ASPI-0312FSSA-2R0M-T4 Equivalent & Substitute Parts

Part Overview

The ASPI-0312FSSA-2R0M-T4 is a 2 µH shielded drum core wirewound inductor manufactured by Abracon LLC, rated for 1.35 A continuous current with 69 mOhm DC resistance. This component is classified as obsolete product status. Identifying equivalent and substitute parts is necessary due to discontinued availability, ensuring design continuity and supply chain reliability for applications requiring compatible inductance and current handling characteristics.

Substiute Parts

ASPI-0312FSSA-2R0M-T4

Abracon LLCIn Stock: 942ASPI-0312FSSA-2R0M-T4 Datasheet

Current PartRFQ

ASPI-0312FS-2R2M-T2

Abracon LLCIn Stock: 5155ASPI-0312FS-2R2M-T2 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ASPI-0312FSSA-2R0M-T4 is determined by the following critical parameters:

Primary Substitution Criteria:

• Inductance value within ±20% tolerance band (1.6 µH to 2.4 µH acceptable range)
• Current rating sufficient to support 1.35 A continuous operation
• DC resistance comparable to 69 mOhm (allowing for minor variations within tolerance)
• Shielded drum core wirewound construction
• Surface mount nonstandard package with 3.00 mm x 3.00 mm footprint
• Height compatibility at 1.20 mm maximum seated height
• Operating temperature range encompassing -30°C to 100°C minimum

Substitute Part Identified: ASPI-0312FS-2R2M-T2 meets substitution criteria with inductance of 2.2 µH (within ±20% tolerance), current rating of 1.2 A, DC resistance of 70 mOhm, identical physical dimensions, and active product status ensuring continued availability.

Parameter Comparison

Engineering Selection Recommendations

The ASPI-0312FS-2R2M-T2 is the qualified substitute for ASPI-0312FSSA-2R0M-T4 based on the following engineering factors:

Product Status: The substitute part maintains active product status, ensuring long-term supply chain availability and manufacturing continuity, whereas the main part is obsolete.

Compliance & Certifications: Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for equivalent applications.

Physical Compatibility: Identical footprint dimensions (3.00 mm x 3.00 mm) and seated height (1.20 mm) enable direct PCB layout compatibility without redesign.

Electrical Performance: The substitute inductance of 2.2 µH falls within the ±20% tolerance specification of the main part (acceptable range 1.6 µH to 2.4 µH). DC resistance of 70 mOhm is equivalent to the main part specification of 69 mOhm. Current rating of 1.2 A is lower than the main part's 1.35 A; applications operating at or above 1.2 A continuous current require circuit-level evaluation.

Frequently Asked Questions (FAQ)

Q: Can ASPI-0312FS-2R2M-T2 directly replace ASPI-0312FSSA-2R0M-T4 in existing designs?

A: Direct replacement is possible for applications operating below 1.2 A continuous current. The substitute part meets physical footprint, inductance tolerance, and DC resistance specifications. Applications requiring the full 1.35 A rating of the original part require circuit analysis to confirm adequate performance margin.

Q: What is the inductance tolerance range for both parts?

A: Both parts specify ±20% inductance tolerance. For the main part at 2 µH, the acceptable range is 1.6 µH to 2.4 µH. For the substitute at 2.2 µH, the acceptable range is 1.76 µH to 2.64 µH. The substitute inductance value of 2.2 µH falls within the main part's tolerance band.

Q: Are there differences in core material between the parts?

A: The main part uses Nickel Zinc Ferrite (NiZn) core material, while the substitute uses ferrite core material. Both are shielded drum core wirewound constructions tested at 100 kHz. Core material differences may affect frequency response characteristics outside the specified test frequency.

Q: What is the packaging difference between the parts?

A: The main part is supplied in standard packaging format, while the substitute is supplied in Tape & Reel (TR) format. Both maintain identical component dimensions and surface mount nonstandard package specifications.

Q: How do the saturation current ratings compare?

A: The main part specifies saturation current (Isat) of 1.55 A, while the substitute specifies 1.1 A. This indicates the substitute part reaches magnetic saturation at lower current levels. Applications approaching saturation current limits require evaluation of the substitute's lower saturation threshold.

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

A: The main part operates from -30°C to 100°C, while the substitute operates from -25°C to 120°C. The substitute provides extended high-temperature capability but narrower low-temperature range. Applications requiring operation below -25°C are not suitable for the substitute part.