VLP8040T-331M Equivalent & Substitute Parts

Part Overview

The VLP8040T-331M is a 330 µH shielded drum core wirewound inductor manufactured by TDK Corporation, rated for 500 mA with a maximum DC resistance of 1.1Ohm. This component is designed for surface mount applications in circuits requiring fixed inductance filtering, energy storage, or impedance matching. The part is currently obsolete, making identification of suitable substitute components essential for ongoing production support, design updates, and inventory management.

Substiute Parts

VLP8040T-331M

TDK CorporationIn Stock: 1927VLP8040T-331M Datasheet

Current PartRFQ

ASPIAIG-S8050-331M-T

Abracon LLCIn Stock: 816ASPIAIG-S8050-331M-T Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the VLP8040T-331M is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 330 µH (±20% tolerance acceptable)
• Current rating: minimum 500 mA
• DC resistance: ≤1.1Ohm
• Shielding: Shielded configuration required
• Mounting: Surface mount only
• Package footprint: 8.00mm x 8.00mm to 8.70mm x 8.60mm compatible

Secondary Considerations:

• Core material compatibility (ferrite or nickel zinc ferrite acceptable for equivalent performance)
• Operating temperature range: minimum -40°C ~ 105°C
• Inductance test frequency: 100 kHz standard

The ASPIAIG-S8050-331M-T from Abracon LLC meets all primary matching criteria with improved electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The ASPIAIG-S8050-331M-T is a qualified substitute for the obsolete VLP8040T-331M based on the following factors:

Electrical Compatibility: The substitute maintains identical inductance (330 µH) and tolerance (±20%) at the standard test frequency of 100 kHz. The DC resistance of 1.044Ohm is lower than the 1.1Ohm maximum specification, resulting in reduced power dissipation. Current ratings are higher (650 mA vs. 500 mA), providing additional design margin.

Product Status: The ASPIAIG-S8050-331M-T is an active product with established supply chain availability (717 pcs in stock), whereas the VLP8040T-331M is obsolete. This substitution ensures long-term component availability for production and field service applications.

Compliance & Certifications: The substitute part carries AEC-Q200 automotive qualification and ROHS3 compliance, meeting modern regulatory requirements. Both parts are REACH unaffected and classified as EAR99 for export control purposes.

Physical Considerations: The substitute has a smaller footprint (8.00mm x 8.00mm vs. 8.70mm x 8.60mm) but increased height (5.20mm vs. 4.00mm). PCB layout verification is required to confirm vertical clearance compatibility with existing designs.

Frequently Asked Questions (FAQ)

Q: Can the ASPIAIG-S8050-331M-T directly replace the VLP8040T-331M in existing designs?

A: Electrical substitution is valid based on matching inductance, tolerance, and current ratings. Physical verification is required due to the increased height (5.20mm vs. 4.00mm). The smaller lateral footprint (8.00mm vs. 8.70mm) may require PCB layout adjustment.

Q: What is the impact of the different core materials (Ferrite vs. Nickel Zinc Ferrite)?

A: Both ferrite and nickel zinc ferrite cores are suitable for 330 µH inductors at 100 kHz test frequency. The nickel zinc ferrite in the substitute provides the specified electrical performance without functional degradation in typical filtering and impedance matching applications.

Q: Are there any temperature range limitations when substituting?

A: The substitute operates over -40°C ~ 125°C, which exceeds the original -40°C ~ 105°C range. This provides additional thermal margin for applications operating near the upper temperature limit of the original specification.

Q: What packaging format is the substitute supplied in?

A: The ASPIAIG-S8050-331M-T is supplied in Tape & Reel (TR) format, suitable for automated assembly processes. Confirm compatibility with existing pick-and-place equipment and tape specifications.

Q: Is the lower DC resistance of the substitute (1.044Ohm vs. 1.1Ohm) beneficial?

A: Yes. Lower DC resistance reduces I²R power dissipation and heat generation, improving efficiency and thermal performance in the application circuit.