ASPI-0310FSSA-220M-T4 Equivalent & Substitute Parts

Part Overview

The ASPI-0310FSSA-220M-T4 is a 22 µH shielded drum core wirewound inductor manufactured by Abracon LLC, rated for 400 mA continuous current with 1.03Ohm 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 inductance value and current rating specification.

Substiute Parts

ASPI-0310FSSA-220M-T4

Abracon LLCIn Stock: 1078ASPI-0310FSSA-220M-T4 Datasheet

Current PartRFQ

ASPI-0310FS-220M-T2

Abracon LLCIn Stock: 828ASPI-0310FS-220M-T2 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ASPI-0310FSSA-220M-T4 is determined by the following critical parameters:

• Inductance Value: Must be 22 µH (within ±20% tolerance specification)
• Core Type & Shielding: Nickel Zinc Ferrite drum core with shielding required
• Mounting Configuration: Surface mount, nonstandard package (3.00mm x 3.00mm footprint)
• Current Handling: Minimum 400 mA continuous current rating
• DC Resistance: Must not exceed application-specific loss requirements

The substitute part ASPI-0310FS-220M-T2 meets these core substitution criteria while offering enhanced electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The ASPI-0310FS-220M-T2 is qualified as a direct substitute for the obsolete ASPI-0310FSSA-220M-T4 based on the following engineering criteria:

Electrical Compatibility: Both components maintain identical 22 µH inductance at 100 kHz test frequency with ±20% tolerance. The substitute part provides superior current handling (700 mA vs. 400 mA) and lower DC resistance (780 mOhm vs. 1.03Ohm), resulting in reduced power dissipation and improved thermal performance in the same physical footprint.

Regulatory Compliance: Both parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited) moisture sensitivity ratings, ensuring equivalent environmental and regulatory qualification status.

Product Availability: The substitute part maintains active product status with confirmed inventory availability (766 Pcs), whereas the main part is obsolete. This substitution ensures continued supply chain access and long-term component availability.

Thermal Operating Range: The substitute part extends the upper operating temperature limit to 120°C (versus 100°C), providing additional thermal margin for demanding applications.

Frequently Asked Questions (FAQ)

Q: Can ASPI-0310FS-220M-T2 be used as a direct replacement for ASPI-0310FSSA-220M-T4?

A: Yes. Both components share identical inductance (22 µH), core material (NiZn ferrite), shielding configuration, package footprint (3.00mm x 3.00mm), and mounting type (surface mount). The substitute part exceeds the original specifications in current rating and saturation performance.

Q: What are the key differences between these two parts?

A: The primary differences are current rating (700 mA vs. 400 mA), DC resistance (780 mOhm vs. 1.03Ohm), saturation current (400 mA vs. 350 mA), operating temperature range (-25°C to 120°C vs. -30°C to 100°C), and product status (active vs. obsolete).

Q: Will the lower DC resistance of the substitute part affect circuit performance?

A: Lower DC resistance reduces power dissipation and heat generation. For applications operating at or below 400 mA, this represents an improvement. Verify that your circuit design does not depend on the specific impedance characteristics of the original 1.03Ohm resistance value.

Q: Are there any package or footprint compatibility concerns?

A: No. Both parts use identical nonstandard surface mount packages with 3.00mm x 3.00mm x 1.00mm dimensions, ensuring direct PCB compatibility without layout modifications.

Q: What is the significance of the product status change from obsolete to active?

A: Active product status indicates ongoing manufacturer support, continued availability, and compliance with current regulatory standards. This eliminates supply chain risk and ensures access to qualified components for future production runs.