ELF-15N004A Equivalent & Substitute Parts

Part Overview

The ELF-15N004A is a 2-line common mode choke (CMC) manufactured by Panasonic Electronic Components, designed for through-hole mounting applications requiring 400mA current handling capability. This component features a typical DC resistance of 1.966Ohm and is housed in a vertical 4-pin package with dimensions of 15.00mm × 22.70mm × 22.50mm (height).

The ELF-15N004A is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this common mode choke.

Substiute Parts

ELF-15N004A

Panasonic Electronic ComponentsIn Stock: 924ELF-15N004A Datasheet

Current PartRFQ

B82732R2401B030

EPCOS - TDK ElectronicsIn Stock: 857B82732R2401B030 Datasheet

SimilarRFQ

SS11VL-04350

KEMETIn Stock: 866SS11VL-04350 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ELF-15N004A must satisfy the following core electrical and mechanical parameters:

• Number of Lines: 2 (mandatory match)
• Current Rating (Max): 400mA (mandatory match)
• Mounting Type: Through Hole (mandatory match)
• Package / Case: Vertical, 4 PC Pin (mandatory match)
• DC Resistance (DCR): Comparable range (1.966Ohm baseline; substitutes within 2.6Ohm acceptable)

The two identified substitute parts meet these criteria while offering active product status and improved compliance profiles. Both alternatives maintain electrical compatibility through matched line count, current rating, and mounting configuration, with DC resistance values within acceptable engineering tolerance for common mode choke applications.

Parameter Comparison

Engineering Selection Recommendations

B82732R2401B030 (EPCOS - TDK Electronics): This substitute offers active product status with ROHS3 compliance, ENEC/UR/VDE approvals, and specified AC voltage rating of 250V. The DC resistance of 3Ohm represents a 52% increase over the original part; this variance requires circuit-level evaluation to confirm acceptable performance in the target application. Operating temperature range of -40°C to 125°C provides extended thermal coverage. Packaging in tray format supports production environments. Physical dimensions (24.00mm × 16.50mm × 24.60mm) differ from the original and require PCB layout verification.

SS11VL-04350 (KEMET): This substitute provides active product status with ROHS3 compliance and 250V AC voltage rating. The DC resistance of 2.6Ohm represents a 32% increase over the original part; this is the closest resistance match among available substitutes. Operating temperature range of -25°C to 120°C covers standard industrial applications. Bulk packaging format is available. Physical dimensions (22.00mm × 14.50mm × 19.50mm) are more compact than the original, potentially offering PCB layout advantages. No REACH impact is documented.

Both substitutes maintain electrical compatibility through matched line count, current rating, and mounting configuration. Selection between them depends on specific circuit requirements regarding DC resistance tolerance, thermal operating range, and physical footprint constraints.

Frequently Asked Questions (FAQ)

Q: Why is the ELF-15N004A obsolete, and what does this mean for my design? A: Obsolete status indicates the manufacturer has discontinued production. Substitute parts must be identified to support ongoing production, maintenance, or redesign efforts. The two identified alternatives maintain core electrical specifications while offering active availability and improved compliance.

Q: Can I directly replace the ELF-15N004A with either substitute without circuit modifications? A: Both substitutes match the mandatory parameters: 2-line configuration, 400mA current rating, through-hole mounting, and vertical 4-pin package. However, DC resistance differences (1.966Ohm original vs. 2.6Ohm or 3Ohm substitutes) may affect circuit performance. Circuit-level analysis is required to confirm acceptable operation under your specific application conditions.

Q: What is the significance of the DC resistance difference between the main part and substitutes? A: DC resistance affects power dissipation and insertion loss in the common mode choke. The SS11VL-04350 (2.6Ohm) represents a 32% increase, while the B82732R2401B030 (3Ohm) represents a 52% increase over the original 1.966Ohm specification. Applications sensitive to power loss or thermal performance must evaluate whether these increases remain within acceptable limits.

Q: Are there physical footprint considerations when switching to a substitute? A: Yes. The original ELF-15N004A measures 15.00mm × 22.70mm × 22.50mm (height). The B82732R2401B030 measures 24.00mm × 16.50mm × 24.60mm, and the SS11VL-04350 measures 22.00mm × 14.50mm × 19.50mm. PCB layout verification is necessary to confirm component fit within your design constraints.

Q: What compliance advantages do the substitutes offer? A: Both substitutes are ROHS3 compliant, whereas the original ELF-15N004A is RoHS non-compliant. The B82732R2401B030 carries ENEC, UR, and VDE approvals. Both substitutes specify 250V AC voltage rating and defined operating temperature ranges, providing clearer compliance documentation for regulated applications.

Q: Which substitute should I choose if I need the closest electrical match? A: The SS11VL-04350 offers the closest DC resistance match at 2.6Ohm (32% above original) compared to the B82732R2401B030 at 3Ohm (52% above original). If DC resistance tolerance is critical to your application, the SS11VL-04350 is the preferred selection.