CMJ-2-472

Common Mode Chokes Overview

The CMJ-2-472 is a miniature surface mount common mode choke manufactured by Talema Group LLC. It features two windings with an inductance of 4.7 mH measured at 100 kHz and a maximum DC resistance (DCR) of 840 milliohms. The component supports an operating current of 200 mA and has a leakage inductance of 500 nH. Designed for compact electronic assemblies, it provides EMI suppression for dual-line signal paths.

Common Mode Chokes Feature Summary

• Miniature surface mount construction for space-constrained designs
• Dual-winding configuration for common mode noise reduction
• High inductance value effective at 100 kHz frequencies

Common Mode Chokes Applications

• EMI suppression in data line filtering
• Signal integrity protection in telecommunications equipment
• Noise mitigation in compact network interface circuits

Common Mode Chokes Procurement Notes

Verify the specific package dimensions and terminal configuration against your PCB footprint before ordering. Confirm that the 200 mA current rating meets the operational requirements of your circuit to prevent saturation or excessive heating. Ensure compatibility with your assembly process regarding surface mount technology standards.

Common Mode Chokes Selection Notes

Select this component when high inductance is required in a small form factor for low-current applications. The 840 mOhm DCR indicates moderate insertion loss; verify if this impedance matches your signal source requirements. Consider the 500 nH leakage inductance impact on differential signal integrity if used in high-speed data lines.

Common Mode Chokes Part Context

This part belongs to the CMJ series of miniature SMD common mode chokes from Talema Group LLC. The series offers various inductance values tailored for different frequency ranges. Talema specializes in custom and standard magnetic components, including transformers and inductors, serving global markets since 1975.

Common Mode Chokes Replacement Considerations

Check for direct substitutes within the Talema CMJ series with matching inductance and current ratings. Verify pinout compatibility and physical dimensions before replacing with components from other manufacturers to ensure board fit and electrical performance alignment.