VLF252012MT-4R7M Equivalent & Substitute Parts

Part Overview

The VLF252012MT-4R7M is a 4.7 µH shielded drum core wirewound inductor manufactured by TDK Corporation in the VLF-M series. This surface mount component is rated for 1.09 A continuous current with a maximum DC resistance of 220mOhm, housed in a 1008 (2520 Metric) package. The part is currently obsolete, making identification of compatible substitute components essential for ongoing production and maintenance applications.

Substiute Parts

VLF252012MT-4R7M

TDK CorporationIn Stock: 3468VLF252012MT-4R7M Datasheet

Current PartRFQ

VLS252012HBX-4R7M-1

TDK CorporationIn Stock: 10312VLS252012HBX-4R7M-1 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the VLF252012MT-4R7M is determined by the following critical parameters:

Inductance value must remain 4.7 µH with ±20% tolerance to maintain circuit performance. The package must be 1008 (2520 Metric) surface mount to ensure mechanical and electrical compatibility with existing PCB layouts. Shielding must be maintained to preserve electromagnetic isolation characteristics. Operating temperature range must encompass -40°C ~ 105°C to support the same environmental conditions.

The substitute part VLS252012HBX-4R7M-1 meets these core requirements while offering improved electrical performance characteristics, including higher current rating and saturation current specifications.

Parameter Comparison

Engineering Selection Recommendations

The VLS252012HBX-4R7M-1 is the direct substitute for the obsolete VLF252012MT-4R7M. Both components share identical inductance values, tolerance specifications, package dimensions, and operating temperature ranges. The substitute part is currently in active production status with confirmed inventory availability.

The VLS252012HBX-4R7M-1 provides enhanced electrical performance with increased current rating (1.55 A versus 1.09 A) and higher saturation current (1.4A versus 620mA). The core material differs (metal versus ferrite), and DC resistance is marginally higher (240mOhm versus 220mOhm). These differences remain within acceptable substitution parameters for applications requiring the specified inductance and package form factor.

Both parts maintain identical moisture sensitivity levels and operating temperature specifications. The substitute part carries ROHS3 compliance certification, supporting modern regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can VLS252012HBX-4R7M-1 be used as a direct replacement for VLF252012MT-4R7M?

A: Yes. Both components share the same inductance value (4.7 µH), tolerance (±20%), package (1008 / 2520 Metric), mounting type (surface mount), and operating temperature range (-40°C ~ 105°C). Mechanical and electrical compatibility is maintained.

Q: What are the differences between these two parts?

A: The substitute part features a metal core instead of ferrite, higher current rating (1.55 A versus 1.09 A), higher saturation current (1.4A versus 620mA), and marginally higher DC resistance (240mOhm versus 220mOhm). The substitute is in active production while the original is obsolete.

Q: Are there any package or footprint differences?

A: No. Both parts use the 1008 (2520 Metric) package with identical dimensions: 0.098" L x 0.079" W (2.50mm x 2.00mm) and 0.047" maximum seated height (1.20mm). PCB layouts require no modification.

Q: What is the impact of the core material change from ferrite to metal?

A: Core material differences affect electromagnetic characteristics. The metal core in the substitute part provides higher saturation current and improved current handling. Applications must verify that the substitute part's electromagnetic properties are compatible with circuit requirements.

Q: Is the higher DC resistance of the substitute part a concern?

A: The DC resistance increase from 220mOhm to 240mOhm represents a 9% difference. For applications sensitive to resistive losses, this parameter must be evaluated against specific circuit requirements.

Q: What compliance certifications apply to the substitute part?

A: The VLS252012HBX-4R7M-1 is ROHS3 compliant. Both parts are REACH unaffected and classified under ECCN EAR99 and HTSUS 8504.50.4000.