LF-220N Line Filter Equivalent & Substitute Parts

Part Overview

The KEMET LF-220N is a single-phase EMC/EMI line filter rated for 250VDC/VAC at 20A with chassis mount configuration and M6 threaded post termination. This component is classified as Last Time Buy, indicating discontinued production status. Identifying qualified substitute parts is essential for ongoing procurement, design updates, and long-term supply chain continuity.

Substiute Parts

LF-220N

KEMETIn Stock: 1011LF-220N Datasheet

Current PartRFQ

ES1-T20

DITIn Stock: 1210ES1-T20 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LF-220N are identified based on strict electrical and mechanical parameter matching:

Electrical Equivalence Criteria:

• Single-phase filter topology
• Single-stage configuration
• 250V DC and 250V AC voltage ratings
• 20A current capacity

Mechanical Compatibility Criteria:

• Chassis mount mounting type
• Threaded post termination (M6 or M4 acceptable with appropriate connector adaptation)

Compliance Criteria:

• ROHS3 compliance maintained
• EAR99 export classification alignment

The DIT ES1-T20 satisfies all critical electrical parameters and maintains regulatory compliance. The termination style differs (M4 vs. M6 threaded post), which represents a mechanical interface variation requiring connector consideration but does not affect electrical substitution validity.

Parameter Comparison

Engineering Selection Recommendations

For LF-220N Substitution:

The DIT ES1-T20 is electrically and functionally equivalent to the KEMET LF-220N across all critical parameters: single-phase topology, single-stage configuration, 250V DC/AC rating, and 20A current capacity. Both components maintain ROHS3 compliance and EAR99 export classification.

Mechanical Consideration:

The termination interface differs: LF-220N uses M6 threaded posts while ES1-T20 uses M4 threaded posts. This variation requires connector or adapter specification during integration but does not affect electrical performance or filtering characteristics.

Compliance Advantage:

The ES1-T20 includes documented approvals from CQC, CSA, TUV, and UR agencies, providing additional regulatory documentation compared to the LF-220N specification sheet. The ES1-T20 operating temperature range (-25°C ~ 85°C) exceeds the LF-220N range (-20°C ~ 55°C), offering broader environmental compatibility.

Inventory Status:

ES1-T20 inventory (1153 pcs) exceeds LF-220N availability (928 pcs), supporting long-term supply continuity given the LF-220N Last Time Buy status.

Frequently Asked Questions (FAQ)

Q: Can ES1-T20 directly replace LF-220N without circuit modification?

A: Electrical substitution is valid. The M4 vs. M6 threaded post difference requires mechanical interface adaptation (connector or post adapter) but does not necessitate circuit redesign.

Q: Are the voltage and current ratings identical?

A: Yes. Both components are rated 250V DC/AC at 20A, ensuring equivalent electrical performance in single-phase EMC/EMI filtering applications.

Q: Does the operating temperature range difference affect substitution?

A: The ES1-T20 range (-25°C ~ 85°C) encompasses the LF-220N range (-20°C ~ 55°C). Substitution is valid for applications within the LF-220N temperature specification. Applications requiring extended temperature operation benefit from ES1-T20 capability.

Q: What is the significance of the approval agencies listed for ES1-T20?

A: CQC, CSA, TUV, and UR certifications indicate third-party validation of safety and performance standards. These certifications support regulatory compliance documentation for end-use applications.

Q: Is frequency specification critical for substitution?

A: The ES1-T20 specifies 50 ~ 60Hz operating frequency. The LF-220N does not specify frequency in the provided data. Both components function in standard industrial power distribution (50/60Hz). Substitution is valid for these standard frequencies.

Q: How should the M6 to M4 termination difference be managed?

A: Connector specifications must be updated to accommodate M4 threaded posts. Existing M6 connectors are not compatible. Mechanical drawings and assembly procedures require revision to reflect the smaller post diameter.