VLS2012ET-4R7M-CA Equivalent & Substitute Parts

Part Overview

The VLS2012ET-4R7M-CA is a 4.7 µH shielded drum core wirewound inductor manufactured by TDK Corporation, designed for surface mount applications in the 2012 package size. This component delivers 840 mA current rating with 336 mOhm maximum DC resistance and operates across -40°C to 105°C. The part is classified as Not For New Designs, making identification of active equivalent alternatives essential for ongoing production and new circuit implementations.

Key Parameters

Parameter	Value
Inductance	4.7 µH
Tolerance	±20%
Current Rating	840 mA
DC Resistance (Max)	336 mOhm
Core Type	Ferrite, Shielded Drum Core
Mounting Type	Surface Mount
Package Size	2.00mm x 2.00mm x 1.20mm
Operating Temperature Range	-40°C to 105°C
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the VLS2012ET-4R7M-CA is determined by the following critical parameters:

Inductance Value: Must be 4.7 µH with ±20% tolerance
Core Material & Shielding: Ferrite material with shielded construction required
Current Rating: Minimum 840 mA to support original circuit requirements
DC Resistance: Maximum 336 mOhm to maintain electrical performance
Mounting Type: Surface mount configuration mandatory
Package Compatibility: Physical dimensions must accommodate 2.00mm x 2.00mm footprint or smaller equivalent

Two substitute parts meet these criteria:

VLS6045EX-4R7M-H (TDK Corporation) – Active status alternative with enhanced current rating and lower DC resistance, though larger package footprint
ASPI-2012-4R7M-T (Abracon LLC) – Active status alternative with identical package dimensions and comparable electrical characteristics

Parameter Comparison

Parameter	VLS2012ET-4R7M-CA (Main)	VLS6045EX-4R7M-H	ASPI-2012-4R7M-T
Manufacturer	TDK Corporation	TDK Corporation	Abracon LLC
Inductance	4.7 µH	4.7 µH	4.7 µH
Tolerance	±20%	±20%	±20%
Current Rating (Amps)	840 mA	4.2 A	820 mA
Current - Saturation	700 mA	5.8 A	970 mA
DC Resistance (Max)	336 mOhm	35.1 mOhm	294 mOhm
Core Type	Ferrite, Shielded Drum Core	Ferrite, Shielded Drum Core	Ferrite, Shielded Drum Core
Shielding	Shielded	Shielded	Shielded
Operating Temperature	-40°C to 105°C	-40°C to 125°C	-40°C to 125°C
Package Size (L x W)	2.00mm x 2.00mm	6.30mm x 6.00mm	2.00mm x 2.00mm
Height (Max)	1.20mm	4.50mm	1.20mm
Product Status	Not For New Designs	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Ratings	-	AEC-Q200	-

Engineering Selection Recommendations

ASPI-2012-4R7M-T is the primary substitute for direct replacement applications. This Abracon LLC component maintains identical package dimensions (2.00mm x 2.00mm x 1.20mm), matching the original PCB footprint without layout modifications. Current rating of 820 mA and DC resistance of 294 mOhm are within acceptable operating margins of the original specification. The part carries Active product status and ROHS3 compliance, supporting both legacy production and new design implementations. Operating temperature range extends to 125°C, providing improved thermal margin.

VLS6045EX-4R7M-H serves as an alternative for applications where PCB space permits larger component placement. This TDK Corporation part offers superior electrical performance with 4.2 A current rating and 35.1 mOhm DC resistance, substantially reducing thermal dissipation. AEC-Q200 automotive qualification provides additional reliability assurance for demanding environments. The 6.30mm x 6.00mm footprint requires PCB redesign and is suitable only when space constraints are not limiting factors.

Both substitutes maintain ferrite shielded drum core construction, ±20% inductance tolerance, and ROHS3 compliance, ensuring functional equivalence within the specified parameter envelope.

Frequently Asked Questions (FAQ)

Q: Can ASPI-2012-4R7M-T replace VLS2012ET-4R7M-CA without PCB modification?

A: Yes. Both components share identical package dimensions of 2.00mm x 2.00mm x 1.20mm, enabling direct footprint compatibility without layout changes.

Q: What is the primary difference between the two substitute options?

A: Package size and electrical performance. ASPI-2012-4R7M-T maintains the original 2.00mm x 2.00mm footprint, while VLS6045EX-4R7M-H increases to 6.30mm x 6.00mm but delivers superior current handling (4.2 A vs. 840 mA) and lower DC resistance (35.1 mOhm vs. 336 mOhm).

Q: Are both substitutes suitable for new design implementations?

A: Yes. Both ASPI-2012-4R7M-T and VLS6045EX-4R7M-H carry Active product status, making them appropriate for new circuit development. The original VLS2012ET-4R7M-CA is classified as Not For New Designs.

Q: What is the impact of DC resistance differences on circuit performance?

A: Lower DC resistance reduces resistive losses and heat generation. ASPI-2012-4R7M-T (294 mOhm) and VLS6045EX-4R7M-H (35.1 mOhm) both improve upon the original 336 mOhm specification, with VLS6045EX-4R7M-H providing the most significant reduction.

Q: Do the substitutes maintain the same operating temperature range?

A: Both substitutes extend the upper operating limit to 125°C compared to the original 105°C maximum, providing improved thermal headroom across the -40°C to 125°C range.

Q: Is AEC-Q200 qualification required for my application?

A: AEC-Q200 certification is specific to automotive applications. VLS6045EX-4R7M-H includes this qualification; ASPI-2012-4R7M-T does not. Select based on your end-use requirements.

Q: Can current rating be exceeded in either substitute?

A: No. Current ratings represent maximum continuous operating specifications. VLS6045EX-4R7M-H (4.2 A) and ASPI-2012-4R7M-T (820 mA) must not be exceeded to prevent saturation and component damage.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message