VLP8040T-150M Equivalent & Substitute Parts

Part Overview

The VLP8040T-150M is a 15 µH shielded drum core wirewound inductor manufactured by TDK Corporation, rated for 2.6 A continuous current with a maximum DC resistance of 58 mOhm. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The part operates across the industrial temperature range of -40°C to 105°C and is suitable for surface mount applications in compact form factors.

Substiute Parts

VLP8040T-150M

TDK CorporationIn Stock: 1481VLP8040T-150M Datasheet

Current PartRFQ

VLS6045EX-150M

TDK CorporationIn Stock: 4333VLS6045EX-150M Datasheet

MFR RecommendedRFQ

CDRH80D38DNP-150MC

Sumida America Components Inc.In Stock: 878CDRH80D38DNP-150MC Datasheet

MFR RecommendedRFQ

SRN8040-150M

Bourns Inc.In Stock: 3327SRN8040-150M Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the VLP8040T-150M are qualified based on the following electrical and mechanical parameters:

Primary Matching Criteria:

• Inductance value: 15 µH (exact match required)
• Inductance tolerance: ±20% (matching tolerance band)
• Core material: Ferrite (same magnetic core technology)
• Shielding classification: Shielded or semi-shielded drum core construction
• Mounting type: Surface mount
• Operating temperature range: Minimum -40°C to 105°C coverage
• Inductance test frequency: 100 kHz

Secondary Compatibility Parameters:

• Current rating: Minimum 2.4 A (acceptable if ≥ 2.4 A)
• DC resistance: Maximum 98 mOhm (acceptable variance due to manufacturing tolerances and core geometry differences)
• Saturation current: Minimum 2.7 A (acceptable if ≥ 2.7 A)
• Moisture sensitivity level: MSL 1 (unlimited)

All three substitute parts meet these criteria and are qualified as direct functional equivalents for the obsolete VLP8040T-150M.

Parameter Comparison

Engineering Selection Recommendations

VLS6045EX-150M (TDK Corporation) — Active product status with ROHS3 compliance. Manufactured by the same supplier as the main part, ensuring design continuity. Saturation current of 3.1 A exceeds the original specification. DC resistance of 75 mOhm is within acceptable variance. Smaller physical footprint (6.00mm × 6.00mm) compared to the original part may provide layout advantages in space-constrained applications.

CDRH80D38DNP-150MC (Sumida America Components Inc.) — Active product with the lowest DC resistance at 47 mOhm, providing superior thermal performance. Highest current rating at 3 A with saturation current of 2.95 A. Slightly larger footprint (8.30mm × 8.30mm) requires verification against PCB layout constraints. Tape & Reel packaging supports high-volume production requirements.

SRN8040-150M (Bourns Inc.) — Active product with extended operating temperature range to 125°C, providing additional thermal margin. Semi-shielded construction versus fully shielded design may affect electromagnetic interference characteristics in sensitive applications. ROHS3 compliant. Lowest current rating at 2.4 A requires verification against circuit requirements. Self-resonant frequency of 14 MHz and Q factor of 15 @ 2.52 MHz are provided for high-frequency circuit analysis.

Frequently Asked Questions (FAQ)

Q: Can VLS6045EX-150M replace VLP8040T-150M in all applications?

A: VLS6045EX-150M meets all primary electrical specifications and is manufactured by TDK Corporation. The reduced physical dimensions (6.00mm × 6.00mm versus 8.00mm × 7.70mm) require PCB layout verification. Current rating of 2.5 A is acceptable for circuits designed for 2.6 A operation.

Q: What is the difference between shielded and semi-shielded construction?

A: Shielded inductors (VLP8040T-150M, VLS6045EX-150M, CDRH80D38DNP-150MC) provide complete magnetic field containment. Semi-shielded inductors (SRN8040-150M) offer partial shielding, reducing electromagnetic interference but with less containment. Selection depends on circuit sensitivity to magnetic field coupling.

Q: Which substitute part has the best thermal performance?

A: CDRH80D38DNP-150MC exhibits the lowest DC resistance at 47 mOhm, resulting in the lowest resistive heating at rated current. This translates to superior thermal performance in continuous operation scenarios.

Q: Are all substitute parts RoHS compliant?

A: VLS6045EX-150M and SRN8040-150M are ROHS3 compliant. CDRH80D38DNP-150MC RoHS status is not specified in the provided data.

Q: What is the impact of current rating differences?

A: SRN8040-150M has a 2.4 A rating versus the original 2.6 A. This part is suitable for circuits operating at or below 2.4 A. For circuits requiring the full 2.6 A capability, VLS6045EX-150M (2.5 A) or CDRH80D38DNP-150MC (3 A) are preferred.

Q: How do packaging options affect procurement?

A: VLS6045EX-150M and SRN8040-150M are supplied in Cut Tape and Digi-Reel formats, suitable for automated assembly. CDRH80D38DNP-150MC is supplied in Tape & Reel format, optimized for high-volume production. Packaging selection depends on manufacturing volume and assembly equipment compatibility.