GLFR2012T100M-LR Equivalent & Substitute Parts

Part Overview

The GLFR2012T100M-LR is a 10 µH shielded 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 300mOhm and operates across the temperature range of -40°C to 105°C. The product is currently listed as obsolete, making identification of suitable substitute components essential for ongoing design support and procurement continuity.

Substiute Parts

GLFR2012T100M-LR

TDK CorporationIn Stock: 7461GLFR2012T100M-LR Datasheet

Current PartRFQ

MLZ2012M100HT000

TDK CorporationIn Stock: 51214MLZ2012M100HT000 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the GLFR2012T100M-LR is determined by the following critical parameters:

• Inductance Value: Must be 10 µH with ±20% tolerance
• Package / Case: Must be 0805 (2012 Metric) for PCB compatibility
• Shielding: Must be shielded to maintain electromagnetic isolation
• Mounting Type: Must be surface mount
• Current Rating: Substitute must support the application's current requirements
• DC Resistance (DCR): Must be compatible with circuit performance specifications
• Operating Temperature Range: Must cover or exceed the application's thermal requirements

The MLZ2012M100HT000 qualifies as a substitute based on matching inductance value, package type, shielding configuration, and surface mount compatibility. However, differences in current rating, DC resistance, and operating temperature range must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The MLZ2012M100HT000 is an active product from TDK Corporation and represents a viable substitute for the obsolete GLFR2012T100M-LR based on matching inductance, package, and shielding specifications. The substitute offers an extended operating temperature range (-55°C ~ 125°C versus -40°C ~ 105°C), providing broader thermal coverage.

Key considerations for selection:

• Current Rating Reduction: The substitute is rated for 300 mA versus the original 500 mA. Applications requiring the full 500 mA rating must be re-evaluated.
• DC Resistance Increase: The substitute exhibits 680mOhm DCR compared to 300mOhm in the original. This increased resistance will result in higher power dissipation and must be assessed for thermal and efficiency impacts.
• Saturation Current: The substitute has a higher Isat rating (200mA versus 100mA), which may affect performance in current-limited applications.
• Physical Height: The substitute is 0.004" (0.10mm) taller, which must be verified against PCB clearance constraints.
• Product Status: The substitute is active and in stock (51,110 pcs), ensuring long-term availability and supply chain continuity.
• Compliance: Both components maintain REACH Unaffected status and MSL 1 rating, supporting standard manufacturing and storage practices.

Frequently Asked Questions (FAQ)

Q: Can the MLZ2012M100HT000 directly replace the GLFR2012T100M-LR in all applications?

A: Direct replacement is possible only if the application current requirement does not exceed 300 mA and the increased DC resistance (680mOhm versus 300mOhm) is acceptable for circuit performance. Applications designed for the full 500 mA rating require circuit re-evaluation.

Q: What is the impact of the higher DC resistance in the substitute?

A: The 680mOhm DCR in the MLZ2012T100HT000 compared to 300mOhm in the original will increase power dissipation proportionally to the square of the current. For a 300 mA application, this results in approximately 61.2 mW dissipation versus 45 mW in the original at equivalent current levels. Thermal design must account for this increase.

Q: Are the packages physically compatible?

A: Both components use the 0805 (2012 Metric) package with identical footprint dimensions (0.079" L x 0.049" W). The substitute is 0.004" taller (0.057" versus 0.053" seated height), which must be verified against PCB assembly clearance requirements.

Q: Does the extended temperature range of the substitute provide any advantage?

A: The MLZ2012M100HT000 operates from -55°C to 125°C compared to -40°C to 105°C for the original. This extended range provides additional thermal margin for applications operating at temperature extremes, though it does not compensate for current or resistance limitations.

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

A: The substitute has an Isat of 200mA versus 100mA in the original. Saturation current defines the point at which the inductor begins to lose inductance due to core saturation. The higher Isat in the substitute provides better performance in current-limited or transient current scenarios, but does not affect steady-state operation below the rated current.

Q: Is the substitute suitable for high-frequency applications?

A: The substitute is specified with an inductance test frequency of 2 MHz. Both components are shielded inductors suitable for standard RF and switching applications within their respective current ratings.