SRF2012A-300YA

Overview

The Bourns SRF2012A-300YA is a two-line surface mount common mode choke featuring a ferrite core and unshielded construction. It exhibits an impedance of 30 Ohms at 100 MHz and supports a maximum DC current of 400 mA with a saturation current of 300 mA. The component has a maximum DC resistance of 500 mΩ ±25% and operates within a temperature range of -55°C to 125°C. Its physical dimensions are 2.00mm x 1.20mm x 1.20mm, and it carries AEC-Q200 qualification.

Feature Summary

• Two-line surface mount configuration for differential signal filtering
• Ferrite core material providing high impedance characteristics
• AEC-Q200 qualified for automotive reliability standards

Applications

• High-speed data line protection in automotive electronics
• Common mode noise suppression in USB interfaces
• EMI filtering for compact mobile device circuits

Procurement Notes

Verify the specific suffix YA against the manufacturer's latest datasheet to confirm exact tolerance and packaging specifications. Ensure the selected variant meets the required AEC-Q200 qualification if used in automotive applications. Cross-reference the impedance value at 100 MHz with circuit simulation requirements to validate performance under intended operating conditions.

Selection Notes

Select this component when space-constrained designs require a 2012 footprint common mode choke. The 30 Ohm impedance at 100 MHz suits high-frequency noise attenuation. Verify that the 400 mA current rating exceeds the peak operational current of the target application to prevent saturation-induced performance degradation.

Part Context

This part belongs to the SRF2012A series of unshielded common mode chokes from Bourns. The series utilizes multilayer ceramic technology with ferrite cores to achieve compact form factors suitable for dense PCB layouts. These components are designed to suppress electromagnetic interference in high-speed digital communication lines.

Replacement Considerations

Direct substitutes include other 2012 footprint common mode chokes with similar 30 Ohm impedance at 100 MHz and comparable current ratings. Verify pin compatibility and thermal characteristics before substitution.