RN102-0.3-02

Overview

The Schaffner RN102-0.3-02 is a two-line common mode choke designed for power line filtering applications. It features an inductance of 12 mH at a test frequency of 10 kHz and supports a maximum DC current of 300 mA. The component exhibits a maximum DC resistance of 1.1 ohms. It utilizes through-hole mounting with pad-style terminals and operates within a temperature range of -40°C to +100°C. The physical dimensions are approximately 17.7 x 17.1 x 12.6 mm, constructed with ferrite core material.

Feature Summary

• Provides effective common mode noise suppression for differential signal lines
• Designed for robust performance in high-temperature industrial environments
• Utilizes ferrite core technology for stable inductance characteristics

Applications

• Power line EMI filtering in electronic equipment
• Signal integrity protection in communication interfaces
• Industrial control system input/output stages

Procurement Notes

Verify the specific suffix (e.g., -12M) against the required inductance value, as the base part number may denote the series or form factor rather than exact electrical parameters. Confirm RoHS compliance status and lead times directly with authorized distributors or TE Connectivity/Schaffner representatives prior to ordering. Ensure the selected variant matches the required current rating and physical footprint for the target PCB layout.

Selection Notes

Select this component when a compact, through-hole solution is required for low-current power line filtering. The 300 mA rating suits light-duty applications where space constraints limit the use of larger chokes. Consider the 1.1 ohm DC resistance impact on voltage drop if used in sensitive power paths. Verify that the 12 mH inductance provides sufficient attenuation at the target interference frequencies.

Part Context

This component belongs to the Schaffner RN series of common mode chokes, which are widely used for electromagnetic compatibility (EMC) improvements. The RN102-0.3-02 specifically represents a standard size variant within this family, offering a balance between inductance performance and physical footprint for general-purpose filtering tasks.

Replacement Considerations

The RN102-0.3-02-12M is a confirmed substitute part number representing the same electrical specifications. Other variants within the RN102-0.3-02 series, such as those with different inductance values (e.g., -22M), may serve as alternatives if the filtering requirements differ.