CMN3-3903VSM

Common Mode Chokes Overview

The CMN3-3903VSM is a vertical mount common mode toroidal choke manufactured by Gowanda Electronics. It features an inductance of 390 µH at 10 kHz, a maximum current rating of 14.3 A, and a DC resistance (DCR) of 2.5 mOhm. The component measures 0.925 inches in length and 0.875 inches in width, utilizing a surface mount configuration with four pads.

Common Mode Chokes Feature Summary

• Vertical mounting orientation for space-efficient PCB integration
• High-current capability suitable for power line filtering
• Low DC resistance to minimize insertion loss

Common Mode Chokes Applications

• Common mode noise suppression in high-power circuits
• EMI filtering for industrial equipment
• Power supply input stages requiring high current handling

Common Mode Chokes Procurement Notes

Verify the specific suffix and package type against official Gowanda documentation before ordering. Confirm that the vertical mounting requirement aligns with your PCB layout constraints. Ensure the 14.3 A current rating meets your system's peak load requirements without saturation. Cross-reference the 2.5 mOhm DCR value with thermal management calculations to prevent overheating during operation.

Common Mode Chokes Selection Notes

Select this component when vertical mounting is required for common mode chokes in high-current applications. The low DCR makes it suitable for efficiency-sensitive designs. Consider the physical dimensions of 0.925 x 0.875 inches for adequate clearance on the PCB. Verify compatibility with automated assembly processes for vertical SMT components.

Common Mode Chokes Part Context

Gowanda Electronics specializes in high-reliability magnetic components for aerospace, defense, and medical applications. The CMN3 series represents their vertical mount common mode choke offerings, designed for robust performance in demanding environments. These components are often used where standard horizontal chokes do not fit spatial constraints or where vertical orientation offers mechanical advantages.

Common Mode Chokes Replacement Considerations

Check Gowanda's official substitution guide for equivalent models within the CMN3 series. Verify that any alternative maintains the same vertical mounting style and current rating. Ensure inductance values match the original design specifications to avoid circuit performance degradation.