ELL-VGG150M Equivalent & Substitute Parts

Part Overview

The ELL-VGG150M is a 15 µH shielded wirewound inductor manufactured by Panasonic Electronic Components, rated for 490 mA continuous current with 640 mOhm DC resistance. This component is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production support. The part operates at 100 kHz inductance test frequency and is housed in a nonstandard 3.00mm × 3.00mm surface mount package with 1.50mm maximum seated height.

Key Parameters

Parameter	ELL-VGG150M
Inductance	15 µH
Tolerance	±20%
Current Rating	490 mA
Saturation Current (Isat)	600 mA
DC Resistance (DCR)	640 mOhm
Shielding	Shielded
Type	Wirewound
Mounting Type	Surface Mount
Package Size	3.00mm × 3.00mm
Height (Max)	1.50mm
Product Status	Obsolete
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the ELL-VGG150M is determined by the following critical parameters:

Inductance Value: Must be 15 µH (±20% tolerance)
Current Rating: Minimum 490 mA continuous current capability
Saturation Current: Minimum 600 mA
DC Resistance: Maximum 640 mOhm to maintain thermal and efficiency characteristics
Shielding Type: Shielded or semi-shielded configurations acceptable
Package Footprint: 3.00mm × 3.00mm surface mount with maximum 1.50mm height
Mounting Type: Surface mount only
Compliance: ROHS3 compliant

Four substitute parts meet these electrical and mechanical criteria while offering improved availability and active product status.

Parameter Comparison

Parameter	ELL-VGG150M (Panasonic)	NR3015T150M (Taiyo Yuden)	SD3112-150-R (Eaton)	SD3114-150-R (Eaton)	SRN3015-150M (Bourns)
Inductance	15 µH	15 µH	15 µH	15 µH	15 µH
Tolerance	±20%	±20%	±20%	±20%	±20%
Current Rating (mA)	490	560	450	480	800
Saturation Current (mA)	600	560	440	660	680
DC Resistance (mOhm)	640	432 Max	654	650	422 Max
Shielding	Shielded	Shielded	Shielded	Shielded	Semi-Shielded
Core Type	Wirewound	Drum Core, Wirewound	Drum Core, Wirewound	Drum Core, Wirewound	Drum Core, Wirewound
Package Size (mm)	3.00 × 3.00	3.00 × 3.00	3.10 × 3.10	3.10 × 3.10	3.00 × 3.00
Height Max (mm)	1.50	1.50	1.20	1.40	1.50
Operating Temperature	Not specified	-25°C ~ 120°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Product Status	Obsolete	Not For New Designs	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: SRN3015-150M (Bourns Inc.)

The SRN3015-150M offers the highest current rating (800 mA) and lowest DC resistance (422 mOhm max), providing superior thermal performance and efficiency margins. Active product status ensures long-term availability and supply chain stability. ROHS3 compliance and unlimited moisture sensitivity level (MSL 1) match the original specification. Footprint compatibility is exact at 3.00mm × 3.00mm with 1.50mm maximum height. Extended operating temperature range (-40°C ~ 125°C) exceeds typical application requirements.

Secondary Recommendation: SD3114-150-R (Eaton - Electronics Division)

The SD3114-150-R maintains active product status with current rating of 480 mA and saturation current of 660 mA, both exceeding the original 490 mA / 600 mA specification. DC resistance of 650 mOhm is within acceptable tolerance of the original 640 mOhm. Operating temperature range of -40°C ~ 125°C provides extended thermal performance. Footprint is 3.10mm × 3.10mm with 1.40mm height, representing a minimal dimensional increase suitable for most PCB layouts.

Alternative: SD3112-150-R (Eaton - Electronics Division)

The SD3112-150-R is active and RoHS compliant but has a current rating of 450 mA, which falls below the original 490 mA specification. This part is suitable only for applications where actual current draw is confirmed below 450 mA. DC resistance of 654 mOhm is marginally higher than the original. Footprint dimensions are 3.10mm × 3.10mm with 1.20mm height, the most compact option available.

Not Recommended for New Designs: NR3015T150M (Taiyo Yuden)

Although the NR3015T150M meets electrical specifications with 560 mA current rating and 432 mOhm DC resistance, its product status is classified as "Not For New Designs," limiting its suitability for ongoing development and production.

Frequently Asked Questions (FAQ)

Q: Can the SRN3015-150M replace the ELL-VGG150M directly?

A: Yes. The SRN3015-150M meets all critical electrical parameters: 15 µH inductance, 800 mA current rating (exceeds 490 mA requirement), 680 mA saturation current (exceeds 600 mA requirement), and 422 mOhm DC resistance (lower than 640 mOhm). Footprint is identical at 3.00mm × 3.00mm with 1.50mm maximum height. Both are ROHS3 compliant with MSL 1 rating.

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

A: Shielded inductors (ELL-VGG150M, NR3015T150M, SD3112-150-R, SD3114-150-R) provide complete magnetic field containment, minimizing EMI coupling to adjacent components. Semi-shielded inductors (SRN3015-150M) offer partial field containment with slightly lower DC resistance and higher current capacity. Semi-shielded performance is acceptable in most applications where EMI margins are not critical.

Q: Are the Eaton SD3114-150-R and SD3112-150-R interchangeable?

A: Both parts share identical inductance (15 µH), tolerance (±20%), and footprint dimensions (3.10mm × 3.10mm). The primary difference is current rating: SD3114-150-R is rated for 480 mA versus SD3112-150-R at 450 mA. Selection depends on actual circuit current requirements. SD3114-150-R is preferred when current approaches or exceeds 450 mA.

Q: Why is the NR3015T150M listed as "Not For New Designs"?

A: This designation indicates the manufacturer (Taiyo Yuden) is discontinuing the product line. While electrically compatible, new designs should use active alternatives such as SRN3015-150M or SD3114-150-R to ensure long-term supply availability and manufacturing support.

Q: What is the impact of DC resistance differences between substitutes?

A: DC resistance directly affects inductor heating and power dissipation. Lower DCR reduces thermal load. The SRN3015-150M (422 mOhm) and NR3015T150M (432 mOhm) dissipate less heat than the original ELL-VGG150M (640 mOhm). The SD3114-150-R (650 mOhm) and SD3112-150-R (654 mOhm) are thermally equivalent to the original. Selection should account for thermal budget constraints in the application.

Q: Can I use the SD3112-150-R if my circuit draws 480 mA?

A: No. The SD3112-150-R is rated for 450 mA continuous current. Operating above this rating risks inductor saturation and failure. Use SD3114-150-R (480 mA rating) or SRN3015-150M (800 mA rating) for this current level.

Q: Are all substitutes compatible with the same PCB footprint?

A: The SRN3015-150M and NR3015T150M use identical 3.00mm × 3.00mm footprints. The Eaton parts (SD3112-150-R and SD3114-150-R) use 3.10mm × 3.10mm footprints, requiring PCB layout verification. Height differences (1.20mm to 1.50mm) are generally non-critical for surface mount assembly.

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