ASPI-0310FSSA-3R3M-T4 Equivalent & Substitute Parts

Part Overview

The ASPI-0310FSSA-3R3M-T4 is a 3.3 µH shielded drum core wirewound inductor manufactured by Abracon LLC, rated for 950 mA continuous current with 140mOhm DC resistance. This component is classified as obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this inductor specification.

Substiute Parts

ASPI-0310FSSA-3R3M-T4

Abracon LLCIn Stock: 818ASPI-0310FSSA-3R3M-T4 Datasheet

Current PartRFQ

ASPI-0310FS-3R3M-T2

Abracon LLCIn Stock: 1175ASPI-0310FS-3R3M-T2 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ASPI-0310FSSA-3R3M-T4 is determined by the following critical parameters:

Electrical Parameters:

• Inductance value: 3.3 µH (fixed requirement)
• Inductance tolerance: ±20% (acceptable range)
• Core material: Nickel Zinc Ferrite (NiZn) (material specification)
• Shielding: Shielded (electromagnetic containment requirement)

Current Handling:

• Current rating must equal or exceed 950 mA
• Saturation current (Isat) must support the application's peak current demands

Thermal & Resistance:

• DC resistance must be compatible with circuit power dissipation requirements
• Operating temperature range must encompass application environment

Physical & Mechanical:

• Mounting type: Surface Mount (PCB assembly compatibility)
• Package dimensions: 3.00mm x 3.00mm footprint (PCB layout constraint)
• Height: 1.00mm maximum (clearance requirement)

Compliance:

• RoHS3 compliance (regulatory requirement)
• MSL rating: 1 (Unlimited) (moisture handling)

The ASPI-0310FS-3R3M-T2 qualifies as a direct substitute based on matching inductance, core material, shielding, mounting type, physical dimensions, and compliance certifications, while providing enhanced current rating and improved DC resistance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The ASPI-0310FS-3R3M-T2 is the direct substitute for the obsolete ASPI-0310FSSA-3R3M-T4. Selection is supported by the following factors:

Product Status: The substitute part maintains active product status with Abracon LLC, ensuring ongoing availability and supply chain continuity compared to the obsolete main part.

Electrical Compatibility: Both parts share identical inductance (3.3 µH), tolerance (±20%), core material (NiZn), and shielding characteristics. The substitute provides higher current rating (1.8 A vs. 950 mA) and lower DC resistance (130 mOhm vs. 140 mOhm), representing performance improvements within the same electrical class.

Physical Compatibility: Identical footprint (3.00mm x 3.00mm) and height (1.00mm) ensure direct PCB layout compatibility without redesign.

Compliance & Certifications: Both parts maintain ROHS3 compliance, MSL rating of 1 (Unlimited), and identical regulatory classifications (ECCN: EAR99, HTSUS: 8504.50.4000).

Thermal Performance: The substitute extends the operating temperature range (-25°C ~ 120°C vs. -30°C ~ 100°C), providing broader environmental compatibility.

Frequently Asked Questions (FAQ)

Q: Can the ASPI-0310FS-3R3M-T2 directly replace the ASPI-0310FSSA-3R3M-T4 without circuit modification?

A: Yes. Both inductors share identical inductance value (3.3 µH), tolerance (±20%), core material (NiZn), shielding, physical dimensions (3.00mm x 3.00mm), and height (1.00mm). The substitute is electrically and mechanically compatible for direct substitution.

Q: What are the differences between these two parts?

A: The substitute (ASPI-0310FS-3R3M-T2) provides enhanced specifications: current rating increased from 950 mA to 1.8 A, saturation current increased from 900 mA to 1.05 A, DC resistance reduced from 140 mOhm to 130 mOhm, and operating temperature range extended from -30°C ~ 100°C to -25°C ~ 120°C. Product status changes from obsolete to active.

Q: Are there packaging differences between these parts?

A: The main part (ASPI-0310FSSA-3R3M-T4) uses nonstandard packaging, while the substitute (ASPI-0310FS-3R3M-T2) is supplied in Tape & Reel (TR) format. Both maintain identical component dimensions and mounting characteristics.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both parts are ROHS3 compliant, carry MSL rating 1 (Unlimited), and share identical regulatory classifications (ECCN: EAR99, HTSUS: 8504.50.4000).

Q: Why is the main part listed as obsolete?

A: The ASPI-0310FSSA-3R3M-T4 is classified as obsolete by Abracon LLC. The ASPI-0310FS-3R3M-T2 represents the active product line continuation with improved electrical performance and extended operating temperature range.