ELF-22V040A Common Mode Choke Equivalent & Substitute Parts

Part Overview

The ELF-22V040A is a 2-line common mode choke manufactured by Panasonic Electronic Components, designed for through-hole mounting applications requiring 4A current handling capability. This component features a typical DC resistance of 59mOhm and is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

ELF-22V040A

Panasonic Electronic ComponentsIn Stock: 996ELF-22V040A Datasheet

Current PartRFQ

EV20-0.8-02-5M6

Schaffner EMC Inc.In Stock: 1498EV20-0.8-02-5M6 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ELF-22V040A requires evaluation based on the following critical parameters:

• Number of Lines: Must remain 2-line configuration for circuit compatibility
• Mounting Type: Through-hole mounting required for PCB assembly compatibility
• Package Configuration: Vertical, 4-pin package maintains footprint and pin alignment
• Current Rating: Substitute must support minimum 4A operation or higher
• DC Resistance: Lower DCR values improve efficiency; higher values acceptable if circuit design permits
• Voltage Rating: AC voltage rating of 250V or higher supports standard power line applications
• Physical Dimensions: Compact form factor (21.00mm L x 16.00mm W x 26.00mm H) fits space-constrained layouts

The EV20-0.8-02-5M6 from Schaffner EMC Inc. qualifies as a functional substitute based on matching core electrical and mechanical parameters within acceptable engineering tolerances.

Parameter Comparison

Engineering Selection Recommendations

Primary Consideration: The EV20-0.8-02-5M6 is classified as Active product status, ensuring long-term availability and supply chain continuity compared to the obsolete ELF-22V040A.

Compliance Advantage: The EV20-0.8-02-5M6 meets RoHS3 compliance requirements, whereas the ELF-22V040A is RoHS non-compliant. For applications subject to environmental regulations or customer compliance mandates, the Schaffner substitute is the appropriate selection.

Current Rating Limitation: The EV20-0.8-02-5M6 supports maximum 800mA operation, which is lower than the ELF-22V040A's 4A rating. Circuit designs operating at or above 1A require verification that the substitute's current capacity is adequate for the intended application.

DC Resistance Trade-off: The EV20-0.8-02-5M6 exhibits higher DC resistance (245mOhm typical) compared to the ELF-22V040A (59mOhm typical). This results in increased power dissipation and heat generation. Thermal analysis of the circuit is necessary to confirm acceptable operating conditions.

Physical Footprint: The EV20-0.8-02-5M6 occupies a smaller physical envelope, which may require PCB layout modification if the original design was optimized for the larger ELF-22V040A dimensions.

Frequently Asked Questions (FAQ)

Q: Can the EV20-0.8-02-5M6 directly replace the ELF-22V040A without circuit modification?

A: Direct replacement is possible only if the application current requirement does not exceed 800mA. The higher DC resistance of the substitute will increase power dissipation. PCB layout adjustment may be necessary due to smaller physical dimensions.

Q: What is the impact of the higher DC resistance in the EV20-0.8-02-5M6?

A: Higher DC resistance increases I²R losses. At 800mA, the EV20-0.8-02-5M6 dissipates approximately 0.157W compared to 0.024W for the ELF-22V040A at the same current. Thermal design review is required.

Q: Is the EV20-0.8-02-5M6 suitable for applications requiring 4A operation?

A: No. The EV20-0.8-02-5M6 is rated for maximum 800mA. Applications requiring 4A operation must use components with equivalent or higher current ratings.

Q: Does the RoHS3 compliance of the EV20-0.8-02-5M6 affect electrical performance?

A: RoHS3 compliance indicates material composition restrictions but does not alter electrical performance characteristics. The substitute maintains equivalent common mode filtering functionality within its rated current range.

Q: Are there dimensional compatibility concerns when substituting the EV20-0.8-02-5M6?

A: Yes. The EV20-0.8-02-5M6 is physically smaller (21.00mm L x 16.00mm W x 26.00mm H) compared to the ELF-22V040A (32.00mm L x 23.00mm W x 39.00mm H). PCB layout verification is necessary to confirm the smaller component fits within the available space and maintains proper clearances.

Q: What is the operating temperature range for the EV20-0.8-02-5M6?

A: The EV20-0.8-02-5M6 operates within -25°C to 100°C. Verify this range is compatible with the intended application environment.