ACB2012M-080-T

Overview

The TDK ACB2012M-080-T is a surface-mount ferrite bead designed for electromagnetic interference (EMI) suppression in signal lines. It features an 0805 (2012M) package with dimensions of 2.0 x 1.25 x 0.5 mm. The component provides an impedance of 80 Ohms at 100 MHz and supports a maximum current rating of 400 mA. Its DC resistance is limited to a maximum of 400 mOhm, ensuring minimal signal loss while effectively attenuating high-frequency noise.

Feature Summary

• Provides effective EMI suppression in signal lines through simple series implementation
• Designed for compact surface-mount applications with standardized 0805 footprint
• Maintains low DC resistance to preserve signal integrity during operation

Applications

• Signal line filtering in portable electronic devices
• Noise suppression in battery charger circuits
• EMI control in energy-efficient system designs

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging if required by assembly equipment. Confirm that the 400mA current rating aligns with the peak operational loads of the target circuit. Ensure the 80 Ohm impedance at 100 MHz matches the frequency spectrum of the noise being suppressed. Check for RoHS compliance documentation if environmental regulations apply to the final product assembly.

Selection Notes

Select this component when space constraints require an 0805 footprint for EMI filtering. Choose based on the need for 80 Ohm attenuation at 100 MHz rather than broader bandwidth requirements. Consider the 400mA current limit to prevent saturation or excessive heating in power-sensitive signal paths. Evaluate the low DCR requirement to ensure minimal voltage drop across the component in sensitive analog or digital lines.

Part Context

This ferrite bead belongs to TDK's ACB series, which focuses on EMC suppression components for consumer and industrial electronics. The 2012M case size offers a balance between physical footprint and thermal/current handling capabilities compared to smaller 0603 packages. It serves as a passive filter element complementary to capacitors in LC filter networks.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.