ELF-22V070A Common Mode Choke Equivalent & Substitute Parts

Part Overview

The ELF-22V070A is a 2-line common mode choke (CMC) manufactured by Panasonic Electronic Components, designed for through-hole mounting applications requiring 7A current handling capability. This component features a typical DC resistance of 21mOhm and is part of the V series product line. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support, design updates, and procurement continuity.

Substiute Parts

ELF-22V070A

Panasonic Electronic ComponentsIn Stock: 1168ELF-22V070A Datasheet

Current PartRFQ

EV20-1.5-02-1M8

Schaffner EMC Inc.In Stock: 738EV20-1.5-02-1M8 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ELF-22V070A requires evaluation based on the following critical parameters that define functional equivalence for 2-line common mode choke applications:

Primary Substitution Criteria:

• Number of Lines: Must be 2-line configuration
• Mounting Type: Must be Through Hole
• Package / Case: Must be Vertical, 4 PC Pin
• Current Rating: Must meet or exceed 7A requirement
• DC Resistance: Should be comparable to 21mOhm (Typ) to maintain circuit performance

The identified substitute part EV20-1.5-02-1M8 from Schaffner EMC Inc. shares the core functional architecture (2-line CMC, through-hole mounting, vertical 4-pin package) but operates at a reduced current rating of 1.5A with elevated DC resistance of 72mOhm (Typ). This substitute is suitable only for applications where the current requirement does not exceed 1.5A and where the higher DC resistance is acceptable for the intended circuit design.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Same Current Rating): The EV20-1.5-02-1M8 is not a direct replacement for the ELF-22V070A due to significant current rating mismatch (1.5A vs. 7A). Direct substitution is not recommended for applications requiring the full 7A current capacity of the original part.

For Current-Limited Applications: The EV20-1.5-02-1M8 may be considered as a substitute only in applications where circuit current does not exceed 1.5A. The substitute offers the advantage of active product status and ROHS3 compliance, addressing obsolescence and regulatory requirements. However, the elevated DC resistance (72mOhm vs. 21mOhm) will result in increased power dissipation and voltage drop across the component.

Compliance Considerations: The original ELF-22V070A is RoHS non-compliant. The substitute EV20-1.5-02-1M8 is ROHS3 compliant and REACH unaffected, making it suitable for applications subject to modern environmental and regulatory standards.

Frequently Asked Questions (FAQ)

Q: Can the EV20-1.5-02-1M8 be used as a direct replacement for the ELF-22V070A? A: No. The EV20-1.5-02-1M8 has a maximum current rating of 1.5A, while the ELF-22V070A is rated for 7A. Direct substitution is only possible if your application current requirement does not exceed 1.5A.

Q: What is the impact of the higher DC resistance in the substitute part? A: The EV20-1.5-02-1M8 has a DC resistance of 72mOhm (Typ) compared to 21mOhm (Typ) in the original part. This results in approximately 3.4 times higher resistance, leading to increased power dissipation (I²R losses) and voltage drop across the component at the same current level.

Q: Are the physical dimensions compatible? A: Both parts use through-hole mounting with vertical 4-pin packages. However, the EV20-1.5-02-1M8 is physically smaller (21.00mm x 16.00mm x 26.00mm height) compared to the ELF-22V070A (32.00mm x 23.00mm x 39.00mm height). PCB layout modifications may be required.

Q: What are the compliance advantages of the substitute? A: The EV20-1.5-02-1M8 is ROHS3 compliant and REACH unaffected, whereas the ELF-22V070A is RoHS non-compliant. For new designs or systems subject to environmental regulations, the substitute offers regulatory compliance benefits.

Q: Is the substitute part currently available? A: Yes. The EV20-1.5-02-1M8 has active product status with 721 pieces in stock, whereas the ELF-22V070A is obsolete with limited remaining inventory (1124 pieces).