GLFR2012T470M-LR Equivalent & Substitute Parts

Part Overview

The GLFR2012T470M-LR is a 47 µH shielded inductor manufactured by TDK Corporation in 0805 (2012 Metric) surface mount package. This component is rated for 230 mA continuous current with 1.38Ohm DC resistance and operates across -40°C to 105°C. The part is currently obsolete, making identification of suitable substitute components essential for ongoing production and maintenance applications.

Substiute Parts

GLFR2012T470M-LR

TDK CorporationIn Stock: 2180GLFR2012T470M-LR Datasheet

Current PartRFQ

MLZ2012M470WT000

TDK CorporationIn Stock: 26963MLZ2012M470WT000 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the GLFR2012T470M-LR is determined by the following critical parameters:

• Inductance Value: 47 µH (±20% tolerance maintained)
• Package Compatibility: 0805 (2012 Metric) surface mount form factor
• Shielding Type: Shielded construction required
• Physical Dimensions: 0.079" L x 0.049" W (2.00mm x 1.25mm) footprint
• Moisture Sensitivity: MSL 1 (Unlimited) classification

The MLZ2012M470WT000 meets these core substitution criteria. While the substitute exhibits different current rating (170 mA vs. 230 mA) and DC resistance (3.7Ohm vs. 1.38Ohm), these represent trade-offs inherent to the active product line. The substitute maintains identical inductance, package geometry, and shielding characteristics necessary for PCB-level compatibility.

Parameter Comparison

Engineering Selection Recommendations

The MLZ2012M470WT000 is the designated substitute for the obsolete GLFR2012T470M-LR. Selection of this substitute is supported by:

• Product Status: The substitute is active and in production, ensuring long-term availability and supply chain continuity.
• Regulatory Compliance: The MLZ2012M470WT000 carries ROHS3 compliance certification, meeting current environmental standards.
• Electrical Equivalence: Identical inductance value (47 µH) and saturation current (50mA) ensure functional compatibility at the circuit level.
• Physical Compatibility: Matching 0805 (2012 Metric) package and footprint dimensions enable direct PCB substitution without layout modifications.
• Environmental Certification: Both parts maintain REACH Unaffected status and MSL 1 classification.

Circuit designs operating at current levels below 170 mA are directly compatible. Applications requiring the full 230 mA rating of the original part require circuit-level evaluation due to the reduced current rating of the substitute.

Frequently Asked Questions (FAQ)

Q: Can the MLZ2012M470WT000 be used as a direct replacement on existing PCBs designed for the GLFR2012T470M-LR?

A: Yes, for applications operating at or below 170 mA. The identical 0805 (2012 Metric) package and matching footprint dimensions (0.079" L x 0.049" W) enable direct PCB substitution. The maximum seated height difference (0.057" vs. 0.053") is within typical PCB assembly tolerances.

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

A: The primary differences are current rating (230 mA vs. 170 mA), DC resistance (1.38Ohm vs. 3.7Ohm), and operating temperature range (-40°C to 105°C vs. -55°C to 125°C). Inductance value, tolerance, saturation current, shielding, and package remain identical.

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

A: DC resistance impact depends on circuit application. The 3.7Ohm resistance of the MLZ2012M470WT000 versus 1.38Ohm of the original part will increase power dissipation proportionally to current squared. Circuit-level thermal and performance analysis is required for applications sensitive to inductor losses.

Q: Does the substitute meet environmental and compliance requirements?

A: Yes. The MLZ2012M470WT000 is ROHS3 compliant and REACH Unaffected, meeting current regulatory standards. Both parts maintain MSL 1 (Unlimited) moisture sensitivity classification.

Q: What is the temperature operating range difference?

A: The substitute operates across -55°C to 125°C compared to the original -40°C to 105°C. This extended range provides additional thermal margin for applications operating at temperature extremes.