ELC-3FN2R2N Equivalent & Substitute Parts

Part Overview

The ELC-3FN2R2N is a 2.2 µH unshielded surface mount inductor manufactured by Panasonic Electronic Components, rated for 1 A continuous current with 120mOhm DC resistance. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The part operates at 100 kHz test frequency and is housed in a nonstandard 3.20mm x 3.20mm package with 1.20mm maximum seated height.

Substiute Parts

ELC-3FN2R2N

Panasonic Electronic ComponentsIn Stock: 989ELC-3FN2R2N Datasheet

Current PartRFQ

SDR0302-2R2ML

Bourns Inc.In Stock: 3215SDR0302-2R2ML Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the ELC-3FN2R2N is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 2.2 µH (exact match required)
• Mounting type: Surface Mount (exact match required)
• Shielding configuration: Unshielded (exact match required)

Secondary Compatibility Parameters:

• Current rating: Substitute must meet or exceed 1 A
• DC resistance: Substitute should not significantly exceed 120mOhm to maintain circuit performance
• Package footprint: Substitute must fit within or match the 3.20mm x 3.20mm x 1.20mm envelope
• RoHS compliance: Substitute must maintain RoHS compliance status

The SDR0302-2R2ML from Bourns Inc. satisfies all primary matching criteria and provides improved electrical performance characteristics while maintaining compliance requirements.

Parameter Comparison

Engineering Selection Recommendations

The SDR0302-2R2ML is a direct functional substitute for the obsolete ELC-3FN2R2N based on the following engineering criteria:

Electrical Compatibility: Both components provide 2.2 µH inductance with unshielded configuration. The Bourns substitute delivers superior electrical performance with lower DC resistance (90mOhm vs. 120mOhm) and higher current rating (1.65 A vs. 1 A), making it suitable for the same circuit applications with improved thermal margin.

Compliance Status: Both parts maintain RoHS compliance and MSL 1 moisture sensitivity rating, ensuring equivalent reliability and handling requirements.

Physical Considerations: The SDR0302-2R2ML has a smaller lateral footprint (3.00mm x 2.80mm vs. 3.20mm x 3.20mm) but increased height (2.80mm vs. 1.20mm). PCB layout verification is required to confirm vertical clearance compatibility with the application.

Product Status: The Bourns SDR0302-2R2ML is active production status with established supply chain availability, providing long-term procurement security compared to the obsolete Panasonic part.

Frequently Asked Questions (FAQ)

Q: Can the SDR0302-2R2ML be used as a direct replacement for the ELC-3FN2R2N?

A: Yes, the SDR0302-2R2ML meets all primary electrical requirements: 2.2 µH inductance, 1 A minimum current rating, unshielded configuration, and surface mount package. Physical clearance verification is required due to increased component height.

Q: What are the key differences between these two inductors?

A: The primary differences are: (1) DC resistance is lower in the Bourns part (90mOhm vs. 120mOhm), reducing power dissipation; (2) current rating is higher (1.65 A vs. 1 A), providing greater thermal headroom; (3) inductance tolerance is tighter (±20% vs. ±30%); (4) component height is greater (2.80mm vs. 1.20mm), requiring PCB clearance verification.

Q: Are there any compliance or certification concerns with substitution?

A: No. Both components are RoHS compliant and carry MSL 1 moisture sensitivity rating. The Bourns part meets ROHS3 compliance, which is equivalent to or exceeds the Panasonic RoHS compliance status.

Q: Will the substitute part fit in the same PCB footprint?

A: The lateral footprint of the SDR0302-2R2ML (3.00mm x 2.80mm) is smaller than the ELC-3FN2R2N (3.20mm x 3.20mm), ensuring compatibility with existing pad layouts. However, the increased height (2.80mm vs. 1.20mm) requires verification of vertical clearance in the application.

Q: How do the electrical performance characteristics compare?

A: The SDR0302-2R2ML provides improved performance: lower DC resistance reduces I²R losses, higher current rating provides thermal margin, and tighter inductance tolerance improves circuit consistency. These characteristics make it suitable for applications requiring the same 2.2 µH inductance with enhanced reliability.