VLF4014ST-6R8M1R2 Equivalent & Substitute Parts

Part Overview

The VLF4014ST-6R8M1R2 is a 6.8 µH shielded drum core wirewound inductor manufactured by TDK Corporation, rated for 1.2 A with a maximum DC resistance of 190mOhm. This component is classified as obsolete, making substitute parts necessary for new procurement and ongoing production support. The part operates across the temperature range of -40°C to 105°C and is suitable for surface mount applications in nonstandard packaging configurations.

Substiute Parts

VLF4014ST-6R8M1R2

TDK CorporationIn Stock: 763VLF4014ST-6R8M1R2 Datasheet

Current PartRFQ

VLS3012HBX-6R8M

TDK CorporationIn Stock: 3445VLS3012HBX-6R8M Datasheet

MFR RecommendedRFQ

VLS4012ET-6R8M

TDK CorporationIn Stock: 5261VLS4012ET-6R8M Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the VLF4014ST-6R8M1R2 are qualified based on the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Inductance value: 6.8 µH (exact match required)
• Inductance tolerance: ±20% (matching tolerance specification)
• Shielding: Shielded configuration
• Core type: Drum core, wirewound construction
• Operating temperature range: -40°C ~ 105°C (minimum requirement)
• Mounting type: Surface mount
• Test frequency: 1 MHz

Secondary Compatibility Parameters:

• Current rating: Must meet or exceed 1.2 A minimum
• DC resistance: Lower or equal values are acceptable
• Saturation current: Must support rated current without saturation below 1.2 A

The two qualified substitutes differ in core material composition and physical dimensions while maintaining electrical equivalence within the specified parameter set.

Parameter Comparison

Engineering Selection Recommendations

VLS3012HBX-6R8M is the primary recommended substitute. This part is in active production status and provides superior current handling capability at 1.84 A, exceeding the original 1.2 A rating. The metal core construction offers enhanced performance characteristics while maintaining the required 6.8 µH inductance and shielded configuration. This part is RoHS3 compliant and available in standard tape and reel packaging with 3400 units in stock.

VLS4012ET-6R8M is an alternative substitute suitable for applications where the original 1.2 A current rating is not fully utilized. This part maintains ferrite core construction matching the original design and provides lower DC resistance at 156mOhm. However, its saturation current of 1 A limits its use to applications requiring less than 1 A continuous current. This part carries a "Not For New Designs" status and is available in cut tape and Digi-Reel packaging with 5200 units in stock.

Frequently Asked Questions (FAQ)

Q: Can VLS3012HBX-6R8M directly replace VLF4014ST-6R8M1R2 in all applications?

A: Yes, within the electrical and thermal specifications. The VLS3012HBX-6R8M meets all primary substitution criteria: identical 6.8 µH inductance, ±20% tolerance, shielded configuration, and -40°C to 105°C operating range. The higher current rating (1.84 A vs. 1.2 A) and lower DC resistance (285mOhm vs. 190mOhm) are compatible with the original design envelope. Physical dimensions differ (3.00mm x 3.00mm vs. 3.80mm x 3.60mm), requiring PCB layout verification.

Q: What are the key differences between the two substitute parts?

A: VLS3012HBX-6R8M uses metal core construction with higher current capacity (1.84 A) and is in active production. VLS4012ET-6R8M uses ferrite core construction with lower current capacity (1 A) and is not recommended for new designs. Both maintain the 6.8 µH inductance specification and shielded configuration.

Q: Is packaging compatibility a concern when substituting these parts?

A: Yes. The original VLF4014ST-6R8M1R2 uses nonstandard packaging. VLS3012HBX-6R8M is supplied in tape and reel format, while VLS4012ET-6R8M is supplied in cut tape and Digi-Reel format. PCB footprint and pick-and-place equipment compatibility must be verified before implementation.

Q: Can VLS4012ET-6R8M be used as a substitute if current requirements are lower?

A: VLS4012ET-6R8M is suitable only for applications where continuous current does not exceed 1 A. Its saturation current rating of 1 A makes it incompatible with the original 1.2 A specification. This part is also designated "Not For New Designs," limiting its use to legacy system support.

Q: What compliance certifications apply to these substitute parts?

A: VLS3012HBX-6R8M is RoHS3 compliant. VLS4012ET-6R8M is RoHS3 compliant. Both parts are REACH unaffected and classified under ECCN EAR99. All three parts (original and substitutes) have moisture sensitivity level 1 (unlimited).