RN142-4-02

Overview

The Schaffner RN142-4-02 is a current-compensated common mode choke from the RN series, designed for power line applications. It features a maximum current rating of 4 A and an inductance of 3.3 mH per path. The component has a typical DC resistance of 67 mΩ and supports a voltage rating of 300 VDC. It utilizes a PCB terminal mounting style with horizontal orientation. The device operates within a temperature range of -40°C to +100°C and meets UL 94V-0 flammability standards.

Feature Summary

• Current-compensated design for efficient noise suppression
• Horizontal board mount configuration
• High thermal stability up to 100°C

Applications

• Power supplies
• Battery chargers
• Portable devices

Procurement Notes

Verify the specific suffix against the manufacturer datasheet to confirm exact electrical parameters and pinout compatibility. Ensure the selected variant matches the required inductance and current ratings for the target circuit. Confirm compliance with relevant safety certifications such as UL before integration into final products.

Selection Notes

Select this component when a 4 A current rating and 3.3 mH inductance are required for common mode noise reduction. Consider the horizontal mounting profile and through-hole termination style for PCB layout constraints. Evaluate the 67 mΩ DC resistance impact on system efficiency during initial design phases.

Part Context

This part belongs to the Schaffner RN series of EMC chokes, which are engineered for electromagnetic interference suppression in electronic equipment. The series offers various inductance and current combinations to suit different power line filtering requirements across industrial and consumer electronics sectors.

Replacement Considerations

RN142-4-02-3M3 is a confirmed substitute part number with identical specifications.