ELF-22V025B Common Mode Choke Equivalent & Substitute Parts

Part Overview

The ELF-22V025B is a 2-line common mode choke 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 functionally equivalent substitute parts essential for ongoing system support, design updates, and procurement continuity.

Common mode chokes in this category are used in power line filtering and EMI suppression applications where dual-line filtering is required. The obsolete status of the ELF-22V025B necessitates evaluation of active alternative components that maintain electrical and mechanical compatibility.

Substiute Parts

ELF-22V025B

Panasonic Electronic ComponentsIn Stock: 920ELF-22V025B Datasheet

Current PartRFQ

EV35-2.0-02-20M

Schaffner EMC Inc.In Stock: 898EV35-2.0-02-20M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ELF-22V025B is determined by the following critical parameters:

• Number of Lines: Must remain 2-line configuration for functional equivalence
• Mounting Type: Must be through-hole to maintain PCB compatibility
• Package / Case: Must be vertical, 4 PC pin configuration for socket and board layout compatibility
• Current Rating: Substitute must support minimum 2.5A or higher to handle the same load conditions
• DC Resistance (DCR): Substitute DCR should not significantly exceed the original specification to avoid excessive power dissipation
• Physical Dimensions: Substitute footprint must be compatible with existing PCB layouts

The EV35-2.0-02-20M from Schaffner EMC Inc. meets these substitution criteria as an active product with compatible electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The EV35-2.0-02-20M is an active substitute for the obsolete ELF-22V025B based on the following factors:

Electrical Compatibility: Both components maintain 2-line common mode choke configuration with compatible current handling in the 2A to 2.5A range. The EV35-2.0-02-20M DCR of 150mOhm is within acceptable tolerance of the original 138mOhm specification, with negligible impact on power dissipation in typical applications.

Mechanical Compatibility: Both components feature through-hole mounting with vertical, 4 PC pin package configuration. Physical dimensions are comparable, with the EV35-2.0-02-20M footprint slightly larger (36.00mm x 24.50mm vs. 32.00mm x 23.00mm). PCB layout verification is required to confirm clearance compatibility.

Regulatory Compliance: The EV35-2.0-02-20M carries ROHS3 compliance and REACH unaffected status, meeting modern regulatory requirements. The ELF-22V025B compliance status is not specified.

Product Status: The EV35-2.0-02-20M is an active product with current manufacturing support, ensuring long-term availability and supply chain stability compared to the obsolete ELF-22V025B.

Frequently Asked Questions (FAQ)

Q: Can the EV35-2.0-02-20M directly replace the ELF-22V025B without PCB modifications?

A: The EV35-2.0-02-20M maintains compatible through-hole, 4 PC pin vertical mounting configuration. However, the slightly larger physical dimensions (36.00mm x 24.50mm vs. 32.00mm x 23.00mm) require PCB layout verification to confirm adequate clearance around the component footprint and adjacent circuitry.

Q: What is the impact of the 2A current rating on the EV35-2.0-02-20M versus the 2.5A rating of the ELF-22V025B?

A: The EV35-2.0-02-20M is rated for 2A maximum current, which is 0.5A lower than the original 2.5A specification. Applications operating at or near 2.5A may exceed the substitute component's rating. Current load analysis is required to determine if operation within the 2A limit is acceptable for the intended application.

Q: How do the DCR specifications compare between these components?

A: The ELF-22V025B specifies 138mOhm typical DCR, while the EV35-2.0-02-20M specifies 150mOhm typical DCR. This 12mOhm difference represents approximately 8.7% higher resistance in the substitute. Power dissipation impact is proportional to I²R; at 2A operation, this translates to minimal additional heat generation in most applications.

Q: Are there any compliance or certification differences?

A: The EV35-2.0-02-20M is ROHS3 compliant and REACH unaffected. The ELF-22V025B compliance status is not documented in available specifications. Modern procurement standards typically require ROHS3 compliance, making the EV35-2.0-02-20M the preferred choice for new designs and updated systems.

Q: What is the inductance specification for the EV35-2.0-02-20M?

A: The EV35-2.0-02-20M is specified at 20 mH @ 400 Hz. The ELF-22V025B inductance value is not provided in available documentation. Inductance matching should be verified if the application has specific filtering frequency requirements.