MH2029-121Y

Overview

The MH2029-121Y is a high-current ferrite chip bead manufactured by Bourns Inc. It features an impedance of 120 Ohms with a tolerance of 25% at a test frequency of 100 MHz. The component supports a maximum DC current of 2 A and has a maximum DC resistance of 100 mOhms. It is housed in an 0805 (2012 metric) surface-mount package with dimensions of 2 mm length, 1.2 mm width, and 0.9 mm height. The operating temperature range spans from -55°C to +125°C.

Feature Summary

• Designed for high-current applications within a compact surface-mount footprint
• Provides electromagnetic interference suppression through ferrite material properties
• Capable of operation across a wide industrial temperature range

Applications

• High-current signal line filtering
• Power supply output noise reduction
• Data bus protection in electronic circuits

Procurement Notes

Verify the specific suffix 'Y' against the manufacturer's latest datasheet to confirm packaging and tape-and-reel specifications. Ensure the procurement documentation explicitly states the 2 A current rating and 120 Ohm impedance at 100 MHz to match design requirements. Confirm RoHS compliance status via the official product specification sheet before finalizing orders.

Selection Notes

Select this component when circuit designs require significant current handling capability alongside EMI suppression in a small form factor. The low DC resistance minimizes voltage drop in power paths. Compare thermal performance and saturation characteristics against alternative ferrite beads if higher current or different impedance profiles are needed for the specific application environment.

Part Context

This part belongs to the MH series of ferrite beads from Bourns Inc., which focuses on providing solutions for noise suppression in various electronic systems. The MH2029-121Y specifically targets applications where space constraints limit the use of larger components while still demanding robust current handling capabilities for effective filtering.

Replacement Considerations

The Taiyo Yuden BK2125LL121-TV is identified as a discontinued substitute option. Note that the BK2125LL121-TV has a lower rated current of 400 mA and higher DC resistance compared to the MH2029-121Y, requiring careful evaluation of thermal and electrical performance differences.