constrained designs. The 0201 package size suits high-density PCB layouts. Ensure the operating current does not exceed 350 mA to maintain performance. Verify thermal stability requirements against the -55°C to +125°C range. Consider the unshielded nature for non-critical shielding environments.

Part Context

This ferrite bead belongs to the BK series of multilayer chip inductors from Taiyo Yuden. It is categorized under Ferrites within the broader passive components family. The part is specifically engineered for noise reduction in digital circuits. It shares the same footprint characteristics as other 0201 sized beads but differs in impedance and current ratings.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Cross-reference with other 0201 ferrite beads only if electrical parameters match exactly. Verify manufacturer discontinuation notices before selecting alternatives.