ASPI-0412S-8R2N-T3 Equivalent & Substitute Parts

Part Overview

The ASPI-0412S-8R2N-T3 is an 8.2 µH shielded drum core, wirewound inductor manufactured by Abracon LLC, rated for 740 mA continuous current with a maximum DC resistance of 340mOhm. This component is classified as obsolete product status. Locating equivalent substitute parts is necessary due to discontinued availability and the need for continued supply chain support in applications requiring this inductance value and current rating.

Substiute Parts

ASPI-0412S-8R2N-T3

Abracon LLCIn Stock: 1041ASPI-0412S-8R2N-T3 Datasheet

Current PartRFQ

ASPI-4020S-8R2M-T

Abracon LLCIn Stock: 945ASPI-4020S-8R2M-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ASPI-0412S-8R2N-T3 is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 8.2 µH (exact match required)
• Core type: Ferrite drum core, wirewound, shielded
• Mounting: Surface mount
• Physical footprint: 4.00mm x 4.00mm base dimensions

Secondary Compatibility Factors:

• Current rating must meet or exceed 740 mA minimum requirement
• DC resistance should be minimized for efficiency but must not compromise thermal performance
• Operating temperature range must encompass the application environment
• Compliance certifications (RoHS3, REACH) must be maintained

The ASPI-4020S-8R2M-T meets all primary matching criteria and provides enhanced electrical performance characteristics suitable for direct substitution.

Parameter Comparison

Engineering Selection Recommendations

The ASPI-4020S-8R2M-T is the qualified substitute for the ASPI-0412S-8R2N-T3 based on the following engineering factors:

Electrical Compatibility: Both components maintain identical 8.2 µH inductance at 100 kHz test frequency. The substitute provides superior current handling capacity (1.04 A versus 740 mA) and significantly lower DC resistance (125mOhm versus 340mOhm), resulting in reduced power dissipation and improved thermal performance.

Physical Compatibility: Both parts share identical base footprint dimensions (4.00mm x 4.00mm) and surface mount configuration. The substitute exhibits increased seated height (2.00mm versus 1.20mm), which must be evaluated against available PCB clearance in the target application.

Compliance & Availability: The substitute maintains ROHS3 compliance and REACH unaffected status, matching the original part's regulatory requirements. Active product status ensures continued supply chain availability, addressing the obsolescence constraint of the original component.

Tolerance Improvement: The substitute offers tighter inductance tolerance (±20% versus ±30%), providing enhanced circuit performance predictability.

Frequently Asked Questions (FAQ)

Q: Can the ASPI-4020S-8R2M-T directly replace the ASPI-0412S-8R2N-T3 in existing designs?

A: Direct substitution is electrically valid. The substitute maintains the same inductance value and shielded ferrite core construction. Physical compatibility requires verification of the increased seated height (2.00mm versus 1.20mm) against available PCB clearance. No circuit redesign is required.

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

A: The primary differences are current rating (1.04 A versus 740 mA), DC resistance (125mOhm versus 340mOhm), inductance tolerance (±20% versus ±30%), operating temperature range (-40°C to 125°C versus -25°C to 100°C), and seated height (2.00mm versus 1.20mm). All other electrical and mechanical parameters remain equivalent.

Q: Why is the substitute part's DC resistance significantly lower?

A: Lower DC resistance results from improved winding design and core geometry in the active ASPI-4020S series. This reduction decreases resistive losses and heat generation during operation, providing efficiency benefits in current-limited applications.

Q: Are there any packaging differences between these parts?

A: Both components use surface mount packaging with identical base dimensions. The substitute is supplied in Tape & Reel (TR) format, while the original part packaging format is not specified. Verify tape specifications if automated assembly equipment compatibility is required.

Q: Does the increased operating temperature range of the substitute affect compatibility?

A: The substitute's extended temperature range (-40°C to 125°C versus -25°C to 100°C) provides broader environmental capability. This does not negatively impact compatibility; it expands the operational envelope for applications requiring extended temperature performance.

Q: What is the significance of the inductance tolerance difference?

A: The substitute's tighter tolerance (±20% versus ±30%) means the actual inductance value will remain closer to the nominal 8.2 µH specification. This improves circuit performance predictability and reduces design margin requirements in frequency-dependent applications.