PM3700-40

Common Mode Chokes Overview

The PM3700-40-RC is a surface-mount common mode choke from the Bourns PM3700 series. It features an inductance of 1 mH at 1 kHz and supports a current rating of 4 A. The component has a maximum DC resistance of 20 mΩ. It utilizes a two-line configuration with a body diameter of 17.8 mm and a length of 21.6 mm. The device is RoHS compliant and supplied in tape and reel packaging.

Common Mode Chokes Feature Summary

• Surface-mount construction for automated assembly
• Unshielded design suitable for data line filtering
• Compact cylindrical form factor

Common Mode Chokes Applications

• Data line filtering
• Common mode noise suppression
• Signal integrity protection

Common Mode Chokes Procurement Notes

Verify the specific suffix (e.g., -RC) to confirm RoHS compliance and packaging type. Ensure the 4 A current rating meets circuit requirements. Confirm the 1 mH inductance value matches the target frequency response. Check that the 20 mΩ DC resistance aligns with power loss constraints. Validate the surface-mount footprint dimensions against the PCB layout.

Common Mode Chokes Selection Notes

Select this component when a compact, unshielded common mode choke is required for data lines. The 4 A rating suits moderate current applications. The 1 mH inductance provides effective noise attenuation at standard frequencies. Consider the 20 mΩ resistance for efficiency calculations. The surface-mount package facilitates high-volume manufacturing integration.

Common Mode Chokes Part Context

This part belongs to the Bourns PM3700 series of SMD common mode chokes. The series offers various inductance values and current ratings within a consistent physical envelope. The PM3700-40 variant specifically targets applications requiring 1 mH inductance and 4 A handling capability. It represents a standard solution for EMI suppression in space-constrained designs.

Common Mode Chokes Replacement Considerations

Cross-reference other PM3700 series variants for different inductance or current needs. Verify pin compatibility and mechanical dimensions before substituting. Ensure electrical parameters match the original design specifications.