ELC-09D3R3F Equivalent & Substitute Parts

Part Overview

The ELC-09D3R3F is a 3.3 µH unshielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 3.2 A continuous current with 15mOhm DC resistance. This component is classified as obsolete, making substitute parts necessary for new designs and ongoing production requirements. The part is mounted through-hole in a radial, vertical cylinder package and complies with ROHS3 standards.

Substiute Parts

ELC-09D3R3F

Panasonic Electronic ComponentsIn Stock: 959ELC-09D3R3F Datasheet

Current PartRFQ

RLB0912-3R3ML

Bourns Inc.In Stock: 13083RLB0912-3R3ML Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the ELC-09D3R3F is determined by the following critical parameters:

• Inductance Value: Must be 3.3 µH with ±20% tolerance
• Current Rating: Substitute must support minimum 3.2 A; higher ratings are acceptable
• DC Resistance: Substitute DCR must not exceed 15mOhm to maintain circuit performance
• Mounting Type: Through-hole configuration required
• Package Configuration: Radial, vertical cylinder format required
• Shielding: Unshielded specification must be maintained
• Compliance: ROHS3 compliance required

The RLB0912-3R3ML from Bourns Inc. meets all substitution criteria with equivalent inductance, superior current rating (4.5 A vs. 3.2 A), and compatible physical dimensions within acceptable tolerance.

Parameter Comparison

Engineering Selection Recommendations

The RLB0912-3R3ML is a direct substitute for the obsolete ELC-09D3R3F. Both components maintain ROHS3 compliance and are suitable for through-hole PCB assembly. The Bourns part offers improved specifications with higher current rating (4.5 A vs. 3.2 A) and active product status, ensuring long-term availability. The DCR difference of 3mOhm maximum is within acceptable engineering tolerance for most applications. Physical dimensions are compatible with standard PCB layouts designed for the original part.

Frequently Asked Questions (FAQ)

Q: Can the RLB0912-3R3ML replace the ELC-09D3R3F in existing designs?

A: Yes. Both parts share identical inductance values, tolerance specifications, mounting type, and package configuration. The substitute has higher current rating and marginally higher DCR, making it suitable for direct substitution in through-hole applications.

Q: What is the impact of the 3mOhm DCR difference?

A: The RLB0912-3R3ML has a maximum DCR of 18mOhm compared to the original 15mOhm. This 3mOhm difference results in minimal power dissipation increase and is acceptable for standard inductor applications. Circuit performance remains within design specifications.

Q: Are there physical mounting differences?

A: Both parts use radial, vertical cylinder packages suitable for through-hole mounting. The Bourns part is slightly smaller in diameter (8.70mm vs. 9.50mm) and taller (11.00mm vs. 8.90mm). Verify PCB layout clearance for the increased height before implementation.

Q: Do both parts meet compliance requirements?

A: Yes. Both the ELC-09D3R3F and RLB0912-3R3ML are ROHS3 compliant. The Bourns part is also REACH unaffected, providing additional regulatory assurance.

Q: Why is the original part obsolete?

A: The ELC-09D3R3F is classified as obsolete by Panasonic. The RLB0912-3R3ML maintains active product status with 13,000 units in stock, ensuring reliable supply for production and design requirements.