LF1290NP-681

Common Mode Chokes Overview

The LF1290NP-681 is a through-hole common mode choke manufactured by Sumida America Components Inc. It features an inductance of 680 µH measured at 1 kHz and supports a maximum current rating of 850 mA. The component exhibits a DC resistance of 250 mOhm per line. Designed for power applications, it utilizes a ferrite core construction to suppress electromagnetic interference in dual-line circuits.

Common Mode Chokes Feature Summary

• Dual-line common mode noise suppression
• Through-hole radial mounting configuration
• Ferrite core construction

Common Mode Chokes Applications

• Power supply input filtering
• Signal line noise reduction
• Electromagnetic interference suppression

Common Mode Chokes Procurement Notes

Verify the specific package dimensions and lead configuration against the official datasheet before PCB layout finalization. Confirm that the 850 mA current rating aligns with the target circuit requirements. Ensure compliance with relevant environmental standards such as RoHS as documented in the manufacturer's certification files.

Common Mode Chokes Selection Notes

Select this component when through-hole assembly is required for robust mechanical stability in power applications. Compare the 680 µH inductance value against system filtering needs. Evaluate the 250 mOhm DC resistance impact on voltage drop relative to the 850 mA operating current.

Common Mode Chokes Part Context

This part belongs to Sumida's passive components portfolio, specifically within the common mode choke category. It serves as a specialized filter for suppressing common mode noise in electronic circuits. The product is distinct from Sumida's power inductor series, focusing on differential signal integrity rather than energy storage.

Common Mode Chokes Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with alternative common mode chokes based on matching inductance, current ratings, and physical footprint constraints.