EMI1812R-125

Chip Ferrite Bead Overview

The EMI1812R-125 is a shielded surface-mount ferrite bead from the API Delevan EMI1812R series, designed for high-frequency EMI/RFI suppression. It features an 1812 (4532 Metric) package with single-line configuration. Key electrical parameters include an impedance of 120 Ohms at 100 MHz and a maximum DC resistance of 400 mOhm. The component supports a rated current of 200 mA and operates within a temperature range of -55°C to +125°C.

Chip Ferrite Bead Feature Summary

• Provides effective electromagnetic interference and radio frequency interference suppression in compact surface-mount form factors.

Chip Ferrite Bead Applications

• High-frequency signal line filtering
• Power supply noise attenuation
• EMI suppression in portable electronic devices

Chip Ferrite Bead Procurement Notes

Verify the manufacturer designation as API Delevan or Delevan when sourcing. Confirm the specific impedance value of 120 Ohms at 100 MHz matches design requirements. Ensure the 1812 package footprint aligns with PCB layout constraints. Check for RoHS compliance status if required by project specifications.

Chip Ferrite Bead Selection Notes

Select this component for applications requiring moderate current handling up to 200 mA with significant high-frequency attenuation. The low DC resistance minimizes voltage drop in power lines. Consider the operating temperature range of -55°C to +125°C for environmental suitability. Evaluate the 120 Ohm impedance against target noise frequencies for optimal filtering performance.

Chip Ferrite Bead Part Context

This part belongs to the EMI1812R series of shielded surface-mount ferrite beads. The series is characterized by its ability to deliver effective suppression in a small footprint. API Delevan manufactures these components to meet stringent reliability standards for various electronic filtering requirements.

Chip Ferrite Bead Replacement Considerations

Consult official API Delevan documentation for verified substitute part numbers. Cross-reference impedance curves and current ratings when evaluating alternatives. Ensure physical dimensions match the 1812 package standard for direct replacement compatibility.