ASPI-0428S-3R3M-T Equivalent & Substitute Parts

Part Overview

The ASPI-0428S-3R3M-T is a 3.3 µH shielded drum core, wirewound inductor manufactured by Abracon LLC, rated for 1.57 A with a maximum DC resistance of 49.2 mOhm. This surface mount component is designed for applications requiring fixed inductance in compact nonstandard packages. The part is currently obsolete, making identification of functionally equivalent alternatives necessary for ongoing production support and design continuity.

Substiute Parts

ASPI-0428S-3R3M-T

Abracon LLCIn Stock: 1050ASPI-0428S-3R3M-T Datasheet

Current PartRFQ

ASPI-0428S-3R3N-T

Abracon LLCIn Stock: 1042ASPI-0428S-3R3N-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ASPI-0428S-3R3M-T is determined by the following critical parameters:

• Inductance Value: 3.3 µH (primary electrical specification)
• Current Rating: 1.57 A minimum (thermal and saturation performance)
• DC Resistance: 49.2 mOhm maximum (power loss and thermal characteristics)
• Core Material: Ferrite (electromagnetic performance and frequency response)
• Shielding: Shielded (EMI containment requirements)
• Package Dimensions: 0.185" L x 0.185" W x 0.118" H (physical fit in PCB layout)
• Mounting Type: Surface Mount (assembly compatibility)
• Operating Temperature: -40°C to 85°C (environmental suitability)
• Compliance: ROHS3, MSL 1, REACH Unaffected (regulatory and handling requirements)

The ASPI-0428S-3R3N-T meets all substitution criteria, with the primary difference being inductance tolerance (±30% vs. ±20%) and product status (Active vs. Obsolete).

Parameter Comparison

Engineering Selection Recommendations

The ASPI-0428S-3R3N-T is the direct substitute for the obsolete ASPI-0428S-3R3M-T. Both parts are manufactured by Abracon LLC within the same ASPI-0428S series and share identical electrical and mechanical specifications with the exception of inductance tolerance.

The substitute part maintains active product status, ensuring long-term availability and supply chain continuity. Both components satisfy ROHS3 compliance, REACH unaffected status, and MSL 1 moisture sensitivity requirements, making them suitable for equivalent applications without additional qualification.

The inductance tolerance difference (±30% vs. ±20%) should be evaluated against circuit design margins. Applications with strict inductance tolerance requirements may require circuit validation with the wider tolerance specification of the substitute part.

Frequently Asked Questions (FAQ)

Q: Can ASPI-0428S-3R3N-T directly replace ASPI-0428S-3R3M-T in existing designs?

A: Yes. Both parts share identical inductance values, current ratings, DC resistance, core material, shielding, package dimensions, and operating temperature ranges. The substitute is electrically and mechanically compatible for direct PCB substitution.

Q: What is the difference between these two parts?

A: The primary differences are inductance tolerance (±20% for the main part vs. ±30% for the substitute) and product status (Obsolete vs. Active). The substitute part is available in Tape & Reel packaging, while the main part was supplied in bulk.

Q: Does the wider inductance tolerance of the substitute affect circuit performance?

A: Inductance tolerance impact depends on circuit design. Applications with tight inductance specifications should verify that the ±30% tolerance of the substitute part remains within acceptable operating margins. Circuits with inductance-dependent frequency response or filtering characteristics may require validation.

Q: Are both parts compliant with current regulatory requirements?

A: Yes. Both ASPI-0428S-3R3M-T and ASPI-0428S-3R3N-T are ROHS3 compliant, REACH unaffected, and carry MSL 1 moisture sensitivity rating, meeting current regulatory and handling standards.

Q: What packaging formats are available?

A: The obsolete ASPI-0428S-3R3M-T was supplied in bulk packaging. The active substitute ASPI-0428S-3R3N-T is available in Tape & Reel (TR) format, standard for automated assembly processes.