ELF-18D450J Common Mode Choke Equivalent & Substitute Parts

Part Overview

The ELF-18D450J is a 2-line common mode choke (CMC) manufactured by Panasonic Electronic Components, designed for through-hole mounting applications requiring 1A current handling capability. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The part features a typical DC resistance of 384mOhm and is packaged in a vertical 4-pin configuration with dimensions of 25.00mm × 18.00mm × 29.80mm.

Substiute Parts

ELF-18D450J

Panasonic Electronic ComponentsIn Stock: 950ELF-18D450J Datasheet

Current PartRFQ

EV24-1.0-02-10M

Schaffner EMC Inc.In Stock: 2811EV24-1.0-02-10M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ELF-18D450J is determined by the following critical parameters:

• Number of Lines: Must be 2-line configuration
• Current Rating: Must support minimum 1A
• Mounting Type: Must be through-hole compatible
• Package Configuration: Must be vertical 4-pin package
• Physical Dimensions: Must fit within or closely match the 25.00mm × 18.00mm × 29.80mm envelope
• DC Resistance: Should be comparable (384mOhm typical for the original part)

The substitute part EV24-1.0-02-10M from Schaffner EMC Inc. meets these core substitution criteria. It maintains the 2-line configuration, 1A current rating, through-hole mounting, vertical 4-pin package, and similar physical dimensions (24.60mm × 17.40mm × 30.10mm). The substitute exhibits lower DC resistance (244mOhm typical) and includes additional specifications such as 10mH inductance at 400Hz and 250V AC voltage rating, which are compatible with the application requirements.

Parameter Comparison

Engineering Selection Recommendations

The EV24-1.0-02-10M serves as a direct functional substitute for the obsolete ELF-18D450J. Selection of this substitute is supported by the following engineering considerations:

Product Status: The ELF-18D450J is obsolete, whereas the EV24-1.0-02-10M is active and maintains current manufacturing support and availability (2715 pcs in stock).

Compliance: The EV24-1.0-02-10M is ROHS3 compliant and REACH unaffected, providing regulatory alignment for modern applications. The original ELF-18D450J is RoHS non-compliant, which may present constraints for new designs or markets with RoHS requirements.

Electrical Performance: The substitute exhibits superior DC resistance (244mOhm vs. 384mOhm), resulting in lower power dissipation and improved thermal performance. The specified 250V AC voltage rating and -25°C to 100°C operating temperature range provide defined performance boundaries suitable for industrial and commercial applications.

Physical Compatibility: Dimensional similarity (24.60mm × 17.40mm × 30.10mm vs. 25.00mm × 18.00mm × 29.80mm) ensures PCB layout compatibility with minimal redesign requirements.

Frequently Asked Questions (FAQ)

Q: Can the EV24-1.0-02-10M directly replace the ELF-18D450J without PCB modifications?

A: The EV24-1.0-02-10M is dimensionally compatible with the ELF-18D450J. Both components use vertical 4-pin through-hole packages with similar footprints. Verification of pin assignment and polarity is required before installation.

Q: What is the significance of the lower DC resistance in the substitute part?

A: The EV24-1.0-02-10M exhibits 244mOhm typical DC resistance compared to 384mOhm in the original part. Lower DC resistance reduces resistive losses and heat generation during operation, improving overall circuit efficiency.

Q: Is the EV24-1.0-02-10M suitable for applications requiring RoHS compliance?

A: Yes. The EV24-1.0-02-10M is ROHS3 compliant, meeting RoHS Directive 2011/65/EU requirements. The original ELF-18D450J is RoHS non-compliant and is not suitable for applications with RoHS mandates.

Q: Are there any thermal or environmental differences between these components?

A: The EV24-1.0-02-10M specifies an operating temperature range of -25°C to 100°C. The ELF-18D450J does not provide operating temperature specifications. The substitute's defined temperature range ensures predictable performance across industrial and commercial temperature environments.

Q: What packaging options are available for the substitute part?

A: The EV24-1.0-02-10M is supplied in bulk packaging. The original ELF-18D450J packaging format is not specified in the available data.