ELL-4LG2R2NA Equivalent & Substitute Parts

Part Overview

The ELL-4LG2R2NA is a 2.2 µH shielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 1.7 A with 55mOhm DC resistance. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The part operates at 100 kHz inductance test frequency and is housed in a nonstandard 3.80mm x 3.80mm surface mount package with a maximum seated height of 1.80mm.

Key Parameters

Parameter	Value
Inductance	2.2 µH
Current Rating	1.7 A
DC Resistance (DCR)	55mOhm
Inductance Tolerance	±30%
Shielding Type	Shielded
Core Type	Wirewound
Mounting Type	Surface Mount
Package Size	3.80mm x 3.80mm
Maximum Height	1.80mm
Inductance Test Frequency	100 kHz
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the ELL-4LG2R2NA are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

Inductance value: 2.2 µH (±30% tolerance band)
Inductance test frequency: 100 kHz
Shielding classification: Shielded or Semi-Shielded
Core material: Ferrite-based wirewound construction
Mounting type: Surface Mount
RoHS3 compliance requirement
Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variation Parameters:

Current rating: Minimum 1.7 A (substitutes may exceed this rating)
DC resistance: Maximum 55mOhm (substitutes may be lower)
Package dimensions: Nonstandard packages within 4.20mm x 4.20mm footprint maximum
Maximum seated height: Up to 3.20mm (original is 1.80mm)
Inductance tolerance: ±20% or ±30%

All substitute parts maintain the same inductance value, test frequency, and shielding approach while offering equal or superior current handling and lower DC resistance characteristics.

Parameter Comparison

Parameter	ELL-4LG2R2NA (Panasonic)	CDRH40D28NP-2R2NC (Sumida)	NRS4018T2R2MDGJ (Taiyo Yuden)	SRN4018-2R2M (Bourns)	VLCF4024T-2R2N1R7-2 (TDK)	VLCF4028T-2R2N1R9-2 (TDK)
Inductance	2.2 µH	2.2 µH	2.2 µH	2.2 µH	2.2 µH	2.2 µH
Inductance Tolerance	±30%	±30%	±20%	±20%	±30%	±30%
Current Rating (Amps)	1.7 A	2.1 A	2.2 A	2.9 A	1.76 A	1.94 A
Current - Saturation (Isat)	1.5 A	2.2 A	3.0 A	3.0 A	1.76 A	1.94 A
DC Resistance (DCR)	55mOhm	47mOhm Max	50.4mOhm Max	44mOhm Max	43mOhm Max	43mOhm Max
Shielding	Shielded	Shielded	Shielded	Semi-Shielded	Shielded	Shielded
Core Type	Wirewound	Drum Core, Wirewound	Drum Core, Wirewound	Drum Core, Wirewound	Drum Core, Wirewound	Drum Core, Wirewound
Core Material	Not specified	Ferrite	Ferrite	Ferrite	Ferrite	Ferrite
Inductance Test Frequency	100 kHz	100 kHz	100 kHz	100 kHz	100 kHz	100 kHz
Frequency - Self Resonant	Not specified	Not specified	60 MHz	60 MHz	Not specified	Not specified
Operating Temperature Range	Not specified	-40°C ~ 105°C	-25°C ~ 120°C	-40°C ~ 125°C	-40°C ~ 105°C	-40°C ~ 105°C
Package Size (L x W)	3.80mm x 3.80mm	4.20mm x 4.20mm	4.00mm x 4.00mm	4.00mm x 4.00mm	4.00mm x 4.00mm	4.00mm x 4.00mm
Maximum Seated Height	1.80mm	3.20mm	1.80mm	1.80mm	2.40mm	2.80mm
Product Status	Obsolete	Active	Not For New Designs	Active	Active	Active
RoHS Status	ROHS3 Compliant	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Packaging Type	Not specified	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®

Engineering Selection Recommendations

Primary Recommendation: SRN4018-2R2M (Bourns Inc.)

The SRN4018-2R2M is the preferred substitute for the obsolete ELL-4LG2R2NA. This part maintains active product status, ensuring long-term availability and supply chain stability. It delivers superior electrical performance with 2.9 A current rating and 44mOhm maximum DC resistance, both exceeding the original specification. The component is ROHS3 compliant, operates across -40°C to 125°C, and maintains identical package footprint (4.00mm x 4.00mm) and seated height (1.80mm) to the original part. The semi-shielded construction provides equivalent electromagnetic containment for most applications.

Secondary Recommendations:

VLCF4028T-2R2N1R9-2 (TDK Corporation) offers active product status with full shielding, 1.94 A current rating, and 43mOhm maximum DC resistance. This part is suitable for applications requiring maximum electromagnetic shielding and operates within -40°C to 105°C. Higher seated height (2.80mm) may require PCB layout verification.

VLCF4024T-2R2N1R7-2 (TDK Corporation) provides active status with shielded construction, 1.76 A current rating, and 43mOhm maximum DC resistance. Seated height of 2.40mm requires clearance verification. Tape & Reel packaging supports high-volume production.

CDRH40D28NP-2R2NC (Sumida America Components Inc.) delivers 2.1 A current rating and 47mOhm maximum DC resistance with active product status. Larger package footprint (4.20mm x 4.20mm) and increased seated height (3.20mm) necessitate PCB design review before implementation.

Not Recommended for New Designs:

NRS4018T2R2MDGJ (Taiyo Yuden) carries "Not For New Designs" status, limiting its suitability for ongoing production despite superior electrical specifications (2.2 A, 50.4mOhm maximum DCR).

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with higher current rating than the original ELL-4LG2R2NA?

A: Yes. All listed substitutes exceed or match the 1.7 A current rating of the original part. Higher current ratings provide design margin and do not compromise circuit function when inductance and DC resistance specifications are met.

Q: What is the difference between shielded and semi-shielded inductors?

A: Shielded inductors use complete electromagnetic containment to minimize radiated emissions and external field coupling. Semi-shielded inductors provide partial containment. The SRN4018-2R2M (semi-shielded) is suitable for most applications; fully shielded alternatives (TDK VLCF series, Sumida CDRH40D28NP) are preferred in noise-sensitive circuits.

Q: Does the package size difference affect PCB layout?

A: The original ELL-4LG2R2NA uses a 3.80mm x 3.80mm footprint. Substitutes range from 4.00mm to 4.20mm. Verify available PCB space before selection. Seated height varies from 1.80mm to 3.20mm; confirm vertical clearance for components or shielding cans above the inductor.

Q: Are all substitutes RoHS3 compliant?

A: Five of six substitutes explicitly state ROHS3 compliance. Sumida CDRH40D28NP-2R2NC does not specify RoHS status in provided data; verify compliance with the manufacturer before use in regulated applications.

Q: What is the significance of inductance tolerance (±20% vs ±30%)?

A: Tighter tolerance (±20%) provides more predictable circuit performance. The original part and most substitutes use ±30% tolerance, which is standard for wirewound inductors. Taiyo Yuden and Bourns parts offer ±20% tolerance for applications requiring tighter inductance control.

Q: Can I substitute the ELL-4LG2R2NA in existing designs without circuit modification?

A: Yes, provided the substitute meets or exceeds the original current rating and maintains DC resistance within acceptable limits. All listed parts share identical inductance (2.2 µH) and test frequency (100 kHz). Verify package footprint and height clearance on your PCB before implementation.

Q: Which substitute offers the best long-term availability?

A: SRN4018-2R2M (Bourns) and both TDK VLCF parts carry active product status with substantial inventory levels (12,260 and 21,300 units respectively), ensuring supply continuity for production programs.

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