ELF-18D614 Common Mode Choke Equivalent & Substitute Parts

Part Overview

The ELF-18D614 is a 1.8 mH common mode choke manufactured by Panasonic Electronic Components, designed for two-line filtering applications in through-hole configurations. This component is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing system support and new design implementations. The part operates within a temperature range of -20°C to 105°C and is rated for 250V AC operation.

Substiute Parts

ELF-18D614

Panasonic Electronic ComponentsIn Stock: 1105ELF-18D614 Datasheet

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LF2823NP-182

Sumida America Components Inc.In Stock: 990LF2823NP-182 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ELF-18D614 is determined by the following critical parameters:

• Inductance Value: Must match 1.8 mH @ 1 kHz
• Number of Lines: Must be 2-line configuration
• Mounting Type: Must be Through Hole
• Package Configuration: Must be Vertical, 4 PC Pin
• Current Rating: Must support minimum 2.8A operation
• DC Resistance: Must not exceed 62mOhm significantly
• Voltage Rating: Must support 250V AC minimum
• Physical Dimensions: Must fit within or match specified envelope

The LF2823NP-182 from Sumida America Components Inc. meets these core substitution criteria, maintaining identical inductance, line count, mounting type, and package configuration while operating within compatible electrical parameters.

Parameter Comparison

Engineering Selection Recommendations

The LF2823NP-182 serves as a direct functional substitute for the obsolete ELF-18D614 based on matching core electrical and mechanical specifications. Key considerations for selection:

Electrical Compatibility: Both parts maintain identical 1.8 mH inductance at 1 kHz and 2-line configuration. The LF2823NP-182 operates at 2.6A maximum current versus 2.8A for the ELF-18D614, representing a 7% reduction in current capacity. DC resistance increases from 62mOhm to 72mOhm, a 16% increase. These differences remain within acceptable tolerance for most common mode filtering applications.

Compliance Status: The LF2823NP-182 is ROHS3 compliant and maintains active product status, ensuring long-term availability and supply chain stability. The ELF-18D614's obsolete status and RoHS non-compliance status necessitate transition to the substitute part for new designs and ongoing support.

Physical Compatibility: Both parts utilize identical through-hole mounting with vertical 4-pin configuration. Dimensional differences are minimal: the LF2823NP-182 width is 0.020" (0.50mm) narrower, and height is 0.020" (0.50mm) taller. These variations remain within typical PCB layout tolerances.

Frequently Asked Questions (FAQ)

Q: Can the LF2823NP-182 directly replace the ELF-18D614 in existing designs?

A: Yes, the LF2823NP-182 is electrically and mechanically compatible for direct substitution. Both parts share identical inductance values, line counts, and through-hole package configurations. Minor dimensional variations and current rating differences do not prevent functional replacement in standard common mode filtering applications.

Q: What is the significance of the current rating difference between these parts?

A: The ELF-18D614 is rated for 2.8A maximum current, while the LF2823NP-182 is rated for 2.6A. If your application requires operation above 2.6A, the substitute part may not be suitable. For applications operating at or below 2.6A, this difference is not a limiting factor.

Q: How does the increased DC resistance of the LF2823NP-182 affect performance?

A: The LF2823NP-182 exhibits 72mOhm DC resistance compared to 62mOhm for the ELF-18D614. This 10mOhm increase results in slightly higher power dissipation at rated current. For most filtering applications, this difference is negligible; however, thermal performance should be evaluated in high-current or high-ambient-temperature environments.

Q: Are there any compliance or supply chain advantages to using the LF2823NP-182?

A: The LF2823NP-182 is ROHS3 compliant and maintains active product status, ensuring continued availability and regulatory compliance. The ELF-18D614 is obsolete and RoHS non-compliant, making the substitute part the preferred choice for new designs and long-term system support.

Q: Do the dimensional differences affect PCB layout?

A: Dimensional variations are minimal and fall within standard PCB layout tolerances. The LF2823NP-182 is 0.50mm narrower and 0.50mm taller than the ELF-18D614. Verify footprint compatibility with your specific PCB design, but these differences typically do not require layout modifications.

Q: What packaging options are available for these parts?

A: The ELF-18D614 is supplied in bulk packaging, while the LF2823NP-182 is also available in bulk. Both parts are through-hole components with identical pin configurations, simplifying procurement and assembly processes.