LF1290NP-392

Common Mode Chokes Overview

The LF1290NP-392 is a two-line common mode choke manufactured by Sumida America Components Inc. It features a fixed inductance of 3.9 mH measured at a test frequency of 1 kHz. The component supports a maximum current rating of 360 mA and exhibits a maximum DC resistance (DCR) of 1.2 Ohms. Designed for through-hole mounting, it utilizes vertical pins with four connection points. The unit operates within a temperature range of -40°C to +105°C and complies with RoHS standards.

Common Mode Chokes Feature Summary

• Provides effective noise suppression for differential signal lines in electronic circuits
• Utilizes a ferrite core construction optimized for high-frequency interference attenuation
• Features a robust through-hole design suitable for secure PCB integration

Common Mode Chokes Applications

• Noise filtering in data communication interfaces
• EMI suppression in power supply input stages
• Signal integrity protection in industrial control systems

Common Mode Chokes Procurement Notes

Verify the specific pin configuration and lead spacing against the mechanical drawing prior to PCB layout finalization. Confirm that the selected operating environment remains within the specified thermal limits to ensure long-term reliability. Cross-reference the manufacturer's latest datasheet for any updates on material composition or compliance certifications before placing orders.

Common Mode Chokes Selection Notes

Select this component when a moderate inductance value is required for common mode noise reduction in low-current applications. Ensure the rated current exceeds the peak operational load to prevent saturation. Consider the physical dimensions and mounting style compatibility with the target assembly process during the initial design phase.

Common Mode Chokes Part Context

This part belongs to Sumida's LF series of common mode chokes, which are engineered for general-purpose electromagnetic interference suppression. The series offers various inductance values tailored for different frequency ranges and current requirements, providing designers with flexible options for circuit protection and signal conditioning tasks.

Common Mode Chokes Replacement Considerations

Direct substitutes include the LF1290NP-472 and LF1290NP-682 from the same manufacturer family. Verify that alternative components match the required inductance tolerance and current handling capabilities to maintain circuit performance integrity.