ASPI-0418S-221M-T3 Equivalent & Substitute Parts

Part Overview

The ASPI-0418S-221M-T3 is a 220 µH shielded drum core wirewound inductor manufactured by Abracon LLC, designed for surface mount applications. This component features a ferrite core with 382mOhm DC resistance and operates across a temperature range of -25°C to 100°C. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing production and maintenance applications.

Substiute Parts

ASPI-0418S-221M-T3

Abracon LLCIn Stock: 989ASPI-0418S-221M-T3 Datasheet

Current PartRFQ

SRN4026-221M

Bourns Inc.In Stock: 5204SRN4026-221M Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ASPI-0418S-221M-T3 is determined by the following critical parameters:

• Inductance Value: 220 µH with ±20% tolerance
• Core Material: Ferrite construction
• Mounting Configuration: Surface mount technology
• Inductance Measurement Standard: 100 kHz test frequency
• Environmental Compliance: ROHS3 and REACH compliance status
• Moisture Sensitivity: MSL 1 rating

The SRN4026-221M from Bourns Inc. satisfies these core substitution criteria. Both components maintain identical inductance specifications, ferrite core construction, surface mount configuration, and equivalent environmental compliance certifications. The substitute part is classified as active product status, ensuring continued availability and supply chain reliability.

Parameter Comparison

Engineering Selection Recommendations

The SRN4026-221M is the designated substitute for the obsolete ASPI-0418S-221M-T3. Selection is based on the following engineering criteria:

Product Status: The original part is obsolete, while the substitute maintains active product status, ensuring long-term supply chain availability and manufacturer support.

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

Core Electrical Parameters: Identical inductance value (220 µH) and tolerance (±20%) at the standard 100 kHz test frequency ensure functional equivalence in circuit operation.

Environmental Rating: The substitute part extends the operating temperature range to -40°C ~ 125°C, providing broader thermal performance capability compared to the original -25°C ~ 100°C specification.

Packaging and Mounting: Both components utilize surface mount technology with nonstandard package configurations, maintaining mechanical compatibility in existing PCB layouts.

Frequently Asked Questions (FAQ)

Q: Can the SRN4026-221M directly replace the ASPI-0418S-221M-T3 in existing designs?

A: Yes. Both components share identical inductance specifications (220 µH ±20%), ferrite core construction, surface mount configuration, and equivalent environmental compliance. The substitute part is actively manufactured and available.

Q: What is the difference in shielding between these components?

A: The original ASPI-0418S-221M-T3 features full shielding, while the SRN4026-221M provides semi-shielded construction. This difference affects electromagnetic field containment characteristics and should be evaluated based on specific circuit EMI requirements.

Q: How do the DC resistance values differ?

A: The ASPI-0418S-221M-T3 specifies 382mOhm DC resistance, while the SRN4026-221M specifies 2.76Ohm maximum. This represents a significant difference in resistive losses. Circuit designs dependent on low DCR performance require evaluation of this parameter change.

Q: Are there temperature range considerations for substitution?

A: The substitute part operates across -40°C ~ 125°C, extending below and above the original -25°C ~ 100°C range. Applications operating within the original temperature window are fully compatible. Applications requiring extended low-temperature performance benefit from the substitute's expanded range.

Q: What is the current handling capability of the substitute part?

A: The SRN4026-221M is rated for 200 mA with saturation current of 200mA. The original part does not specify current rating. Circuit designs must ensure current levels remain within the 200 mA specification.

Q: Are moisture sensitivity levels equivalent?

A: Yes. Both components maintain MSL 1 (Unlimited) rating, indicating identical moisture sensitivity classification and storage requirements.