ELF-18D656Y Common Mode Choke Equivalent & Substitute Parts

Part Overview

The ELF-18D656Y is a 2-line common mode choke (CMC) manufactured by Panasonic Electronic Components, designed for through-hole mounting applications requiring 2.5A current handling capability. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing system support and new design implementations. The part operates with a typical DC resistance of 87mOhm and is packaged in a vertical 4-pin configuration with dimensions of 29.00mm × 21.00mm.

Substiute Parts

ELF-18D656Y

Panasonic Electronic ComponentsIn Stock: 968ELF-18D656Y Datasheet

Current PartRFQ

B82734R2262B030

EPCOS - TDK ElectronicsIn Stock: 2310B82734R2262B030 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ELF-18D656Y is determined by the following critical parameters:

• Number of Lines: Must remain 2-line configuration for functional compatibility
• Current Rating: Substitute must support minimum 2.5A; higher ratings are acceptable
• Mounting Type: Through-hole mounting required for PCB assembly compatibility
• Package Configuration: Vertical 4-pin package maintains mechanical fit
• DC Resistance: Substitute DCR must be compatible with circuit design specifications
• Physical Dimensions: Footprint and height must accommodate existing PCB layouts

The B82734R2262B030 from EPCOS - TDK Electronics meets these substitution criteria as a 2-line common mode choke with through-hole vertical mounting, supporting 2.6A current rating, and maintaining compatible physical dimensions.

Parameter Comparison

Engineering Selection Recommendations

The B82734R2262B030 serves as the primary substitute for the obsolete ELF-18D656Y based on the following factors:

Product Status: The ELF-18D656Y is obsolete with no ongoing manufacturing. The B82734R2262B030 maintains active production status, ensuring long-term availability and supply chain continuity.

Compliance & Certifications: The B82734R2262B030 is ROHS3 compliant and carries approvals from ENEC, UR, and VDE, meeting modern regulatory requirements. The original ELF-18D656Y is RoHS non-compliant, making the substitute necessary for applications subject to current environmental and safety standards.

Electrical Compatibility: The substitute provides 2.6A current rating, exceeding the original 2.5A specification. The DC resistance increases from 87mOhm to 130mOhm; circuit design must accommodate this parameter change to ensure proper filtering performance and thermal management.

Physical Compatibility: The substitute maintains vertical 4-pin through-hole configuration with compatible width (21.00mm). Length increases from 29.00mm to 32.50mm, and height decreases from 34.60mm to 31.00mm. PCB layout verification is required to confirm footprint accommodation.

Frequently Asked Questions (FAQ)

Q: Can the B82734R2262B030 directly replace the ELF-18D656Y without circuit modifications?

A: The substitute maintains the same 2-line configuration and through-hole mounting, but the increased DC resistance (130mOhm vs. 87mOhm) affects circuit performance. Circuit analysis is required to confirm acceptable filtering characteristics and thermal dissipation with the higher resistance value.

Q: What is the impact of the increased DC resistance on system performance?

A: Higher DC resistance increases power dissipation and voltage drop across the component. For applications sensitive to these parameters, circuit simulation or testing is necessary to validate performance within acceptable limits.

Q: Are there physical layout considerations when substituting these parts?

A: Yes. The substitute is 4.60mm longer (32.50mm vs. 29.00mm) and 3.60mm shorter in height (31.00mm vs. 34.60mm). Verify that the PCB layout accommodates the increased length while confirming that the reduced height does not create clearance issues with adjacent components.

Q: Does the substitute meet current regulatory requirements?

A: The B82734R2262B030 is ROHS3 compliant with certifications from ENEC, UR, and VDE. The original ELF-18D656Y is RoHS non-compliant. For applications subject to RoHS or other environmental regulations, the substitute is the appropriate choice.

Q: What is the inductance specification of the substitute?

A: The B82734R2262B030 is specified at 10 mH @ 10 kHz. The original ELF-18D656Y inductance value is not provided in the available documentation. Confirm that the substitute inductance meets circuit design requirements.

Q: Is the substitute available in the same packaging format?

A: Both parts use vertical 4-pin through-hole packaging. The substitute is supplied in trays, while original packaging format for the ELF-18D656Y is not specified. Verify packaging compatibility with assembly processes.