VLF4012ST-6R8MR80 Equivalent & Substitute Parts

Part Overview

The VLF4012ST-6R8MR80 is a 6.8 µH shielded drum core wirewound inductor manufactured by TDK Corporation, rated for 800 mA with a maximum DC resistance of 320mOhm. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing production and maintenance applications. Substitute parts maintain the same inductance value and core shielding characteristics while offering improved current ratings, reduced DC resistance, or active product status.

Substiute Parts

VLF4012ST-6R8MR80

TDK CorporationIn Stock: 880VLF4012ST-6R8MR80 Datasheet

Current PartRFQ

VLS3012HBX-6R8M

TDK CorporationIn Stock: 3445VLS3012HBX-6R8M Datasheet

MFR RecommendedRFQ

VLS4012ET-6R8M

TDK CorporationIn Stock: 5261VLS4012ET-6R8M Datasheet

MFR RecommendedRFQ

SRR3011-6R8YL

Bourns Inc.In Stock: 759SRR3011-6R8YL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the VLF4012ST-6R8MR80 are qualified based on the following critical parameters:

• Inductance Value: All substitutes maintain 6.8 µH ±20% or ±30% tolerance
• Shielding Configuration: All substitutes are shielded drum core wirewound inductors
• Mounting Type: All substitutes are surface mount components
• Operating Temperature Range: All substitutes support -40°C minimum and 105°C or higher maximum
• Current Rating: Substitute parts must meet or exceed 800 mA minimum requirement
• DC Resistance: Substitute parts must maintain acceptable DCR values for thermal and efficiency performance

The three qualified substitutes represent different manufacturers and product lines, each offering distinct advantages in current handling capability, DC resistance characteristics, or product lifecycle status.

Parameter Comparison

Engineering Selection Recommendations

VLS3012HBX-6R8M (TDK Corporation): This substitute offers the highest current rating at 1.84 A with improved DC resistance of 285mOhm Max. The component features active product status and ROHS3 compliance. The smaller footprint (3.00mm x 3.00mm) may require PCB layout verification. Metal core construction provides enhanced current handling characteristics. Recommended for applications requiring maximum current capacity and long-term supply availability.

VLS4012ET-6R8M (TDK Corporation): This substitute provides the lowest DC resistance at 156mOhm Max, delivering superior thermal efficiency. Current rating of 1 A exceeds the original specification. Product status is classified as Not For New Designs, indicating limited future availability. ROHS3 compliance is confirmed. The larger footprint (4.00mm x 4.00mm) requires PCB space consideration. Suitable for existing designs requiring component replacement with minimal electrical parameter changes.

SRR3011-6R8YL (Bourns Inc.): This substitute maintains ferrite core construction consistent with the original part. Current rating of 720 mA approaches the original 800 mA specification. DC resistance of 210mOhm Max provides improved performance. Extended operating temperature range to 125°C offers thermal margin. Active product status ensures supply continuity. ROHS3 compliance is confirmed. Footprint dimensions (3.80mm x 3.80mm) closely match the original part, minimizing PCB redesign requirements.

Frequently Asked Questions (FAQ)

Q: Can VLS3012HBX-6R8M replace VLF4012ST-6R8MR80 in existing designs?

A: Yes. The VLS3012HBX-6R8M maintains identical inductance value, shielding configuration, and operating temperature range. The smaller footprint (3.00mm x 3.00mm versus 3.80mm x 3.60mm) requires PCB layout verification. The higher current rating (1.84 A) and lower DC resistance (285mOhm) provide improved performance margins.

Q: What are the key differences between the three substitute options?

A: VLS3012HBX-6R8M offers maximum current capacity with metal core construction and smallest footprint. VLS4012ET-6R8M provides lowest DC resistance but has Not For New Designs status. SRR3011-6R8YL maintains ferrite core construction with active product status and closest dimensional compatibility.

Q: Does inductance tolerance affect substitution compatibility?

A: All substitutes maintain ±20% tolerance except SRR3011-6R8YL at ±30%. For applications with tight inductance requirements, VLS3012HBX-6R8M or VLS4012ET-6R8M are preferred. SRR3011-6R8YL remains acceptable for most general-purpose filtering and energy storage applications.

Q: Are all substitutes RoHS compliant?

A: Yes. VLS3012HBX-6R8M, VLS4012ET-6R8M, and SRR3011-6R8YL are all ROHS3 compliant. The original VLF4012ST-6R8MR80 RoHS status is not specified.

Q: Which substitute is recommended for new designs?

A: VLS3012HBX-6R8M is recommended for new designs due to active product status, ROHS3 compliance, superior current rating, and improved DC resistance. VLS4012ET-6R8M should be avoided for new designs per its product classification. SRR3011-6R8YL is an acceptable alternative with active status and proven ferrite core performance.

Q: How do core material differences affect performance?

A: VLS3012HBX-6R8M uses metal core construction, providing superior current handling and lower DC resistance. VLF4012ST-6R8MR80, VLS4012ET-6R8M, and SRR3011-6R8YL use ferrite cores, offering established electromagnetic characteristics. Core material selection depends on specific application requirements for current capacity and thermal performance.

Q: Are there PCB layout considerations for substitution?

A: Yes. VLS3012HBX-6R8M has the smallest footprint (3.00mm x 3.00mm), requiring verification of available PCB space. VLS4012ET-6R8M has the largest footprint (4.00mm x 4.00mm). SRR3011-6R8YL dimensions (3.80mm x 3.80mm) closely match the original part, minimizing layout changes. All three maintain identical maximum height of 1.20mm to 1.30mm.