EMI1206R-31

Chip Ferrite Bead Overview

The Delevan EMI1206R-31 is a surface-mount ferrite chip bead designed for EMI and RFI suppression. It operates within a temperature range of -55°C to +125°C and utilizes a 1206 (3216 metric) package with dimensions of 3.2 mm length, 1.6 mm width, and a maximum height of 1.30 mm. The component exhibits an impedance of 31 Ohms at a test frequency of 100 MHz. It supports a maximum DC current of 500 mA and maintains a maximum DC resistance of 0.15 Ohms.

Chip Ferrite Bead Feature Summary

• Provides effective attenuation of electromagnetic interference and radio frequency noise in high-speed signal lines.
• Features a compact surface-mount footprint suitable for automated assembly processes.
• Maintains stable electrical characteristics across a wide industrial temperature range.

Chip Ferrite Bead Applications

• High-speed data interface filtering
• Power supply line noise suppression
• Clock signal integrity enhancement

Chip Ferrite Bead Procurement Notes

Verify the manufacturer designation carefully, as API Delevan and Delevan are associated with this part number lineage. Confirm the specific impedance value of 31 Ohms matches the design requirement, distinguishing it from other variants in the EMI1206R series such as the 300 Ohm or 1200 Ohm versions. Ensure the supplier provides valid RoHS compliance documentation consistent with the component's regulatory requirements.

Chip Ferrite Bead Selection Notes

Select this component when a specific 31 Ohm impedance is required at 100 MHz for noise reduction. Evaluate the 500 mA current rating against the circuit's operational load to prevent saturation. Consider the 1206 package size constraints relative to available PCB real estate and thermal management needs during layout.

Chip Ferrite Bead Part Context

This component belongs to the EMI1206R series of ferrite beads manufactured by API Delevan Inc. The series offers various impedance values tailored for different suppression needs while maintaining a standardized 1206 surface-mount form factor. These components are engineered for reliable performance in consumer electronics and industrial applications requiring compact noise filtering solutions.

Chip Ferrite Bead Replacement Considerations

Direct substitutes include other 31 Ohm ferrite beads in the 1206 package, such as those from Murata or TDK, provided they meet the 500 mA current and 0.15 Ohms DC resistance specifications. Verify impedance tolerance and temperature coefficients before substitution.

Chip Ferrite Bead FAQ

What is the test frequency for the 31 Ohm impedance rating?

The impedance of 31 Ohms is specified at a test frequency of 100 MHz.

What is the maximum operating temperature for this ferrite bead?

The component is rated for operation up to a maximum temperature of +125°C.