BK1005HM121-T

Overview

The BK1005HM121-T is a multilayer chip bead inductor from the Taiyo Yuden BK series, designed for surface-mount applications. It features an impedance of 120 Ohms at 100 MHz with a tolerance of 25%. The component supports a maximum DC current of 0.3 A and has a maximum DC resistance of 400 mOhms. It operates within a temperature range of -55°C to +125°C. The physical dimensions are 1.00mm x 0.50mm (0402 metric) with a maximum height of 0.55mm.

Feature Summary

• Multilayer construction for compact high-frequency noise suppression
• High-temperature stability up to 125°C
• Low DC resistance for minimal power loss

Applications

• EMC noise filtering in portable electronic devices
• Signal line protection in mobile communication equipment
• Power supply filtering in compact circuit boards

Procurement Notes

Verify end-of-life status as this part may be discontinued. Confirm RoHS compliance and moisture sensitivity level before integration. Check for valid replacement components if production continuity is required. Ensure supplier documentation matches the specific suffix and manufacturing date code.

Selection Notes

Select this component for applications requiring low current handling (0.3A) in small footprints. Compare against BK1005HS and BKP series variants for higher current or different impedance requirements. Ensure the 0402 package fits the PCB layout constraints. Verify thermal performance under continuous load conditions.

Part Context

Part of the BK series multilayer ferrite beads. Designed for high-frequency noise suppression in space-constrained electronics. Manufactured by Taiyo Yuden using proprietary multilayer technology for consistent electrical characteristics across batches.

Replacement Considerations

Check for direct substitutes within the BK series such as BK1005HW121-T or BK1005HS121-T, noting differences in current ratings and DC resistance. Verify pin compatibility and impedance curves before substitution.