RN122-4-02

Overview

The Schaffner RN122-4-02 is a horizontal through-hole common mode choke designed for power line filtering. It features a ferrite core and operates within a temperature range of -40°C to +100°C. The component has a nominal inductance of 3.3 mH with a tolerance of -30% to +50%. It supports a maximum DC current of 4 A and exhibits a maximum DC resistance of 46 mOhms. Measuring 27 mm x 28 mm x 16.5 mm, it is unshielded and tested at 10 kHz.

Feature Summary

• Provides common mode noise suppression for power lines
• Utilizes a ferrite core for high inductance performance
• Designed for horizontal PCB mounting via through-hole termination

Applications

• Power supply input filtering
• Battery charger circuits
• Portable device power regulation

Procurement Notes

Verify the specific suffix against the manufacturer datasheet to confirm electrical parameters such as inductance and current rating. Ensure the package style matches the required horizontal orientation. Confirm RoHS compliance status if required by the end application standards.

Selection Notes

Select this component when a 3.3 mH inductance and 4 A current handling capability are required for common mode noise reduction. Consider the physical dimensions and through-hole mounting requirements during PCB layout. Verify thermal management needs given the 100°C maximum operating temperature limit.

Part Context

This part belongs to the RN series of common mode chokes from Schaffner EMC Inc. The series offers various inductance and current ratings tailored for different power line applications. The RN122-4-02 specifically targets higher current requirements compared to lower-rated variants in the same form factor.

Replacement Considerations

The RN122-4-02-3M3 is a confirmed substitute part number with identical specifications. Verify pin compatibility and mechanical fit before substitution.