CMF23H-393121

Common Mode Chokes Overview

The Triad Magnetics CMF23H-393121 is a dual-function common mode choke from the CMF series, designed for power line filtering. It features a 39 mH inductance with a tolerance of +30%/-50% at 1 kHz and supports a maximum DC current of 1.2 A. The component has a maximum DC resistance of 766 mOhms and operates within a temperature range of -40°C to +105°C. It utilizes a vertical through-hole mounting style with four radial pins and measures 26.5 mm in length.

Common Mode Chokes Feature Summary

• Dual-function design combining common mode and differential mode filtering capabilities
• Vertical through-hole construction for secure board integration
• Robust thermal performance suitable for high-temperature environments

Common Mode Chokes Applications

• Power supply input filtering
• EMI suppression in electronic equipment
• AC line noise reduction

Common Mode Chokes Procurement Notes

Verify the specific suffix (e.g., -B) to confirm packaging type, as bulk packaging may be indicated by such codes. Ensure the selected variant matches the required mounting orientation and pin configuration for your PCB layout. Cross-reference the datasheet for exact dimensional tolerances and electrical ratings before finalizing procurement.

Common Mode Chokes Selection Notes

Select this component when a combined common and differential mode choke is required for space-constrained designs. The vertical form factor aids in low-profile applications. Verify that the 1.2 A current rating meets the circuit's load requirements and that the 39 mH inductance provides sufficient attenuation for the target noise frequencies.

Common Mode Chokes Part Context

This part belongs to the Triad Magnetics CMF series of dual-function chokes. These components are engineered to replace separate common mode and differential mode inductors, simplifying the bill of materials and reducing assembly complexity. The series offers various inductance values to suit different filtering needs.

Common Mode Chokes Replacement Considerations

Direct substitutes include other Triad Magnetics CMF series parts with similar electrical characteristics. Verify compatibility with alternative manufacturers' common mode chokes by comparing inductance, current rating, and physical dimensions.