GLFR2012T4R7M-LR Equivalent & Substitute Parts

Part Overview

The GLFR2012T4R7M-LR is a 4.7 µH shielded inductor manufactured by TDK Corporation in 0805 (2012 Metric) surface mount package. This component is designed for applications requiring fixed inductance with moderate current handling and low DC resistance characteristics. The part is currently obsolete, making identification of suitable substitute components essential for ongoing production and maintenance applications.

Substiute Parts

GLFR2012T4R7M-LR

TDK CorporationIn Stock: 3244GLFR2012T4R7M-LR Datasheet

Current PartRFQ

MLZ2012M4R7HT000

TDK CorporationIn Stock: 30821MLZ2012M4R7HT000 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the GLFR2012T4R7M-LR is determined by the following critical parameters:

• Inductance Value: 4.7 µH (±20% tolerance)
• Package / Case: 0805 (2012 Metric) surface mount
• Shielding Type: Shielded construction
• Physical Dimensions: 0.079" L x 0.049" W (2.00mm x 1.25mm)
• Mounting Type: Surface Mount

The MLZ2012M4R7HT000 qualifies as a substitute based on matching inductance value, package type, shielding requirement, and physical footprint. Both components are shielded inductors in identical 0805 (2012 Metric) packages with 4.7 µH inductance and ±20% tolerance.

Parameter Comparison

Engineering Selection Recommendations

The MLZ2012M4R7HT000 is an active product from TDK Corporation and serves as the direct substitute for the obsolete GLFR2012T4R7M-LR. Both components share identical inductance specifications, package geometry, and shielding characteristics, enabling direct footprint compatibility.

The substitute part offers extended operating temperature range (-55°C ~ 125°C versus -40°C ~ 105°C) and ROHS3 compliance, providing advantages for modern production environments. The MLZ2012M4R7HT000 is currently in active production with substantial inventory availability (30,800 pcs), ensuring supply chain continuity.

Design considerations for substitution include the reduced current rating (400 mA versus 600 mA) and increased DC resistance (340 mOhm versus 200 mOhm) of the substitute part. Applications operating at or near the original 600 mA specification require circuit-level evaluation to confirm compatibility with the lower current rating and higher resistive losses of the MLZ2012M4R7HT000.

Frequently Asked Questions (FAQ)

Q: Can the MLZ2012M4R7HT000 be used as a direct replacement for GLFR2012T4R7M-LR?

A: Yes, for applications where the circuit current demand does not exceed 400 mA. Both components are 0805 (2012 Metric) shielded inductors with 4.7 µH inductance and identical physical footprints, enabling direct PCB substitution. Applications requiring the full 600 mA rating of the original part require circuit analysis.

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

A: The primary differences are current rating (600 mA vs. 400 mA), DC resistance (200 mOhm vs. 340 mOhm), saturation current (140 mA vs. 300 mA), and operating temperature range (-40°C ~ 105°C vs. -55°C ~ 125°C). Inductance value, tolerance, package type, and shielding are identical.

Q: Are there any height clearance concerns when substituting?

A: The substitute part has a maximum seated height of 0.057" (1.45mm) compared to 0.053" (1.35mm) for the original. This 0.004" (0.10mm) difference is negligible for most PCB designs but should be verified in space-constrained applications.

Q: What is the compliance status of the substitute part?

A: The MLZ2012M4R7HT000 is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic components.

Q: How does the increased DC resistance affect circuit performance?

A: The 340 mOhm DCR of the substitute versus 200 mOhm of the original results in increased resistive losses. For DC current applications, this produces additional heat dissipation proportional to I²R. Circuit designers must evaluate whether this increased resistance is acceptable for their specific application requirements.