VLP8040T-220M Equivalent & Substitute Parts

Part Overview

The VLP8040T-220M is a 22 µH shielded drum core, wirewound inductor manufactured by TDK Corporation, rated for 2.2 A with a maximum DC resistance of 75 mOhm. This surface mount component operates across the temperature range of -40°C to 105°C and is designed for applications requiring fixed inductance in compact form factors. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

VLP8040T-220M

TDK CorporationIn Stock: 1457VLP8040T-220M Datasheet

Current PartRFQ

VLS6045EX-220M

TDK CorporationIn Stock: 12595VLS6045EX-220M Datasheet

MFR RecommendedRFQ

SRN8040-220M

Bourns Inc.In Stock: 1302SRN8040-220M Datasheet

DirectRFQ

CDRH80D38DNP-220MC

Sumida America Components Inc.In Stock: 2080CDRH80D38DNP-220MC Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the VLP8040T-220M is determined by the following critical parameters:

• Inductance Value: Must be 22 µH with ±20% tolerance
• Current Rating: Minimum 2.2 A to maintain equivalent current handling capability
• DC Resistance: Maximum 75 mOhm to ensure comparable power dissipation characteristics
• Shielding Type: Shielded configuration to maintain electromagnetic isolation
• Core Material: Ferrite drum core construction
• Operating Temperature Range: Minimum -40°C to 105°C coverage
• Mounting Type: Surface mount configuration
• Test Frequency: 100 kHz inductance measurement standard

The three substitute parts listed meet these core electrical and mechanical requirements with variations in current saturation ratings, physical dimensions, and DC resistance specifications.

Parameter Comparison

Engineering Selection Recommendations

VLS6045EX-220M (TDK Corporation): This active product from the same manufacturer offers the smallest footprint at 6.00mm x 6.00mm. However, the current rating of 1.9 A falls below the main part specification of 2.2 A. Selection of this substitute requires verification that application current demands do not exceed 1.9 A. The DC resistance of 105 mOhm exceeds the main part maximum of 75 mOhm. This part carries RoHS3 compliance certification.

SRN8040-220M (Bourns Inc.): This active product maintains the 2.2 A current rating and identical saturation current specification as the main part. Physical dimensions are comparable to the main part at 8.00mm x 8.00mm. The DC resistance of 100 mOhm exceeds the main part specification. Shielding is semi-shielded rather than fully shielded, which may affect electromagnetic isolation in sensitive applications. Operating temperature extends to 125°C. This part carries RoHS3 compliance certification and provides Q factor and self-resonant frequency data.

CDRH80D38DNP-220MC (Sumida America Components Inc.): This active product offers the lowest DC resistance at 65 mOhm, providing superior power dissipation characteristics compared to the main part. Current rating of 2.6 A exceeds the main part specification. Physical dimensions at 8.30mm x 8.30mm are comparable to the main part. Full shielding is maintained. Operating temperature range matches the main part at -40°C to 105°C.

Frequently Asked Questions (FAQ)

Q: Can VLS6045EX-220M replace VLP8040T-220M in all applications?

A: VLS6045EX-220M meets the inductance, tolerance, shielding, and temperature specifications. However, the current rating of 1.9 A is lower than the main part's 2.2 A specification. Substitution is valid only if circuit current requirements do not exceed 1.9 A. The increased DC resistance of 105 mOhm versus 75 mOhm will result in higher power dissipation.

Q: What is the primary difference between SRN8040-220M and the main part?

A: SRN8040-220M maintains equivalent current rating and saturation specifications. The primary differences are semi-shielded versus fully shielded construction and increased DC resistance of 100 mOhm. Semi-shielded construction may allow increased electromagnetic coupling to adjacent components. Extended operating temperature to 125°C provides additional thermal margin.

Q: Why does CDRH80D38DNP-220MC have lower DC resistance?

A: CDRH80D38DNP-220MC achieves 65 mOhm through different core and winding design. Lower DC resistance reduces I²R losses and heat generation. The higher current rating of 2.6 A reflects this improved thermal performance. This part is suitable for applications where power dissipation is a critical design constraint.

Q: Are there physical space constraints when substituting these parts?

A: Yes. VLS6045EX-220M is significantly smaller at 6.00mm x 6.00mm compared to the main part at 8.70mm x 8.60mm, allowing board space reduction. SRN8040-220M and CDRH80D38DNP-220MC are comparable in size to the main part with minor dimensional variations. Height differences range from 4.00mm to 4.50mm, which may affect clearance in constrained layouts.

Q: Which substitute part is recommended for new designs?

A: Selection depends on application requirements. For current-limited circuits below 1.9 A with space constraints, VLS6045EX-220M offers size advantages. For applications requiring full 2.2 A current with standard shielding, SRN8040-220M provides direct electrical equivalence. For applications prioritizing low power dissipation, CDRH80D38DNP-220MC offers superior thermal characteristics with the lowest DC resistance.

Q: Do all substitute parts have equivalent compliance certifications?

A: VLS6045EX-220M and SRN8040-220M carry RoHS3 compliance. All parts are REACH unaffected and classified as EAR99 for export control purposes. Compliance documentation should be verified with the specific supplier for the selected substitute part.