VLS3012ET-100M Equivalent & Substitute Parts

Part Overview

The VLS3012ET-100M is a 10 µH shielded drum core wirewound inductor manufactured by TDK Corporation, rated for 640 mA with a maximum DC resistance of 336 mOhm. This component is classified as Not For New Designs, indicating it has been superseded in TDK's product portfolio. Finding equivalent and substitute parts is necessary for applications requiring continued supply, design flexibility, or performance optimization within the specified electrical and mechanical parameters.

Key Parameters

Parameter	Value
Inductance	10 µH
Current Rating	640 mA
DC Resistance (DCR)	336 mOhm Max
Tolerance	±20%
Shielding	Shielded
Core Material	Ferrite
Mounting Type	Surface Mount
Package Size	3.00mm x 3.00mm x 1.20mm
Operating Temperature	-40°C ~ 105°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the VLS3012ET-100M is determined by the following criteria:

Primary Electrical Parameters:

Inductance value: 10 µH (exact match required)
Current rating: Must meet or exceed 640 mA
DC resistance: Must not exceed 336 mOhm Max
Shielding: Must be shielded
Core material: Ferrite

Mechanical Parameters:

Mounting type: Surface Mount
Package footprint: 3.00mm x 3.00mm (compatible with original placement)
Height: 1.20mm maximum seated height

Compliance Requirements:

RoHS3 compliance mandatory
Moisture Sensitivity Level: 1 (Unlimited)

Substitute parts are grouped based on their ability to satisfy these constraints while maintaining functional equivalence in the target application.

Parameter Comparison

Parameter	VLS3012ET-100M (Main)	VLS3012CX-100M-1	BWVF00303012100M00	BWVF00303012100T00	NRH3012T100MNV	SRU2016-100Y
Manufacturer	TDK	TDK	Pulse Electronics	Pulse Electronics	Taiyo Yuden	Bourns Inc.
Inductance	10 µH	10 µH	10 µH	10 µH	10 µH	10 µH
Current Rating	640 mA	1.25 A	1 A	900 mA	720 mA	870 mA
DC Resistance (DCR)	336 mOhm Max	324 mOhm Max	420 mOhm	420 mOhm	324 mOhm Max	430 mOhm Max
Tolerance	±20%	±20%	±20%	±30%	±20%	±30%
Shielding	Shielded	Shielded	Shielded	Shielded	Shielded	Shielded
Core Material	Ferrite	Ferrite	Ferrite	Ferrite	Ferrite	Ferrite
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	-55°C ~ 125°C	-55°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Package Size	3.00mm x 3.00mm	3.00mm x 3.00mm	3.00mm x 3.00mm	3.00mm x 3.00mm	3.00mm x 3.00mm	2.80mm x 2.80mm
Height - Seated (Max)	1.20mm	1.20mm	1.20mm	1.20mm	1.20mm	1.80mm
Product Status	Not For New Designs	Active	Active	Active	Not For New Designs	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

VLS3012CX-100M-1 (TDK): This part is the direct TDK equivalent with Active product status. It exceeds the current rating requirement (1.25 A vs. 640 mA) and maintains superior DC resistance (324 mOhm vs. 336 mOhm). Identical operating temperature range and package dimensions ensure direct compatibility. Recommended for applications requiring TDK supply continuity.

BWVF00303012100M00 (Pulse Electronics): Meets all electrical requirements with 1 A current rating and 420 mOhm DC resistance. Extended operating temperature range (-55°C ~ 125°C) provides thermal margin. Active product status ensures long-term availability. Suitable for applications with broader temperature requirements.

BWVF00303012100T00 (Pulse Electronics): Provides 900 mA current rating with identical DC resistance (420 mOhm). Active product status and extended temperature range (-55°C ~ 125°C) are advantageous. Height of 1.20mm maintains PCB compatibility. Tolerance of ±30% should be evaluated against circuit requirements.

NRH3012T100MNV (Taiyo Yuden): Rated for 720 mA with superior DC resistance (324 mOhm Max). AEC-Q200 rating provides automotive-grade qualification. Not For New Designs status limits long-term supply viability. Suitable for existing designs requiring automotive compliance.

SRU2016-100Y (Bourns Inc.): Rated for 870 mA with 430 mOhm DC resistance. Active product status ensures availability. Package footprint is 2.80mm x 2.80mm with 1.80mm height, requiring PCB layout verification before substitution. Extended operating temperature range (-40°C ~ 125°C) is beneficial.

Frequently Asked Questions (FAQ)

Q: Can VLS3012CX-100M-1 directly replace VLS3012ET-100M without PCB modifications?

A: Yes. Both parts share identical package dimensions (3.00mm x 3.00mm x 1.20mm), inductance value (10 µH), and operating temperature range (-40°C ~ 105°C). The VLS3012CX-100M-1 exceeds electrical specifications with higher current rating and lower DC resistance.

Q: What is the impact of higher DC resistance in substitute parts?

A: DC resistance directly affects power dissipation and thermal performance. The VLS3012ET-100M specifies 336 mOhm maximum. Substitutes with higher DCR (BWVF series at 420 mOhm, SRU2016-100Y at 430 mOhm) will generate proportionally more heat. Circuit thermal analysis is required if DCR increase exceeds design margins.

Q: Are Pulse Electronics BWVF parts suitable for the same applications?

A: BWVF00303012100M00 and BWVF00303012100T00 meet or exceed all electrical parameters and maintain identical package footprints. Extended operating temperature range (-55°C ~ 125°C) provides additional thermal margin. Both are Active products with confirmed long-term availability.

Q: Why does SRU2016-100Y have different package dimensions?

A: SRU2016-100Y uses a 2.80mm x 2.80mm footprint with 1.80mm height, compared to the 3.00mm x 3.00mm x 1.20mm original. This requires PCB layout verification to confirm clearance compatibility and thermal performance in the target application.

Q: Which substitute offers the best long-term supply assurance?

A: VLS3012CX-100M-1, BWVF00303012100M00, BWVF00303012100T00, and SRU2016-100Y all carry Active product status. NRH3012T100MNV is Not For New Designs, limiting future availability. For new designs, prioritize Active-status parts.

Q: Is tolerance variation significant between substitutes?

A: The main part and most substitutes specify ±20% tolerance. BWVF00303012100T00 and SRU2016-100Y specify ±30%. For applications with tight inductance requirements, ±20% tolerance parts are preferred. Circuit performance impact should be evaluated based on application sensitivity.

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