CMJ-4-102

Common Mode Chokes Overview

The CMJ-4-102 is a surface-mount common mode choke manufactured by Talema Group LLC. It features four lines with an inductance of 1 mH measured at 100 kHz and a maximum current rating of 500 mA. The component exhibits a DC resistance (DCR) of 310 mOhm. Designed for compact circuit board integration, it provides common mode noise suppression in high-density electronic assemblies.

Common Mode Chokes Feature Summary

• Four-line configuration for multi-conductor noise filtering
• Surface-mount design for automated PCB assembly
• High inductance value effective at 100 kHz frequencies

Common Mode Chokes Applications

• Common mode noise suppression in data lines
• EMI filtering for surface-mount circuits
• Signal integrity protection in multi-wire interfaces

Common Mode Chokes Procurement Notes

Verify the specific package dimensions and pinout compatibility against your PCB footprint before ordering. Confirm that the 500 mA current rating meets your application's peak load requirements. Ensure the 310 mOhm DCR does not cause excessive voltage drop in your circuit design. Check RoHS compliance status if required by your manufacturing standards.

Common Mode Chokes Selection Notes

Select this component when a four-line common mode choke is required for surface-mount applications. The 1 mH inductance at 100 kHz makes it suitable for higher frequency noise attenuation compared to lower inductance alternatives. Consider the physical size constraints of your PCB layout as surface-mount chokes have specific height and width limitations.

Common Mode Chokes Part Context

This part belongs to Talema Group LLC's line of surface-mount common mode chokes. The CMJ series is designed for compact electronics where space is limited. The four-line variant specifically addresses multi-conductor cable shielding and noise reduction needs in modern digital systems.

Common Mode Chokes Replacement Considerations

Direct substitutes must match the 1 mH inductance, 500 mA current rating, and four-line surface-mount form factor. Verify equivalent DCR values to ensure similar thermal performance. Cross-reference package dimensions to guarantee mechanical fit on existing PCB layouts.