ELC-09D101DF Equivalent & Substitute Parts

Part Overview

The ELC-09D101DF is a 100 µH unshielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 820 mA with 200mOhm 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, voltage rating capability, and through-hole radial mounting configuration while meeting or exceeding the current handling requirements.

Substiute Parts

ELC-09D101DF

Panasonic Electronic ComponentsIn Stock: 939ELC-09D101DF Datasheet

Current PartRFQ

RL622-101K-RC

Bourns Inc.In Stock: 1173RL622-101K-RC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ELC-09D101DF is determined by the following criteria:

Primary Matching Parameters:

• Inductance value: 100 µH (exact match required)
• Tolerance: ±10% (standard tolerance band)
• Mounting type: Through Hole (mechanical compatibility)
• Package configuration: Radial, Vertical Cylinder (footprint compatibility)

Performance Parameters:

• Current rating: Minimum 820 mA (equal or greater)
• DC resistance: Maximum 200mOhm (equal or lower preferred for thermal performance)
• Shielding: Unshielded (electromagnetic environment compatibility)

Compliance Parameters:

• RoHS3 compliance (regulatory requirement)

The RL622-101K-RC from Bourns Inc. meets all primary matching parameters and exceeds performance specifications with 910 mA current rating and active product status.

Parameter Comparison

Engineering Selection Recommendations

The RL622-101K-RC is a direct functional substitute for the ELC-09D101DF based on the following engineering criteria:

Electrical Compatibility: Both components provide 100 µH inductance with ±10% tolerance. The RL622-101K-RC exceeds the current rating requirement (910 mA vs. 820 mA), providing design margin. The increased DC resistance (280mOhm vs. 200mOhm) represents a 40% increase in resistive loss and must be evaluated for thermal impact in the specific application circuit.

Mechanical Compatibility: Both components use through-hole radial mounting with vertical cylinder packaging. The RL622-101K-RC has a smaller diameter (8.50mm vs. 9.50mm) but greater height (11.00mm vs. 8.90mm). PCB layout verification is required to confirm clearance compatibility.

Regulatory Compliance: Both components are ROHS3 compliant. The RL622-101K-RC carries active product status, ensuring long-term availability and supply chain stability compared to the obsolete ELC-09D101DF.

Frequently Asked Questions (FAQ)

Q: Can the RL622-101K-RC directly replace the ELC-09D101DF without circuit modification?

A: The RL622-101K-RC meets all electrical specifications for inductance, tolerance, and current rating. However, the increased DC resistance (280mOhm vs. 200mOhm) will increase resistive losses. Circuit thermal analysis is required to confirm acceptable performance. Mechanical verification of PCB footprint clearance is also necessary due to dimensional differences.

Q: What is the impact of the higher DC resistance in the RL622-101K-RC?

A: The 80mOhm increase in DC resistance will generate additional heat dissipation proportional to the square of the current flowing through the inductor. For a 820 mA load, this represents approximately 0.054 watts additional loss compared to the original part. Thermal design review is required for applications with tight thermal budgets.

Q: Are there any compliance or certification differences between these parts?

A: Both components are ROHS3 compliant. The RL622-101K-RC is an active product with ongoing manufacturer support, while the ELC-09D101DF is obsolete. For new designs or long-term production, the RL622-101K-RC provides superior supply chain assurance.

Q: Will the dimensional differences affect PCB layout?

A: The RL622-101K-RC has a smaller diameter (8.50mm vs. 9.50mm) but greater height (11.00mm vs. 8.90mm). Verify that the PCB footprint and surrounding component placement accommodate the taller profile. The smaller diameter may provide additional routing space in congested layouts.

Q: What parameters must remain constant for substitution eligibility?

A: The inductance value (100 µH), tolerance band (±10%), mounting type (through-hole), and package configuration (radial, vertical cylinder) are non-negotiable for direct substitution. Current rating and DC resistance may be exceeded without functional impact, provided thermal and electrical design margins are maintained.