ELF-18D213 Common Mode Choke Equivalent & Substitute Parts

Part Overview

The ELF-18D213 is a 3.3 mH 2-line common mode choke manufactured by Panasonic Electronic Components, designed for through-hole mounting in power line filtering applications. This component features a vertical 4-pin configuration with 250V AC voltage rating and operates across the temperature range of -20°C to 105°C. The product is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

ELF-18D213

Panasonic Electronic ComponentsIn Stock: 943ELF-18D213 Datasheet

Current PartRFQ

EH20-1.2-02-3M3

Schaffner EMC Inc.In Stock: 1034EH20-1.2-02-3M3 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ELF-18D213 is determined by the following critical parameters:

• Inductance Value: 3.3 mH nominal inductance is the primary functional requirement
• Number of Lines: 2-line configuration for common mode filtering
• Voltage Rating: 250V AC minimum rating for power line applications
• Mounting Type: Through-hole configuration for PCB integration
• Pin Configuration: 4-pin package for electrical connectivity
• Physical Compatibility: Dimensional constraints for board layout

The substitute part EH20-1.2-02-3M3 meets these core substitution criteria while introducing enhanced specifications in current rating and DC resistance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The EH20-1.2-02-3M3 serves as a direct functional substitute for the obsolete ELF-18D213 based on matching inductance value, line count, voltage rating, and through-hole mounting configuration. The substitute part provides additional engineering advantages including ROHS3 compliance and specified current rating of 1.2A with 127mOhm typical DC resistance.

Physical layout considerations exist due to orientation differences: the ELF-18D213 uses vertical mounting while the EH20-1.2-02-3M3 employs horizontal mounting. Both components maintain compatible footprint dimensions within 1mm variance, though PCB trace routing and component placement must be verified for the specific application.

The operating temperature range of the substitute part (-25°C ~ 100°C) provides extended low-temperature performance compared to the original (-20°C ~ 105°C), with a 5°C reduction in maximum operating temperature. This difference is acceptable for most industrial power line filtering applications.

Frequently Asked Questions (FAQ)

Q: Can the EH20-1.2-02-3M3 directly replace the ELF-18D213 without circuit modification?

A: The EH20-1.2-02-3M3 maintains the same 3.3 mH inductance value, 2-line configuration, and 250V AC voltage rating, making it functionally equivalent. However, the horizontal mounting orientation differs from the vertical configuration of the original part, requiring PCB layout verification.

Q: What is the significance of the different frequency measurements (1 kHz vs 400 Hz)?

A: Both parts specify 3.3 mH inductance at their respective measurement frequencies. The inductance value remains consistent for power line filtering applications. The measurement frequency difference reflects manufacturer test standards and does not affect functional substitution.

Q: Does the 1.2A current rating of the substitute part impose any limitations?

A: The ELF-18D213 does not specify a current rating in the provided data. The EH20-1.2-02-3M3 current rating of 1.2A establishes a defined operating limit for the substitute. Applications must verify that circuit current does not exceed this specification.

Q: Are there compliance implications when substituting the RoHS non-compliant original with the ROHS3 compliant substitute?

A: The ROHS3 compliance of the EH20-1.2-02-3M3 represents an improvement over the non-compliant ELF-18D213. This substitution supports regulatory compliance requirements for new designs and system updates in regions with RoHS directives.

Q: How do the dimensional differences affect PCB design?

A: The EH20-1.2-02-3M3 is 1mm longer (21mm vs 20mm) and 2.2mm shorter in height (18.80mm vs 20mm) than the ELF-18D213. The horizontal mounting orientation requires different trace routing compared to the vertical original. PCB layout must be updated to accommodate these physical differences.