FBMJ2125HS420-T8

Chip Ferrite Bead Overview

The FBMJ2125HS420-T8 is a single-channel ferrite chip bead from the Taiyo Yuden FB series, designed for power line applications. It features an impedance of 42 Ohms at 100 MHz with a maximum DC resistance of 8 mOhms and a rated current of 4 A. The component utilizes a shielded construction within a 0805 (2012 metric) package, measuring 2 mm in length, 1.25 mm in width, and 1.05 mm in height. It operates reliably across a temperature range of -40°C to +125°C.

Chip Ferrite Bead Feature Summary

• Engineered for high reliability and resistance to high energy surges on power lines
• Shielded design minimizes electromagnetic interference coupling
• Optimized for low DC resistance to reduce power loss in high-current circuits

Chip Ferrite Bead Applications

• Power supply filtering in electronic devices
• Noise suppression on high-current data lines
• EMI reduction in portable electronics

Chip Ferrite Bead Procurement Notes

Verify the specific suffix T8 against official Taiyo Yuden documentation to confirm packaging details such as reel quantity or tape specifications. Ensure the impedance tolerance and DC current ratings align with the target circuit requirements before finalizing procurement orders.

Chip Ferrite Bead Selection Notes

Select this component when a 0805 footprint is required for power line noise suppression with a 4 A current rating. The 42 Ohm impedance at 100 MHz targets specific frequency ranges. Compare against the non-shielded HS variants if shielding is not necessary for the application environment.

Chip Ferrite Bead Part Context

This part belongs to the FB series M type (FBMJ), which focuses on chip bead inductors for power lines. The HS designation indicates a high-surge capability variant. It shares the 0805 form factor with other FB series components but offers distinct impedance and current characteristics tailored for robust power integrity management.

Chip Ferrite Bead Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify compatibility with alternative ferrite beads based on impedance curves and physical dimensions.