GLCR2012T4R7M-HC Equivalent & Substitute Parts

Part Overview

The GLCR2012T4R7M-HC is a 4.7 µH shielded wirewound inductor manufactured by TDK Corporation, designed for surface mount applications in the 0805 (2012 Metric) package. This component is rated for 500 mA continuous current with a DC resistance of 290mOhm and operates across the temperature range of -40°C to 105°C. The part is currently listed as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and production continuity.

Substiute Parts

GLCR2012T4R7M-HC

TDK CorporationIn Stock: 26130GLCR2012T4R7M-HC Datasheet

Current PartRFQ

MLZ2012M4R7HT000

TDK CorporationIn Stock: 30821MLZ2012M4R7HT000 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the GLCR2012T4R7M-HC is determined by the following critical parameters:

• Inductance Value: 4.7 µH with ±20% tolerance
• Package Compatibility: 0805 (2012 Metric) surface mount form factor
• Shielding Requirement: Shielded construction
• Current Handling: Minimum 500 mA continuous current rating
• DC Resistance: Operating range compatible with 290 mOhm baseline
• Temperature Range: Operating capability within -40°C to 105°C

The MLZ2012M4R7HT000 qualifies as a substitute based on matching inductance value, package type, shielding specification, and temperature operating range. Variations in construction type (multilayer versus wirewound), DC resistance, and saturation current are secondary parameters that must be evaluated within the specific circuit application context.

Parameter Comparison

Engineering Selection Recommendations

The MLZ2012M4R7HT000 is an active product with current manufacturing support and ROHS3 compliance, providing supply chain continuity for the obsolete GLCR2012T4R7M-HC. Both components share identical inductance values, package dimensions, and shielding specifications, enabling direct footprint compatibility on PCB layouts.

The primary design consideration is the reduced current rating of the MLZ2012M4R7HT000 (400 mA versus 500 mA). Applications requiring the full 500 mA continuous current capability of the original part must evaluate whether the 400 mA rating of the substitute meets circuit requirements. The increased DC resistance (340 mOhm versus 290 mOhm) results in proportionally higher power dissipation and should be assessed for thermal management implications.

The extended operating temperature range of the MLZ2012M4R7HT000 (-55°C to 125°C) provides broader environmental coverage compared to the original specification (-40°C to 105°C). The ferrite core construction and specified self-resonant frequency of 60 MHz support high-frequency circuit applications.

Frequently Asked Questions (FAQ)

Q: Can the MLZ2012M4R7HT000 be used as a direct replacement for the GLCR2012T4R7M-HC?

A: Yes, for applications where the 400 mA current rating is sufficient. Both components share the same inductance value (4.7 µH), package type (0805 / 2012 Metric), and shielding specification. PCB footprints are identical. Applications requiring the full 500 mA rating of the original part require circuit redesign or alternative component selection.

Q: What are the differences in construction between these two inductors?

A: The GLCR2012T4R7M-HC uses wirewound construction, while the MLZ2012M4R7HT000 uses multilayer construction with a ferrite core. Both are shielded designs. The multilayer construction of the substitute provides a specified self-resonant frequency of 60 MHz.

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

A: The MLZ2012M4R7HT000 has 50 mOhm higher DC resistance (340 mOhm versus 290 mOhm). In circuits where the inductor carries significant current, this results in increased I²R power dissipation and heat generation. Calculate power loss using P = I² × R to determine if thermal management modifications are necessary.

Q: Are both components RoHS compliant?

A: The MLZ2012M4R7HT000 is ROHS3 compliant. RoHS status for the GLCR2012T4R7M-HC is not specified in the provided data.

Q: What is the saturation current difference, and does it matter?

A: The GLCR2012T4R7M-HC has a saturation current of 225 mA, while the MLZ2012M4R7HT000 has 300 mA. Saturation current represents the point at which inductor performance degrades due to core saturation. The higher saturation current of the substitute provides additional margin in this parameter.

Q: Can these components be used interchangeably in high-frequency applications?

A: The MLZ2012M4R7HT000 specifies a self-resonant frequency of 60 MHz. Applications operating near or above this frequency require evaluation of frequency-dependent behavior. The original part's self-resonant frequency is not specified, requiring circuit testing to confirm compatibility in high-frequency designs.