LF2020NP-333

Common Mode Chokes Overview

The LF2020NP-333 is a through-hole common mode choke manufactured by Sumida America Components Inc. It features an inductance of 33 mH with a tolerance of 10%. The component supports a maximum DC current of 300 mA and exhibits a maximum DC resistance of 3.42 Ohms. It operates within a temperature range of -40°C to +100°C. The device utilizes a vertical mounting style with four pins.

Common Mode Chokes Feature Summary

• Provides common mode noise suppression for two-line circuits
• Utilizes a vertical through-hole mounting configuration
• Constructed with ferrite core material

Common Mode Chokes Applications

• Power supply input filtering
• Signal line noise suppression
• EMI reduction in electronic equipment

Common Mode Chokes Procurement Notes

Verify the specific manufacturer designation, as sourcing data references both Sumida Corporation and Sumida America Components Inc. Confirm the pin configuration matches the four-pin vertical requirement. Ensure the 3.42 Ohm DC resistance specification aligns with circuit design constraints before procurement.

Common Mode Chokes Selection Notes

Select this component when a high-inductance common mode choke is required for low-current applications. The 300 mA rating limits suitability for high-power stages. Verify that the 3.42 Ohm DC resistance does not cause excessive voltage drop in the target circuit path compared to lower-resistance alternatives.

Common Mode Chokes Part Context

This part belongs to the LF series of common mode chokes from Sumida. It serves as a functional substitute for the obsolete UU10LF-B333 model. The series provides shielded or unshielded options for EMI suppression in consumer electronics and industrial control systems requiring through-hole assembly.

Common Mode Chokes Replacement Considerations

The UU10LF-B333 is identified as an obsolete part number with the LF2020NP-333 listed as a similar available substitute. Verify electrical compatibility before replacement.

Common Mode Chokes FAQ

What is the maximum DC current rating for the LF2020NP-333?

The maximum DC current rating is 300 mA.

Is the LF2020NP-333 a shielded component?

Public documentation identifies it as a common mode choke but does not explicitly state magnetic shielding status; it is distinct from the shielded CDRH series.