ASPI-0315FSSA-4R7M-T3 Equivalent & Substitute Parts

Part Overview

The ASPI-0315FSSA-4R7M-T3 is a 4.7 µH shielded drum core wirewound inductor manufactured by Abracon LLC, rated for 1 A continuous current with 110mOhm DC resistance. This component is designed for surface mount applications in compact form factors (3.00mm x 3.00mm x 1.50mm). The part is currently obsolete, necessitating identification of functionally equivalent alternatives to maintain design continuity and ensure supply chain availability for new production runs and field replacements.

Substiute Parts

ASPI-0315FSSA-4R7M-T3

Abracon LLCIn Stock: 1110ASPI-0315FSSA-4R7M-T3 Datasheet

Current PartRFQ

ASPI-0315FS-4R7M-T2

Abracon LLCIn Stock: 35568ASPI-0315FS-4R7M-T2 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ASPI-0315FSSA-4R7M-T3 is determined by the following critical parameters:

• Inductance Value: Must be 4.7 µH with ±20% tolerance
• Current Rating: Minimum 1 A continuous current capability
• Saturation Current (Isat): Minimum 1.1 A
• DC Resistance (DCR): Must not exceed 110 mOhm to maintain circuit performance
• Core Type: Shielded drum core wirewound construction
• Mounting: Surface mount configuration
• Package Footprint: 3.00mm x 3.00mm x 1.50mm maximum height
• Compliance: ROHS3 compliant, MSL 1 rating

The ASPI-0315FS-4R7M-T2 meets all substitution criteria with enhanced electrical performance characteristics and active product status.

Parameter Comparison

Engineering Selection Recommendations

The ASPI-0315FS-4R7M-T2 is the qualified substitute for the obsolete ASPI-0315FSSA-4R7M-T3. Selection is based on the following engineering criteria:

Product Status: The substitute part maintains active production status with Abracon LLC, ensuring long-term supply chain availability and manufacturing consistency. The original part is obsolete and no longer manufactured.

Compliance & Certifications: Both parts maintain ROHS3 compliance and MSL 1 rating, meeting regulatory requirements for industrial and commercial applications. REACH unaffected status is maintained across both components.

Electrical Performance: The substitute provides equivalent inductance (4.7 µH) and saturation current (1.1 A) with improved current rating (1.09 A vs. 1 A). The higher DC resistance (163 mOhm max vs. 110 mOhm) must be evaluated within circuit design parameters to confirm acceptable power dissipation and voltage drop characteristics.

Physical Compatibility: Identical footprint and height specifications ensure direct PCB layout compatibility without redesign requirements.

Temperature Operating Range: The substitute extends the upper operating temperature limit to 120°C, providing enhanced thermal margin for demanding applications.

Frequently Asked Questions (FAQ)

Q: Can ASPI-0315FS-4R7M-T2 be used as a direct replacement for ASPI-0315FSSA-4R7M-T3?

A: Yes. Both parts share identical inductance values, saturation current ratings, physical dimensions, and mounting specifications. The substitute is electrically and mechanically compatible for direct PCB substitution.

Q: What is the impact of the higher DC resistance in the substitute part?

A: The ASPI-0315FS-4R7M-T2 has a maximum DC resistance of 163 mOhm compared to 110 mOhm in the original part. This results in increased power dissipation (P = I²R). For a 1 A circuit, the additional dissipation is approximately 53 mW. Circuit designers must verify that thermal management and voltage drop specifications remain within acceptable limits for the application.

Q: Are there packaging differences between these parts?

A: The original part is supplied in standard packaging, while the substitute is available in Tape & Reel (TR) format. Both maintain identical component specifications and MSL 1 moisture sensitivity rating. Tape & Reel packaging is standard for high-volume surface mount assembly processes.

Q: What is the self-resonant frequency consideration?

A: The substitute part specifies a self-resonant frequency of 46 MHz. This parameter is not provided for the original part. For applications operating near or above this frequency, the substitute's frequency response characteristics should be verified against circuit requirements.

Q: Are both parts suitable for the same temperature range applications?

A: The substitute extends the upper operating temperature to 120°C versus 100°C for the original part. The lower temperature limit is -25°C for the substitute versus -30°C for the original. For applications requiring operation below -25°C, the original specification must be maintained or alternative parts evaluated.

Q: What certifications apply to both parts?

A: Both parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8504.50.4000. Moisture sensitivity level is 1 (unlimited) for both components, indicating no special moisture control requirements during storage or handling.