MMZ1005B121CT000

Overview

The TDK MMZ1005B121CT000 is a ferrite chip bead designed for general signal line applications. It features an impedance of 120 ohms at a test frequency of 100 MHz with a tolerance of 25%. The component supports a maximum DC current of 400 mA and has a maximum DC resistance of 250 milliohms. It operates within a temperature range of -55°C to +125°C. The physical dimensions are 1.0 mm in length, 0.5 mm in width, and 0.5 mm in thickness, conforming to the 0402 (1005 metric) package.

Feature Summary

• Designed for suppression of electromagnetic interference on general signal lines
• Compact surface-mount construction suitable for high-density PCB layouts
• Capable of handling continuous DC currents up to 400 mA

Applications

• General signal line noise suppression
• High-speed digital circuit protection
• Data transmission line filtering

Procurement Notes

Verify the specific suffix 'CT000' against official TDK documentation to confirm tape-and-reel packaging specifications. Ensure the selected variant matches the required impedance tolerance and current rating for the target application environment. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and traceability before finalizing procurement orders.

Selection Notes

Select this component when signal integrity requires attenuation at 100 MHz without significant DC voltage drop. The 0402 footprint allows integration into space-constrained designs. Evaluate the 400 mA current limit to ensure it exceeds the peak operating current of the protected circuit. Confirm compatibility with standard reflow soldering profiles for SMD/SMT assembly processes.

Part Context

This component belongs to the TDK MMZ series of ferrite beads, which are widely used for EMI suppression in electronic devices. The MMZ series offers various impedance values and current ratings to suit different circuit requirements. The 1005 metric package size provides a balance between performance and board space efficiency for consumer and industrial electronics.

Replacement Considerations

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