MCI-2012-371

Common Mode Chokes Overview

The MCI-2012-371 is a surface-mount common mode choke from Pulse Electronics, designed for high-frequency noise suppression. It operates at a test frequency of 100 MHz with an impedance of 370 Ohms and a tolerance of 20%. The component supports a maximum DC current of 280 mA and features a maximum DC resistance of 450 mOhms. Rated for 50 VDC, it functions within a temperature range of -40°C to +85°C. Measuring 2.0 mm by 1.2 mm, this unshielded device utilizes SMD/SMT termination for reliable PCB integration.

Common Mode Chokes Feature Summary

• Provides effective common mode noise filtering for high-speed data lines
• Compact 0805 footprint suitable for space-constrained designs
• Unshielded construction minimizes magnetic interference with nearby components

Common Mode Chokes Applications

• USB interface line protection
• High-speed digital signal filtering
• PC peripheral circuit noise suppression

Common Mode Chokes Procurement Notes

Verify the specific impedance value of 370 Ohms at 100 MHz against your design requirements. Confirm that the 280 mA current rating meets the operational load. Ensure the 450 mOhms DC resistance aligns with power loss constraints. Check compatibility with standard SMD reflow soldering profiles for the 0805 package size.

Common Mode Chokes Selection Notes

Select this component when targeting noise reduction on differential pairs or single-ended lines requiring moderate current handling. The 370 Ohm impedance offers a balance between attenuation and signal integrity for common protocols. Consider the unshielded nature if magnetic coupling with adjacent inductors is a concern in the layout.

Common Mode Chokes Part Context

This part belongs to Pulse Electronics' series of passive filters and chokes. It serves as a critical EMI mitigation element in modern electronics. The MCI-2012-371 complements other components in signal conditioning circuits, ensuring compliance with electromagnetic interference standards for consumer and industrial devices.

Common Mode Chokes Replacement Considerations

The part number BWCU00201212371M02 is documented as an alias for this component. Verify electrical equivalence before substitution. No other cross-references are confirmed in public documentation.