Chip ferrite beads remove wideband noise in vehicles

The BLM21HE series of chip ferrite beads from Murata provide powerline noise suppression, including high-frequency issues within high-current automotive systems. Even at 1 GHz, BLM21HE802XXX devices typically attain impedance values of 850 Ω.

This makes the parts useful for addressing the signal integrity of next-generation vehicle designs where high-current powerlines will be in close proximity to high-frequency communication-related functions. The chip ferrite beads can be used in wireless battery management system (wBMS) infrastructure and vehicle-to-vehicle communication systems.

With a wide band of 100 MHz to 1 GHz and high impedance, the BLM21HE series suppresses high-frequency noise, as well as conventional noise frequencies. Further, the low DC resistance values of these chip ferrite beads results in minimal power loss, improving efficiency and reducing the amount of thermal management needed to dissipate any generated heat.

Advancements in LED Drivers for Next-Generation Automotive Exterior Lighting09.18.2023

Reducing the Production Cost of Integrated Circuits in the Integration Era09.14.2023

Democratizing Edge AI and ML with a No Code Approach09.12.2023

BLM21HE chip ferrite beads come in versions that operate over temperature ranges of -55°C to +125°C and -55°C to +150°C. They are housed in surface-mount 0805 cases (2.0×1.25×1.25 mm) and can be purchased through Murata’s distributor network.

BLM21HE series product page

Murata Manufacturing

Find more datasheets on products like this one at Datasheets.com, searchable by category, part #, description, manufacturer, and more.