VLS2012ET-3R3M Equivalent & Substitute Parts

Part Overview

The VLS2012ET-3R3M is a 3.3 µH shielded wirewound inductor manufactured by TDK Corporation, rated for 840 mA continuous current with a maximum DC resistance of 228 mOhm. This component is designed for surface mount applications in compact form factors. The part is marked as Not For New Designs, making identification of suitable alternatives essential for ongoing production and new design initiatives.

Substiute Parts

VLS2012ET-3R3M

TDK CorporationIn Stock: 35129VLS2012ET-3R3M Datasheet

Current PartRFQ

VLS201610CX-3R3M-1

TDK CorporationIn Stock: 38308VLS201610CX-3R3M-1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the VLS2012ET-3R3M is determined by the following critical parameters:

• Inductance Value: Must remain 3.3 µH with ±20% tolerance to maintain circuit functionality
• Current Rating: Substitute must support minimum 840 mA; higher ratings are acceptable
• DC Resistance: Must not exceed 228 mOhm to preserve power efficiency characteristics
• Shielding: Must be shielded to maintain electromagnetic compatibility
• Surface Mount Compatibility: Must support surface mount assembly processes
• Operating Temperature: Must cover -40°C ~ 105°C range
• Compliance: Must maintain ROHS3 compliance and MSL 1 rating

The VLS201610CX-3R3M-1 qualifies as a manufacturer-recommended substitute by meeting or exceeding all critical parameters while offering improved current handling capability and active product status.

Parameter Comparison

Engineering Selection Recommendations

The VLS201610CX-3R3M-1 is the manufacturer-recommended substitute for the VLS2012ET-3R3M. Selection should be based on the following factors:

For Existing Designs: The VLS2012ET-3R3M remains functionally compatible with existing PCB layouts due to identical inductance, tolerance, and shielding characteristics. However, the reduced height (1.00mm vs 1.20mm) of the substitute may require PCB clearance verification.

For New Designs: The VLS201610CX-3R3M-1 is the appropriate choice due to its Active product status. The substitute provides superior current handling (1.2 A vs 840 mA) and maintains all critical electrical parameters within acceptable tolerances.

Compliance Considerations: Both parts maintain ROHS3 compliance, MSL 1 rating, and identical operating temperature ranges, ensuring regulatory and environmental compatibility across applications.

Frequently Asked Questions (FAQ)

Q: Can the VLS201610CX-3R3M-1 be used as a direct replacement for the VLS2012ET-3R3M?

A: Yes. Both inductors share identical inductance values (3.3 µH), tolerance (±20%), shielding, and operating temperature ranges. The substitute exceeds the current rating requirement and maintains ROHS3 compliance. PCB layout verification is recommended due to dimensional differences.

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

A: The primary differences are product status (Active vs Not For New Designs), current rating (1.2 A vs 840 mA), DC resistance (253 mOhm vs 228 mOhm), and physical dimensions. The substitute offers improved current capacity and reduced height.

Q: Are there any package compatibility concerns?

A: Both parts use nonstandard surface mount packages. The VLS201610CX-3R3M-1 has a smaller footprint (2.00mm x 1.60mm vs 2.00mm x 2.00mm) and reduced height (1.00mm vs 1.20mm). Verify PCB clearance and component placement before implementation.

Q: Does the higher DC resistance of the substitute affect circuit performance?

A: The DC resistance increase from 228 mOhm to 253 mOhm represents a 10.9% variance. For applications where power dissipation is critical, thermal analysis is recommended. For most general-purpose filtering and energy storage applications, this variance is within acceptable engineering tolerances.

Q: Are both parts suitable for high-reliability applications?

A: Both inductors maintain ROHS3 compliance and MSL 1 (Unlimited) ratings. The VLS201610CX-3R3M-1 is preferred for new high-reliability designs due to its Active product status and superior current handling capability.