ASPI-0428S-1R2M-T Equivalent & Substitute Parts

Part Overview

The ASPI-0428S-1R2M-T is a 1.2 µH shielded drum core, wirewound inductor manufactured by Abracon LLC, rated for 2.56 A with a maximum DC resistance of 23.6 mOhm. This surface mount component is designed for applications requiring compact, shielded inductance in nonstandard packaging. The part is currently obsolete, necessitating identification of functionally equivalent alternatives to maintain design continuity and ensure component availability for production and repair applications.

Substiute Parts

ASPI-0428S-1R2M-T

Abracon LLCIn Stock: 809ASPI-0428S-1R2M-T Datasheet

Current PartRFQ

ASPI-0428S-1R2N-T

Abracon LLCIn Stock: 919ASPI-0428S-1R2N-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ASPI-0428S-1R2M-T is determined by the following critical parameters:

• Inductance Value: 1.2 µH (primary electrical specification)
• Current Rating: 2.56 A minimum (thermal and saturation performance)
• DC Resistance: 23.6 mOhm maximum (power loss and thermal characteristics)
• Shielding: Shielded configuration (electromagnetic interference control)
• Core Material: Ferrite (frequency response and saturation characteristics)
• Mounting Type: Surface Mount (PCB assembly compatibility)
• Physical Dimensions: 0.185" L x 0.185" W x 0.118" H maximum (board layout constraints)
• Operating Temperature Range: -40°C ~ 85°C (environmental compatibility)
• Compliance: ROHS3 Compliant, MSL 1 (regulatory and handling requirements)

The ASPI-0428S-1R2N-T meets all substitution criteria as a direct equivalent within the same product series, with identical electrical performance and physical form factor.

Parameter Comparison

Engineering Selection Recommendations

The ASPI-0428S-1R2N-T is the direct substitute for the obsolete ASPI-0428S-1R2M-T. Both components are manufactured by Abracon LLC within the same product series and maintain identical electrical specifications, physical dimensions, and environmental ratings. The substitute part is currently in active production status, ensuring long-term availability and supply chain continuity.

Both parts maintain ROHS3 compliance and MSL 1 rating, satisfying regulatory and moisture sensitivity requirements. The primary difference is packaging format: the main part is supplied in bulk, while the substitute is available in Tape & Reel (TR) configuration, which is standard for automated assembly operations. The inductance tolerance difference (±20% versus ±30%) does not affect substitution eligibility when the main part's tolerance specification is met by the substitute's tighter tolerance range.

Frequently Asked Questions (FAQ)

Q: Can the ASPI-0428S-1R2N-T be used as a direct replacement for the ASPI-0428S-1R2M-T?

A: Yes. Both parts share identical inductance (1.2 µH), current rating (2.56 A), DC resistance (23.6 mOhm max), shielding configuration, core material, physical dimensions, and operating temperature range. The substitute is the manufacturer-recommended equivalent.

Q: What is the difference between the two part numbers?

A: The primary difference is packaging. The ASPI-0428S-1R2M-T is supplied in bulk packaging, while the ASPI-0428S-1R2N-T is supplied in Tape & Reel (TR) format. The inductance tolerance specification differs (±20% versus ±30%), but this does not affect functional compatibility.

Q: Are there any compliance or certification differences?

A: No. Both parts are ROHS3 compliant, carry MSL 1 rating, and are REACH unaffected. Environmental and regulatory requirements are identical.

Q: Will the substitute part fit the same PCB footprint?

A: Yes. Both components have identical physical dimensions: 0.185" L x 0.185" W (4.70mm x 4.70mm) with a maximum seated height of 0.118" (3.00mm). Surface mount compatibility is maintained.

Q: Why is the main part listed as obsolete?

A: The ASPI-0428S-1R2M-T has been discontinued by the manufacturer. The ASPI-0428S-1R2N-T remains in active production and is the recommended alternative for new designs and component replenishment.