ELC-09D392F Equivalent & Substitute Parts

Part Overview

The ELC-09D392F is a 3.9 mH unshielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 130 mA maximum current with 8 Ohm DC resistance. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity. Substitute parts must maintain the same inductance value, tolerance, and mounting configuration while accommodating minor variations in current rating and DC resistance within acceptable design margins.

Substiute Parts

ELC-09D392F

Panasonic Electronic ComponentsIn Stock: 870ELC-09D392F Datasheet

Current PartRFQ

AIUR-10-392K

Abracon LLCIn Stock: 860AIUR-10-392K Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ELC-09D392F is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 3.9 mH (fixed requirement)
• Inductance tolerance: ±10% (fixed requirement)
• Mounting type: Through Hole (fixed requirement)
• Package configuration: Radial, Vertical Cylinder (fixed requirement)
• Shielding type: Unshielded (fixed requirement)

Secondary Tolerance Parameters:

• Current rating: Substitute must equal or exceed 130 mA
• DC resistance: Substitute may vary from 8 Ohm, provided circuit design accommodates the difference
• RoHS compliance: ROHS3 Compliant (required for regulatory alignment)

The AIUR-10-392K from Abracon LLC satisfies all primary matching criteria and exceeds secondary requirements with a 140 mA current rating. The increased DC resistance (13 Ohm maximum versus 8 Ohm) represents a 62.5% increase and must be evaluated within the specific circuit application to ensure acceptable power dissipation and voltage drop characteristics.

Parameter Comparison

Engineering Selection Recommendations

The AIUR-10-392K is a qualified substitute for the ELC-09D392F based on the following engineering criteria:

Compliance & Availability: The AIUR-10-392K maintains ROHS3 compliance and active product status, ensuring long-term supply chain viability and regulatory alignment. The ELC-09D392F obsolete status necessitates transition to an active alternative.

Electrical Equivalence: Both components deliver 3.9 mH inductance at ±10% tolerance with identical unshielded, through-hole radial configurations. The AIUR-10-392K current rating of 140 mA exceeds the original 130 mA specification, providing design margin.

DC Resistance Consideration: The AIUR-10-392K DC resistance maximum of 13 Ohm represents a 62.5% increase over the original 8 Ohm specification. Circuit designs must accommodate this increased resistance in applications where power dissipation, voltage drop, or thermal performance are critical parameters.

Physical Footprint: The AIUR-10-392K occupies a smaller physical envelope (0.315" diameter and height versus 0.374" and 0.350" respectively), which may provide PCB layout advantages in space-constrained applications.

Frequently Asked Questions (FAQ)

Q: Can the AIUR-10-392K directly replace the ELC-09D392F without circuit modification?

A: Direct replacement is possible if the circuit design accommodates the 13 Ohm maximum DC resistance. Applications sensitive to resistive losses, voltage drop, or thermal dissipation must evaluate the 62.5% resistance increase. The identical inductance value and tolerance ensure magnetic performance equivalence.

Q: What is the impact of the increased DC resistance on circuit performance?

A: Increased DC resistance results in higher power dissipation (P = I²R) and greater voltage drop across the inductor. For a 130 mA current, the original component dissipates 0.135 W (8 Ohm × 0.130² A), while the substitute dissipates up to 0.220 W (13 Ohm × 0.130² A). Circuit thermal design and voltage budget must accommodate this difference.

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

A: The AIUR-10-392K is smaller in both diameter and height than the ELC-09D392F. Existing through-hole footprints designed for the original component will accommodate the substitute. However, verify that the reduced size does not create unintended air gaps or mechanical stress in the PCB assembly.

Q: What certifications and compliance standards apply to both components?

A: Both the ELC-09D392F and AIUR-10-392K are ROHS3 compliant and carry Moisture Sensitivity Level 1 (unlimited). The AIUR-10-392K additionally carries REACH Unaffected status. Both components are classified under ECCN EAR99 for export control purposes.

Q: Why is the ELC-09D392F obsolete, and what is the recommended transition timeline?

A: Panasonic has discontinued the ELC-09D392F series. Existing inventory of 817 pieces is available, but no future production is planned. Design transition to the AIUR-10-392K should be prioritized to ensure supply continuity beyond current stock depletion.