ELF-24V020A Common Mode Choke Equivalent & Substitute Parts

Part Overview

The ELF-24V020A 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, necessitating identification of active equivalent parts for new designs and ongoing production support. The original part features a DC resistance of 161mOhm (typical) and vertical 4-pin configuration suitable for power line filtering applications.

Substiute Parts

ELF-24V020A

Panasonic Electronic ComponentsIn Stock: 960ELF-24V020A Datasheet

Current PartRFQ

B82725J2202N020

EPCOS - TDK ElectronicsIn Stock: 921B82725J2202N020 Datasheet

SimilarRFQ

B82734R2232B030

EPCOS - TDK ElectronicsIn Stock: 2058B82734R2232B030 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the ELF-24V020A is determined by the following critical parameters:

• Number of Lines: Must remain 2-line configuration
• Current Rating: Substitute must support minimum 2A; higher ratings are acceptable
• Mounting Type: Through-hole vertical orientation required
• Package Configuration: Vertical 4-pin configuration mandatory
• DC Resistance: Lower or equivalent DCR values are acceptable for thermal performance

Both identified substitute parts meet these core requirements while offering active product status and improved compliance profiles. The B82734R2232B030 provides higher current capacity (2.3A) with lower DCR (185mOhm), while the B82725J2202N020 maintains 2A rating with specified inductance characteristics.

Parameter Comparison

Engineering Selection Recommendations

B82734R2232B030 is the primary substitute option. This part exceeds the original current specification (2.3A vs. 2A), provides lower DC resistance (185mOhm vs. 161mOhm), and carries active product status with ROHS3 compliance and international safety certifications (ENEC, UR, VDE). The compact footprint (32.50mm L x 21.00mm W x 31.00mm H) maintains through-hole compatibility while offering superior thermal characteristics.

B82725J2202N020 serves as an alternative substitute where inductance specification at 10 kHz (18 mH) is a design requirement. This part maintains the original 2A current rating and meets all mounting and configuration criteria. Higher DC resistance (270mOhm) should be evaluated against thermal budget constraints. ROHS3 compliance and equivalent safety certifications apply.

Both substitutes provide active product availability, regulatory compliance improvements, and documented thermal operating ranges absent from the original specification.

Frequently Asked Questions (FAQ)

Q: Can B82734R2232B030 directly replace ELF-24V020A in existing designs?

A: Yes. The B82734R2232B030 maintains the critical 2-line, 2A minimum, through-hole vertical 4-pin configuration. The higher current rating (2.3A) and lower DCR (185mOhm) provide performance margin. Physical dimensions differ slightly; verify PCB layout clearance before implementation.

Q: What is the primary difference between the two substitute options?

A: B82734R2232B030 offers higher current capacity (2.3A) and lower resistance (185mOhm). B82725J2202N020 specifies inductance at 10 kHz (18 mH) and maintains the original 2A rating. Selection depends on whether inductance value is a circuit requirement.

Q: Are both substitutes RoHS compliant?

A: Yes. Both B82734R2232B030 and B82725J2202N020 carry ROHS3 compliance status, addressing the non-compliance status of the obsolete ELF-24V020A.

Q: Do the substitute parts have safety certifications?

A: Both substitutes carry ENEC, UR, and VDE approvals with 250V AC voltage rating and -40°C to 125°C operating temperature range, providing documented regulatory qualification.

Q: Are there packaging differences between the main part and substitutes?

A: The original ELF-24V020A uses standard packaging. Both substitutes ship in tray packaging. Verify tape-and-reel availability if automated assembly is required.

Q: What is the inventory status of substitute parts?

A: B82734R2232B030 has 2000 pieces in stock. B82725J2202N020 has 894 pieces in stock, providing supply continuity for production requirements.