ELF-18D615 Common Mode Choke Equivalent & Substitute Parts

Part Overview

The ELF-18D615 is a 39 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 at 700mA maximum current with a typical DC resistance of 1.075Ohm and is rated for 250V AC operation across an extended temperature range of -20°C to 105°C.

Substiute Parts

ELF-18D615

Panasonic Electronic ComponentsIn Stock: 1141ELF-18D615 Datasheet

Current PartRFQ

LF2823NP-393

Sumida America Components Inc.In Stock: 892LF2823NP-393 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ELF-18D615 are identified based on strict electrical and mechanical parameter matching within acceptable tolerances for common mode choke applications. The following parameters determine substitution eligibility:

Critical Matching Parameters:

• Inductance value: 39 mH @ 1 kHz (exact match required)
• Number of lines: 2 (exact match required)
• Current rating: 700mA (exact match required)
• Mounting type: Through Hole (exact match required)
• Package configuration: Vertical, 4 PC Pin (exact match required)

Allowable Variation Parameters:

• DC Resistance (DCR): Tolerance within component specification limits
• Physical dimensions: Minor variations acceptable within standard mechanical envelope constraints
• Operating temperature range: Must support minimum -20°C to 105°C operational window

The LF2823NP-393 manufactured by Sumida America Components Inc. meets all critical matching parameters and is classified as an active product, providing long-term availability for replacement applications.

Parameter Comparison

Engineering Selection Recommendations

The LF2823NP-393 is the identified substitute for the obsolete ELF-18D615 based on matching electrical specifications and mechanical compatibility. The substitute part is manufactured by Sumida America Components Inc. and maintains active product status, ensuring continued availability for procurement and support.

Selection Basis:

• Electrical parameters match across inductance, current rating, and line configuration
• Through-hole mounting and vertical 4-pin package configuration are identical
• Physical dimensions are within acceptable mechanical envelope tolerances for PCB layout compatibility
• Both components maintain MSL 1 (Unlimited) moisture sensitivity classification
• Active product status of the substitute ensures long-term supply chain viability

The DC resistance differential (1.075Ohm typical for ELF-18D615 versus 1.43Ohm for LF2823NP-393) must be evaluated within the context of the specific application circuit to determine thermal and power dissipation impact.

Frequently Asked Questions (FAQ)

Q: What makes the LF2823NP-393 a suitable substitute for the ELF-18D615?

A: Both components share identical inductance values (39 mH @ 1 kHz), current ratings (700mA), line configuration (2-line), and mounting specifications (through-hole, vertical 4-pin package). These parameters are the primary determinants of functional equivalence in common mode choke applications.

Q: Are there physical compatibility concerns when substituting the LF2823NP-393 for the ELF-18D615?

A: Physical dimensions are comparable with minor variations. The ELF-18D615 measures 1.122" L x 1.142" W x 0.925" H, while the LF2823NP-393 measures 1.122" L x 1.122" W x 0.945" H. These differences are within standard mechanical tolerances for through-hole component placement on PCBs with vertical pin configurations.

Q: How does the DC resistance difference affect substitution?

A: The LF2823NP-393 exhibits a higher DC resistance (1.43Ohm) compared to the ELF-18D615 (1.075Ohm typical). This difference results in increased power dissipation and heat generation at rated current. Circuit-level thermal analysis is required to confirm acceptable performance in the target application.

Q: What is the product status significance of the substitute part?

A: The LF2823NP-393 maintains active product status, indicating ongoing manufacturing and availability through authorized distributors. The ELF-18D615 is classified as obsolete, making the active substitute essential for long-term system support and new design implementations.

Q: Are there compliance or certification differences between the two parts?

A: Both components are classified as EAR99 for export control purposes and maintain MSL 1 (Unlimited) moisture sensitivity levels. Specific voltage ratings and operating temperature ranges are fully specified for the ELF-18D615; equivalent data for the LF2823NP-393 should be confirmed with the manufacturer for critical applications.