ELF-22V020B Common Mode Choke Equivalent & Substitute Parts

Part Overview

The ELF-22V020B is a 2-line common mode choke (CMC) manufactured by Panasonic Electronic Components, designed for through-hole mounting applications requiring 8A current handling capability with 14mOhm typical DC resistance. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The vertical 4-pin configuration and compact footprint (32.00mm × 23.00mm × 39.00mm) define the mechanical constraints for equivalent component selection.

Substiute Parts

ELF-22V020B

Panasonic Electronic ComponentsIn Stock: 1006ELF-22V020B Datasheet

Current PartRFQ

EV28-1.5-02-27M-X

Schaffner EMC Inc.In Stock: 1128EV28-1.5-02-27M-X Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ELF-22V020B is determined by the following critical parameters:

• Number of Lines: Must remain 2-line configuration for common mode filtering function
• Mounting Type: Through-hole mounting required for PCB compatibility
• Package Configuration: Vertical 4-pin package maintains board layout compatibility
• Current Rating: Substitute must support minimum 8A operation
• DC Resistance: Substitute DCR must not exceed application thermal and efficiency requirements
• Physical Dimensions: Footprint and height constraints limit mechanical compatibility

The EV28-1.5-02-27M-X from Schaffner EMC Inc. is identified as a substitute part. However, this substitution involves trade-offs in electrical performance: the substitute provides lower current rating (1.5A vs. 8A) and higher DC resistance (287mOhm vs. 14mOhm), while offering active product status and modern RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

ELF-22V020B (Obsolete Status): This component is no longer in active production. Continued use is limited to existing inventory or legacy system maintenance. The RoHS non-compliant status restricts application in new designs subject to RoHS regulations.

EV28-1.5-02-27M-X (Active Substitute): This component offers active product status and RoHS3 compliance, supporting modern regulatory requirements. The substitute is mechanically compatible with the original footprint and maintains 2-line, through-hole, vertical 4-pin configuration. However, the reduced current rating (1.5A vs. 8A) and significantly higher DC resistance (287mOhm vs. 14mOhm) restrict this substitute to applications with lower current demands and where increased insertion loss is acceptable.

Selection between these parts depends on application current requirements and regulatory compliance mandates. Direct substitution is not recommended for high-current applications (>1.5A) without thermal and performance re-evaluation.

Frequently Asked Questions (FAQ)

Q: Can the EV28-1.5-02-27M-X directly replace the ELF-22V020B in all applications?

A: No. The substitute part has a maximum current rating of 1.5A compared to the original 8A rating. Direct substitution is only viable for applications operating at or below 1.5A. Higher current applications require alternative sourcing or design modification.

Q: What is the impact of the higher DC resistance in the substitute part?

A: The EV28-1.5-02-27M-X exhibits 287mOhm DCR versus 14mOhm in the original part. This 20× increase in resistance results in higher power dissipation and insertion loss. Thermal analysis is required to confirm acceptability in the target application.

Q: Are the physical dimensions compatible?

A: The substitute part (29.20mm L × 21.00mm W × 35.70mm H) is slightly smaller than the original (32.00mm L × 23.00mm W × 39.00mm H). Both maintain vertical 4-pin through-hole configuration, making them mechanically compatible with the same PCB footprint, though the substitute occupies less board space.

Q: What are the regulatory compliance differences?

A: The ELF-22V020B is RoHS non-compliant, while the EV28-1.5-02-27M-X is RoHS3 compliant. For applications subject to RoHS regulations, the substitute part meets current compliance requirements.

Q: Is the substitute part suitable for power line filtering applications?

A: The EV28-1.5-02-27M-X is specified for power line filtering with 250V AC rating and -25°C to 100°C operating temperature range. The original part does not specify these parameters. Confirm application requirements before selection.