ASPI-2012-100M-T Equivalent & Substitute Parts

Part Overview

The ASPI-2012-100M-T is a 10 µH shielded drum core wirewound inductor manufactured by Abracon LLC, designed for surface mount applications in compact form factors. This component is rated for 490 mA continuous current with a maximum DC resistance of 785 mOhm and operates across the temperature range of -40°C to 125°C. The part maintains Active product status and is currently in stock with 1164 units available.

Substitute parts become necessary when the primary component experiences supply constraints, extended lead times, or when design requirements permit operation within the electrical and mechanical tolerances of alternative manufacturers' offerings.

Substiute Parts

ASPI-2012-100M-T

Abracon LLCIn Stock: 1196ASPI-2012-100M-T Datasheet

Current PartRFQ

VLS2012ET-100M

TDK CorporationIn Stock: 113285VLS2012ET-100M Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ASPI-2012-100M-T is determined by the following critical parameters:

Inductance Value: Must be 10 µH with ±20% tolerance to maintain circuit functionality.

Current Rating: The substitute must support a minimum continuous current rating of 470 mA or higher. The primary part is rated for 490 mA; substitutes with ratings of 470 mA or above fall within acceptable operating margins.

DC Resistance: Maximum DCR must not exceed 834 mOhm to ensure acceptable power dissipation characteristics. The primary part specifies 785 mOhm maximum.

Shielding: Both the primary and substitute parts must be shielded to prevent electromagnetic interference in the application circuit.

Package Dimensions: Physical size must match 2.00 mm × 2.00 mm footprint with maximum seated height of 1.20 mm to ensure PCB compatibility.

Operating Temperature Range: The substitute must support at least the -40°C to 105°C range. The primary part extends to 125°C; substitutes rated to 105°C are acceptable for most applications.

Mounting Type: Surface mount configuration is required for both parts.

Compliance: RoHS3 compliance and MSL Level 1 rating are mandatory for supply chain and manufacturing compatibility.

The VLS2012ET-100M from TDK Corporation meets all substitution criteria within these defined parameters.

Parameter Comparison

Engineering Selection Recommendations

The VLS2012ET-100M qualifies as a direct substitute based on matching inductance value, tolerance, shielding configuration, package dimensions, and compliance certifications. The part carries ROHS3 compliance and MSL Level 1 rating, ensuring compatibility with standard manufacturing and supply chain processes.

The ASPI-2012-100M-T maintains Active product status, while the VLS2012ET-100M is designated as Not For New Designs. For new circuit designs, the Abracon ASPI-2012-100M-T is the preferred selection. For existing designs or applications where supply availability is constrained, the TDK VLS2012ET-100M provides functional equivalence within the specified electrical and thermal parameters.

The primary differences between these parts are the current rating (490 mA versus 470 mA), saturation current (720 mA versus 470 mA), and maximum operating temperature (125°C versus 105°C). These differences must be evaluated against specific application requirements before substitution.

Frequently Asked Questions (FAQ)

Q: Can the VLS2012ET-100M replace the ASPI-2012-100M-T in all applications?

A: The VLS2012ET-100M meets the core substitution criteria of inductance value, tolerance, shielding, and package dimensions. However, applications requiring continuous current operation above 470 mA or sustained temperatures above 105°C must retain the ASPI-2012-100M-T.

Q: What is the significance of the current rating difference between these parts?

A: The ASPI-2012-100M-T is rated for 490 mA continuous current, while the VLS2012ET-100M is rated for 470 mA. This 20 mA difference represents the maximum safe continuous current for each part. Circuit designs operating at or near the 490 mA level should use the Abracon part.

Q: Are the physical dimensions identical?

A: Yes. Both parts share identical footprint dimensions of 2.00 mm × 2.00 mm with a maximum seated height of 1.20 mm, ensuring direct PCB compatibility without layout modifications.

Q: What does "Not For New Designs" mean for the TDK part?

A: This designation indicates that TDK has transitioned the VLS2012ET-100M away from active development and new product qualification. While the part remains available in inventory, new circuit designs should prioritize the Abracon ASPI-2012-100M-T, which maintains Active status.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the ASPI-2012-100M-T and VLS2012ET-100M carry ROHS3 compliance certification and MSL Level 1 rating, meeting current environmental and manufacturing standards.

Q: What is the impact of the 49 mOhm DCR difference?

A: The VLS2012ET-100M specifies a maximum DCR of 834 mOhm compared to 785 mOhm for the ASPI-2012-100M-T. This 49 mOhm difference results in marginally higher power dissipation in the substitute part. For applications sensitive to inductor losses, thermal analysis should confirm acceptable performance.