VLF3010AT-100MR49 Equivalent & Substitute Parts

Part Overview

The VLF3010AT-100MR49 is a 10 µH shielded drum core wirewound inductor manufactured by TDK Corporation, rated for 490 mA maximum current with 670 mOhm DC resistance. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part operates across the temperature range of -40°C to 105°C and is suitable for surface mount applications in compact form factors.

Key Parameters

Parameter	Value
Inductance	10 µH
Inductance Tolerance	±20%
Current Rating (Amps)	490 mA
DC Resistance (DCR)	670 mOhm Max
Shielding	Shielded
Core Material	Ferrite
Operating Temperature	-40°C ~ 105°C
Mounting Type	Surface Mount
Package Type	Nonstandard
Size	0.110" L x 0.102" W (2.80mm x 2.60mm)
Height - Seated (Max)	0.039" (1.00mm)

Substitute Part Grouping Explanation

Substitution eligibility for the VLF3010AT-100MR49 is determined by the following critical parameters:

Inductance Value: Must be 10 µH with ±20% tolerance
Shielding: Must be shielded to maintain electromagnetic isolation
Mounting Type: Must be surface mount compatible
Current Rating: Must support minimum 490 mA operation
DC Resistance: Must not exceed 670 mOhm to maintain circuit performance
Operating Temperature Range: Must encompass or exceed -40°C ~ 105°C
Core Type: Ferrite or metal core acceptable based on electrical performance equivalence

Two substitute parts meet these criteria: the VLS3012HBX-100M (TDK Corporation, active status) and the ASPI-2410-100M-T2 (Abracon LLC, active status). Both maintain the 10 µH inductance specification, shielded construction, and surface mount configuration while offering improved current handling or alternative core materials.

Parameter Comparison

Parameter	VLF3010AT-100MR49 (Main)	VLS3012HBX-100M (Substitute)	ASPI-2410-100M-T2 (Substitute)
Manufacturer	TDK Corporation	TDK Corporation	Abracon LLC
Product Status	Obsolete	Active	Active
Inductance	10 µH	10 µH	10 µH
Inductance Tolerance	±20%	±20%	±20%
Current Rating (Amps)	490 mA	1.48 A	670 mA
DC Resistance (DCR)	670 mOhm Max	415 mOhm Max	584 mOhm Max
Shielding	Shielded	Shielded	Shielded
Core Material	Ferrite	Metal	Ferrite
Operating Temperature	-40°C ~ 105°C	-40°C ~ 105°C	-25°C ~ 120°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Size / Dimension	0.110" L x 0.102" W (2.80mm x 2.60mm)	0.118" L x 0.118" W (3.00mm x 3.00mm)	0.098" L x 0.079" W (2.50mm x 2.00mm)
Height - Seated (Max)	0.039" (1.00mm)	0.047" (1.20mm)	0.039" (1.00mm)
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant
Inductance Frequency - Test	100 kHz	1 MHz	100 kHz

Engineering Selection Recommendations

VLS3012HBX-100M (TDK Corporation): This substitute offers active product status with ROHS3 compliance. The part provides superior current handling at 1.48 A and reduced DC resistance of 415 mOhm, delivering improved thermal performance. The metal core construction and 1 MHz test frequency support higher-frequency applications. Physical dimensions increase slightly (3.00mm x 3.00mm), requiring PCB layout verification. This option is suitable for designs requiring enhanced current capacity and long-term component availability.

ASPI-2410-100M-T2 (Abracon LLC): This substitute maintains ferrite core construction identical to the main part, ensuring consistent electromagnetic behavior. Current rating of 670 mA exceeds the original 490 mA specification, while DC resistance of 584 mOhm remains within acceptable limits. The extended operating temperature range (-25°C ~ 120°C) provides additional thermal margin. Physical dimensions are the smallest among all options (2.50mm x 2.00mm), making this part ideal for space-constrained applications. ROHS3 compliance and active product status ensure supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the VLS3012HBX-100M be used as a direct replacement for the VLF3010AT-100MR49?

A: The VLS3012HBX-100M is electrically equivalent in inductance and shielding but has different physical dimensions (3.00mm x 3.00mm versus 2.80mm x 2.60mm) and increased height (1.20mm versus 1.00mm). PCB layout must be verified for clearance compatibility. The metal core and improved current rating make it suitable for most applications requiring the original part.

Q: What are the key differences between the two substitute parts?

A: The VLS3012HBX-100M offers higher current capacity (1.48 A) and lower DC resistance (415 mOhm) with a metal core, suitable for high-current applications. The ASPI-2410-100M-T2 maintains ferrite core construction with moderate current increase (670 mA) and the smallest physical footprint (2.50mm x 2.00mm), ideal for space-constrained designs.

Q: Are both substitute parts RoHS compliant?

A: Yes, both VLS3012HBX-100M and ASPI-2410-100M-T2 are ROHS3 compliant, meeting current environmental regulations.

Q: Which substitute part has the closest physical dimensions to the original?

A: The ASPI-2410-100M-T2 has the smallest footprint (2.50mm x 2.00mm) and matches the original height of 1.00mm, making it the most space-efficient option. The VLS3012HBX-100M is slightly larger in all dimensions.

Q: Can I use either substitute in existing designs without circuit modifications?

A: Both substitutes maintain the 10 µH inductance and ±20% tolerance, allowing direct electrical substitution. However, physical layout verification is required due to dimensional differences. The improved current ratings and reduced DC resistance of the substitutes may enhance circuit performance without requiring design changes.

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