ASPI-0428S-2R7M-T Equivalent & Substitute Parts

Part Overview

The ASPI-0428S-2R7M-T is a 2.7 µH shielded drum core, wirewound inductor manufactured by Abracon LLC, rated for 1.6 A with a maximum DC resistance of 43.3mOhm. This surface mount component is designed for applications requiring fixed inductance in compact nonstandard packages. The part is currently obsolete, necessitating identification of active equivalent alternatives to maintain supply chain continuity for existing designs.

Substiute Parts

ASPI-0428S-2R7M-T

Abracon LLCIn Stock: 678ASPI-0428S-2R7M-T Datasheet

Current PartRFQ

ASPI-0428S-2R7N-T

Abracon LLCIn Stock: 876ASPI-0428S-2R7N-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ASPI-0428S-2R7M-T is determined by the following critical parameters:

• Inductance Value: 2.7 µH (primary electrical specification)
• Current Rating: 1.6 A minimum (thermal and saturation performance)
• DC Resistance: 43.3mOhm maximum (power loss and thermal characteristics)
• Core Type and Shielding: Ferrite, shielded (electromagnetic performance and EMI containment)
• Package Dimensions: 4.70mm x 4.70mm footprint (physical board compatibility)
• Operating Temperature: -40°C ~ 85°C (environmental suitability)
• Compliance: ROHS3, MSL 1 (regulatory and manufacturing requirements)

The ASPI-0428S-2R7N-T meets all these criteria as an active equivalent from the same manufacturer series, with identical electrical performance and physical specifications.

Parameter Comparison

Engineering Selection Recommendations

The ASPI-0428S-2R7N-T is the direct active equivalent for the obsolete ASPI-0428S-2R7M-T. Both parts maintain identical electrical specifications, physical dimensions, and environmental ratings. The substitute part is currently in active production status with confirmed inventory availability.

The inductance tolerance difference (±20% vs ±30%) does not affect substitution eligibility, as the wider tolerance of the substitute remains within acceptable circuit design margins for applications originally specified with the main part.

Both parts carry ROHS3 compliance and MSL 1 rating, ensuring compatibility with current manufacturing and storage requirements. The packaging format difference (bulk vs Tape & Reel) is a supply chain consideration only and does not affect electrical or mechanical performance.

Frequently Asked Questions (FAQ)

Q: Can the ASPI-0428S-2R7N-T be used as a direct replacement for the ASPI-0428S-2R7M-T?

A: Yes. Both parts share identical inductance values, current ratings, DC resistance specifications, core materials, shielding, operating temperature ranges, and physical dimensions. The parts are electrically and mechanically interchangeable.

Q: What is the significance of the inductance tolerance difference?

A: The main part specifies ±20% tolerance while the substitute specifies ±30%. The wider tolerance of the substitute does not prevent substitution, as it encompasses the tighter tolerance range. Circuit designs accommodating the original ±20% specification will function within the substitute's ±30% tolerance band.

Q: Are there packaging or handling differences between these parts?

A: The main part is supplied in bulk packaging, while the substitute is supplied in Tape & Reel (TR) format. This affects handling and assembly processes but does not impact electrical performance or component functionality. Both parts maintain identical Moisture Sensitivity Level (MSL 1) ratings.

Q: Do both parts meet current regulatory requirements?

A: Yes. Both the ASPI-0428S-2R7M-T and ASPI-0428S-2R7N-T are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards for electronic component manufacturing and use.

Q: Why is the main part listed as obsolete?

A: The ASPI-0428S-2R7M-T has been discontinued by the manufacturer. The ASPI-0428S-2R7N-T remains in active production and serves as the current production equivalent for this inductance value and specification set within the ASPI-0428S series.