ELF-22V020A Common Mode Choke Equivalent & Substitute Parts

Part Overview

The ELF-22V020A is a 2-line common mode choke (CMC) manufactured by Panasonic Electronic Components, designed for through-hole mounting applications requiring 2A 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 are critical filtering components in power line applications, providing electromagnetic interference (EMI) suppression by attenuating common-mode noise while allowing differential-mode signals to pass. The obsolete status of the ELF-22V020A necessitates evaluation of active alternative components that maintain electrical and mechanical compatibility with existing designs.

Substiute Parts

ELF-22V020A

Panasonic Electronic ComponentsIn Stock: 1255ELF-22V020A 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-22V020A is determined by the following critical parameters that must be maintained or improved:

Electrical Compatibility:

• Number of Lines: 2 (fixed requirement)
• Current Rating: 2A minimum (equal or higher acceptable)
• DC Resistance: 203 mOhm typical (lower DCR values acceptable for improved performance)

Mechanical Compatibility:

• Mounting Type: Through Hole (required)
• Package / Case: Vertical, 4 PC Pin (required for PCB layout compatibility)
• Physical Dimensions: Must fit within or closely match the original footprint (32.00 mm L x 23.00 mm W x 39.00 mm H maximum)

Regulatory & Environmental:

• ECCN Classification: EAR99 (maintained)
• Moisture Sensitivity: MSL 1 or equivalent

The EV35-2.0-02-20M from Schaffner EMC Inc. qualifies as a direct substitute based on these parameters.

Parameter Comparison

Engineering Selection Recommendations

The EV35-2.0-02-20M is qualified as a direct substitute for the obsolete ELF-22V020A based on the following engineering criteria:

Electrical Equivalence: The substitute maintains the 2-line configuration and 2A current rating. The DC resistance of 150 mOhm is lower than the original 203 mOhm, resulting in reduced power dissipation and improved thermal performance without compromising filtering characteristics.

Mechanical Compatibility: Both components use identical through-hole, vertical 4-pin package configurations. The EV35-2.0-02-20M dimensions (36.00 mm L x 24.50 mm W x 42.70 mm H) are slightly larger than the original (32.00 mm L x 23.00 mm W x 39.00 mm H). PCB layout verification is required to confirm clearance in space-constrained applications.

Product Status & Availability: The EV35-2.0-02-20M is active in production with documented inventory availability (811 pcs), ensuring long-term procurement reliability compared to the obsolete ELF-22V020A.

Regulatory Compliance: Both components share EAR99 ECCN classification. The substitute is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

Frequently Asked Questions (FAQ)

Q: Can the EV35-2.0-02-20M be used as a direct replacement for the ELF-22V020A?

A: Yes. Both components are 2-line common mode chokes with 2A current ratings, through-hole vertical 4-pin packages, and EAR99 classification. The substitute has lower DC resistance (150 mOhm vs. 203 mOhm) and specified AC voltage rating (250V), providing equivalent or improved performance. Physical dimensions are slightly larger; PCB layout verification is required.

Q: What are the key electrical parameters that determine substitution compatibility?

A: The critical parameters are: number of lines (2), current rating (2A minimum), mounting type (through-hole), and package configuration (vertical 4-pin). DC resistance values below the original specification are acceptable. Inductance values and frequency response are not specified for the original part, so direct comparison is not possible.

Q: Are there any physical installation considerations when switching to the EV35-2.0-02-20M?

A: The substitute is approximately 4 mm longer, 1.5 mm wider, and 3.7 mm taller than the original. Verify that the PCB layout and surrounding component placement accommodate these dimensional differences. The vertical 4-pin configuration remains identical, so pin spacing and hole pattern are compatible.

Q: What is the difference in DC resistance between the two parts, and does it matter?

A: The EV35-2.0-02-20M has 150 mOhm DCR compared to the ELF-22V020A's 203 mOhm. Lower DC resistance reduces resistive losses and heat generation at rated current (2A), improving efficiency. This is a beneficial characteristic for the substitute.

Q: Is the EV35-2.0-02-20M compliant with current environmental standards?

A: Yes. The substitute is ROHS3 compliant and REACH unaffected, meeting current environmental regulations. The original ELF-22V020A status in this regard is not specified.

Q: What is the inductance specification for these common mode chokes?

A: The ELF-22V020A inductance value is not provided in the available technical data. The EV35-2.0-02-20M is specified at 20 mH @ 400 Hz. For applications requiring specific inductance values, detailed frequency response curves and impedance characteristics should be obtained from manufacturer datasheets.