BLM18KG300TZ1D

Chip Ferrite Bead Overview

The BLM18KG300TZ1D is a single-line chip ferrite bead from the Murata EMIFIL BLM18 series, designed for surface mount applications. It provides an impedance of 30 Ohms at a test frequency of 100 MHz with a tolerance of 25%. The component supports a maximum DC current of 5 A and exhibits a maximum DC resistance of 10 mOhms. It operates within a temperature range of -55°C to +125°C. The physical dimensions are 1.6 mm in length, 0.8 mm in width, and 0.75 mm in height. This part is qualified under the AEC-Q200 standard for automotive electronics.

Chip Ferrite Bead Feature Summary

• High-current capability suitable for power line filtering
• Automotive-grade qualification ensuring reliability in harsh environments
• Low DC resistance minimizes voltage drop in power distribution paths

Chip Ferrite Bead Applications

• DC power line EMI suppression in automotive systems
• Noise filtering for high-current digital circuits
• Electromagnetic interference mitigation in vehicle electronic control units

Chip Ferrite Bead Procurement Notes

Verify the specific suffix TZ1D against official Murata documentation to confirm packaging configuration and compliance status. Ensure the procurement source provides valid traceability records for automotive-grade components. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and avoid counterfeit risks during acquisition.

Chip Ferrite Bead Selection Notes

Select this component when designing circuits requiring significant current handling alongside noise suppression. The 5 A rating distinguishes it from lower-current variants in the same footprint. Confirm that the 30 Ohm impedance profile aligns with the target noise spectrum. Evaluate thermal management requirements given the high current load and low resistance characteristics.

Chip Ferrite Bead Part Context

This component belongs to the BLM18KG series, which represents Murata's high-current ferrite bead lineup. These parts utilize specialized materials to maintain performance under heavy DC bias conditions. The series is engineered specifically for automotive and industrial applications where space constraints and electrical robustness are critical design factors.

Chip Ferrite Bead Replacement Considerations

Direct substitutes include other BLM18KG300 variants with compatible suffixes such as BLM18KG300TN1D or BLM18KG300SZ1D, provided they meet the same 5 A current and 30 Ohm impedance specifications.