ELC-09D3R9F Equivalent & Substitute Parts

Part Overview

The ELC-09D3R9F is a 3.9 µH unshielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 3.1 A continuous current with 16mOhm DC resistance. This component is classified as obsolete, making equivalent substitutes necessary for new designs and production continuity. The part is mounted through-hole in a radial, vertical cylinder package and complies with ROHS3 standards.

Substiute Parts

ELC-09D3R9F

Panasonic Electronic ComponentsIn Stock: 813ELC-09D3R9F Datasheet

Current PartRFQ

B82144B2392K000

EPCOS - TDK ElectronicsIn Stock: 1425B82144B2392K000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ELC-09D3R9F is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 3.9 µH (exact match required)
• Mounting type: Through Hole (mechanical compatibility)
• Package configuration: Radial, Vertical Cylinder (footprint compatibility)
• Shielding classification: Unshielded (electromagnetic behavior)

Secondary Compatibility Parameters:

• Current rating: Substitute must meet or exceed 3.1 A
• DC resistance: Substitute performance acceptable within application thermal constraints
• RoHS compliance: ROHS3 Compliant (regulatory requirement)

The B82144B2392K000 qualifies as a direct substitute based on matching inductance, mounting type, package configuration, and shielding classification. The substitute demonstrates superior current handling (3.35 A vs. 3.1 A) and active product status, offsetting higher DC resistance through improved saturation characteristics.

Parameter Comparison

Engineering Selection Recommendations

The B82144B2392K000 is the qualified substitute for the obsolete ELC-09D3R9F based on the following engineering factors:

Functional Equivalence: Both components provide 3.9 µH inductance with identical mounting and package configurations, ensuring direct circuit compatibility.

Regulatory Compliance: Both parts maintain ROHS3 compliance, satisfying environmental and regulatory requirements for new production.

Product Availability: The substitute is active in production with confirmed inventory (1378 Pcs), whereas the main part is obsolete. This ensures long-term supply chain viability.

Performance Considerations: The substitute offers higher current saturation (4.4 A) and improved inductance tolerance (±10% vs. ±20%), providing design margin. The increased DC resistance (75mOhm vs. 16mOhm) requires thermal evaluation in applications sensitive to resistive losses.

Physical Compatibility: While dimensional differences exist (diameter and height), both components maintain radial, vertical cylinder configuration suitable for through-hole PCB mounting. Verify PCB layout clearances before implementation.

Frequently Asked Questions (FAQ)

Q: Can the B82144B2392K000 directly replace the ELC-09D3R9F without circuit modification?

A: Yes, for circuits where the 3.1 A current requirement is met by the substitute's 3.35 A rating and where the increased DC resistance (75mOhm vs. 16mOhm) does not exceed thermal or efficiency constraints. Verify power dissipation in your specific application.

Q: What is the impact of the higher DC resistance in the substitute?

A: The B82144B2392K000 exhibits 59mOhm additional resistance. In applications carrying maximum rated current (3.1 A), this results in approximately 0.59 mW additional power dissipation compared to the original part. Evaluate thermal performance in your circuit environment.

Q: Are the physical dimensions compatible with existing PCB layouts?

A: Both parts use radial, vertical cylinder packages suitable for through-hole mounting. However, the substitute is smaller in diameter (6.50mm vs. 9.50mm) but taller (14.00mm vs. 8.90mm). Verify clearances for component height and adjacent board-level features before PCB redesign.

Q: Does the substitute meet the same compliance standards?

A: Yes, both the ELC-09D3R9F and B82144B2392K000 are ROHS3 compliant. The substitute additionally provides documented operating temperature range (-55°C ~ 125°C) and REACH compliance information.

Q: What is the significance of the inductance tolerance difference?

A: The substitute offers tighter tolerance (±10% vs. ±20%), reducing inductance variation across production batches. This improves circuit performance consistency and may eliminate the need for post-production tuning in precision applications.