CMJ-2-102

Common Mode Chokes Overview

The CMJ-2-102 is a miniature surface-mount common mode choke manufactured by Talema Group LLC. It features dual-line construction with an inductance of 1 mH measured at 100 kHz and a current rating of 500 mA. The component exhibits a DC resistance (DCR) of 250 milliohms per line. Designed for compact electronic assemblies, it utilizes a surface-mount package to facilitate automated placement. This device serves as a noise suppression element in signal and power lines, offering high impedance to common mode interference while maintaining low insertion loss for differential signals.

Common Mode Chokes Feature Summary

• Dual-line surface-mount architecture designed for compact circuit board integration
• High common mode impedance effective for suppressing high-frequency electromagnetic interference
• Low DC resistance characteristic ensuring minimal voltage drop and power loss in the signal path

Common Mode Chokes Applications

• Noise suppression in switching power supply input and output stages
• Signal integrity enhancement in high-speed data transmission lines
• Electromagnetic compatibility filtering in portable consumer electronics

Common Mode Chokes Procurement Notes

Verify the specific package dimensions and terminal configuration against the official Talema Group LLC datasheet prior to PCB layout finalization. Confirm that the 500 mA current rating aligns with the maximum operating current of the target application to prevent saturation. Ensure compliance with RoHS directives if required by the end-product specifications. Cross-reference the manufacturer part number with authorized distributors to guarantee authenticity and traceability.

Common Mode Chokes Selection Notes

Select this component when space constraints necessitate a surface-mount solution for common mode noise reduction. The 1 mH inductance value provides adequate attenuation for typical EMI frequencies encountered in digital circuits. Evaluate the thermal performance under continuous load conditions to ensure the 500 mA rating remains within safe operating limits. Consider the physical footprint compatibility with existing assembly equipment and soldering profiles during the design phase.

Common Mode Chokes Part Context

This component belongs to the CMJ series of miniature SMD common mode chokes produced by Talema Group LLC. The series is engineered for applications requiring efficient noise filtration in limited spatial environments. These devices are commonly utilized in modern electronics where miniaturization is critical without compromising electrical performance or signal fidelity.

Common Mode Chokes Replacement Considerations

Consult the official Talema Group LLC documentation for verified substitute part numbers within the same series or equivalent specifications from other manufacturers. Ensure any replacement maintains identical inductance, current rating, and physical dimensions to preserve circuit functionality and mechanical fit.