FN7611-250-M12

Overview

The Schaffner EMC Inc. FN7611-250-M12 is a third-order LC (Pi) low-pass EMI filter designed for high-current applications. It features a rated current of 250 A and a voltage rating of 300 VAC. The component utilizes axial threaded terminals for secure connection and supports bolt mounting for chassis or panel installation. Operating within a temperature range of -40°C to 100°C, it functions at frequencies from DC to 400 Hz. Key internal parameters include an inductance of 186 nH and capacitance of 1 µF, with a channel resistance of 0.00028 Ohms.

Feature Summary

• Third-order LC Pi topology provides steep attenuation characteristics for effective noise suppression.
• High current handling capability suitable for demanding power distribution environments.
• Robust mechanical construction with axial threaded terminals and bolt mounting options.

Applications

• Mobile equipment data lines
• High-power industrial machinery
• Uninterruptible power supply systems

Procurement Notes

Verify the specific terminal thread size and pitch against the mechanical drawing before integration. Confirm that the mounting hardware accommodates the required bolt torque specifications. Ensure the operating environment remains within the specified -40°C to 100°C temperature range to maintain performance integrity and safety compliance.

Selection Notes

Select this component when high attenuation is required for low-frequency noise in high-current circuits. The third-order design offers superior filtering compared to standard second-order filters. Consider the physical dimensions and mounting requirements to ensure compatibility with the enclosure design. Evaluate the leakage current and impedance characteristics against system sensitivity requirements.

Part Context

This part belongs to the FN7611 series of high-performance EMI filters manufactured by Schaffner EMC Inc. The series is engineered for robust electromagnetic compatibility in challenging industrial and mobile environments. These filters are characterized by their ability to handle significant current loads while maintaining compact form factors relative to their performance capabilities.

Replacement Considerations

Publicly confirmed substitute part numbers for FN7611-250-M12 were not identified in available documentation. Verify electrical and mechanical compatibility if considering alternative models from other manufacturers.