ELL-4GG3R3N Equivalent & Substitute Parts

Part Overview

The ELL-4GG3R3N is a 3.3 µH shielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 1.2 A continuous current with 110mOhm DC resistance. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing production and maintenance applications. Substitute parts must maintain the specified inductance value, current rating, and shielding characteristics while meeting modern compliance requirements.

Key Parameters

Parameter	Value
Inductance	3.3 µH
Current Rating (Amps)	1.2 A
DC Resistance (DCR)	110mOhm
Current - Saturation (Isat)	1.5A
Shielding	Shielded
Mounting Type	Surface Mount
Package / Case	Nonstandard
Size / Dimension	0.150" L x 0.150" W (3.80mm x 3.80mm)
Height - Seated (Max)	0.055" (1.40mm)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the ELL-4GG3R3N are qualified based on the following electrical and mechanical parameters:

Electrical Criteria:

Inductance value: 3.3 µH (exact match required)
Current rating: minimum 1.2 A continuous
DC resistance: within acceptable operating limits
Saturation current: minimum 1.5 A
Shielding: shielded construction required

Mechanical Criteria:

Mounting type: Surface Mount
Package classification: Nonstandard
Physical dimensions: compatible with 3.80mm x 3.80mm footprint
Height constraint: maximum 1.80mm seated height

Compliance Criteria:

RoHS3 compliance required
MSL rating: 1 (Unlimited)

The substitute part NRS4018T3R3MDGJ meets all electrical requirements with improved current handling (2 A rating) and lower DC resistance (66mOhm), while maintaining shielded construction and surface mount compatibility.

Parameter Comparison

Parameter	ELL-4GG3R3N (Panasonic)	NRS4018T3R3MDGJ (Taiyo Yuden)
Inductance	3.3 µH	3.3 µH
Tolerance	±30%	±20%
Current Rating (Amps)	1.2 A	2 A
Current - Saturation (Isat)	1.5A	2.3A
DC Resistance (DCR)	110mOhm	66mOhm Max
Shielding	Shielded	Shielded
Type	Wirewound	Drum Core, Wirewound
Mounting Type	Surface Mount	Surface Mount
Size / Dimension	0.150" L x 0.150" W (3.80mm x 3.80mm)	0.157" L x 0.157" W (4.00mm x 4.00mm)
Height - Seated (Max)	0.055" (1.40mm)	0.071" (1.80mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Not For New Designs
Operating Temperature	Not specified	-25°C ~ 120°C
Frequency - Self Resonant	Not specified	45MHz

Engineering Selection Recommendations

The NRS4018T3R3MDGJ from Taiyo Yuden qualifies as a functional substitute for the obsolete ELL-4GG3R3N based on matching inductance, shielding requirements, and surface mount configuration. Both components maintain ROHS3 compliance and MSL 1 rating.

The substitute part provides electrical advantages including higher current rating (2 A vs. 1.2 A), lower DC resistance (66mOhm vs. 110mOhm), and tighter inductance tolerance (±20% vs. ±30%). Physical dimensions show minor variation: the substitute measures 4.00mm x 4.00mm with 1.80mm maximum height compared to the original 3.80mm x 3.80mm with 1.40mm height. This dimensional difference must be evaluated against specific PCB layout constraints.

The substitute part carries "Not For New Designs" status, indicating limited long-term availability. For applications requiring extended production support, further alternatives from the provided substitute list should be evaluated.

Frequently Asked Questions (FAQ)

Q: Can the NRS4018T3R3MDGJ directly replace the ELL-4GG3R3N without circuit modification?

A: The substitute maintains the same 3.3 µH inductance and shielded construction. However, the lower DC resistance (66mOhm vs. 110mOhm) and higher current rating (2 A vs. 1.2 A) represent improved electrical performance. Circuit operation remains valid, though thermal characteristics and power dissipation will differ. Physical dimensions require PCB layout verification due to the 0.20mm increase in length and width, and 0.40mm increase in height.

Q: What are the key differences in electrical performance?

A: The substitute provides superior current handling capacity and reduced resistive losses. The saturation current increases from 1.5 A to 2.3 A, and inductance tolerance improves from ±30% to ±20%. These characteristics make the substitute suitable for applications with higher current demands or stricter inductance specifications.

Q: Are both parts compliant with current regulatory requirements?

A: Both components are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings. The substitute includes specified operating temperature range (-25°C ~ 120°C) and self-resonant frequency (45MHz), providing additional environmental and frequency domain specifications.

Q: What packaging formats are available for the substitute part?

A: The NRS4018T3R3MDGJ is supplied in Cut Tape (CT) and Digi-Reel® packaging formats, supporting both manual and automated assembly processes.

Q: Should PCB layout be modified to accommodate the substitute part?

A: The substitute footprint measures 4.00mm x 4.00mm with 1.80mm maximum height, compared to the original 3.80mm x 3.80mm with 1.40mm height. PCB layout must accommodate these dimensional changes. Verify clearance with adjacent components and thermal management requirements before implementation.

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