RN242-1.4-02-27M

Overview

The RN242-1.4-02-27M is a two-line common mode choke from the Schaffner RN Series, designed for electromagnetic interference suppression in electronic circuits. It features a vertical through-hole mounting configuration suitable for printed circuit board integration. The component provides an inductance of 27 mH at a test frequency of 10 kHz and supports a continuous current rating of 1.4 A. Its typical direct current resistance is 500 mOhm, ensuring low insertion loss while maintaining effective noise attenuation.

Feature Summary

• Vertical through-hole construction for secure PCB mounting
• Two-line design for differential signal or power line filtering
• High inductance value for effective common mode noise suppression

Applications

• Power supply input stages
• Battery charger circuits
• Portable electronic devices
• Energy-efficient system interfaces

Procurement Notes

Verify the complete part number including suffixes to ensure correct inductance and current ratings. Confirm package orientation and pin compatibility with the target PCB layout. Check manufacturer documentation for specific thermal derating curves if operating near maximum current limits. Ensure compliance with relevant EMC standards required by the final equipment application.

Selection Notes

Select this component when high inductance is required for low-frequency noise suppression in compact designs. The vertical form factor aids in space-constrained layouts where height is less critical than footprint area. Evaluate the 1.4 A current rating against peak load requirements to prevent saturation. Consider the 500 mOhm DCR impact on overall circuit efficiency during normal operation.

Part Context

This component belongs to the Schaffner RN Series of common mode chokes, which are engineered for general-purpose EMI/RFI filtering applications. The series offers various inductance and current combinations to suit different power levels. TE Connectivity acquired Schaffner, integrating these components into their broader electromagnetic interference solutions portfolio for industrial and consumer electronics markets.

Replacement Considerations

Consult official substitution guides for equivalent inductance and current ratings. Verify mechanical dimensions and terminal configurations before replacing to ensure physical compatibility. Cross-reference datasheets for identical electrical performance characteristics under similar operating conditions.