GLF2012T101K Equivalent & Substitute Parts

Part Overview

The GLF2012T101K is a 100 µH shielded drum core wirewound inductor manufactured by TDK Corporation, rated for 110 mA continuous current with 4Ω DC resistance in a 0805 (2012 Metric) surface mount package. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing production and maintenance applications. Substitute parts must maintain electrical performance within the specified inductance, current rating, and impedance parameters while accommodating packaging and thermal requirements.

Substiute Parts

GLF2012T101K

TDK CorporationIn Stock: 7218GLF2012T101K Datasheet

Current PartRFQ

LBR2012T101K

Taiyo YudenIn Stock: 1811LBR2012T101K Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the GLF2012T101K is determined by the following critical parameters:

• Inductance Value: 100 µH ±10% tolerance is mandatory for functional equivalence
• DC Resistance: 4Ω specification must be maintained to preserve circuit impedance characteristics
• Package / Case: 0805 (2012 Metric) surface mount package ensures mechanical and electrical compatibility with existing PCB layouts
• Current Rating: Minimum 110 mA continuous current capability required for circuit operation
• Operating Temperature: -20°C ~ 105°C range or broader compatibility
• Mounting Type: Surface mount configuration required for automated assembly compatibility

The LBR2012T101K from Taiyo Yuden meets the core electrical specifications (100 µH inductance, 4Ω DCR, 0805 package) but presents a reduced current rating of 50 mA, which falls below the original 110 mA specification. This represents a functional limitation that must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The LBR2012T101K presents a partial electrical match with significant operational constraints:

Electrical Compatibility: The inductance value (100 µH) and DC resistance (4Ω) are identical, satisfying core circuit impedance requirements. Package dimensions and surface mount configuration ensure PCB layout compatibility.

Current Rating Limitation: The 50 mA current rating of the LBR2012T101K is 55% below the original 110 mA specification. Selection of this substitute is permissible only in applications where actual circuit current does not exceed 50 mA continuous operation.

Shielding Difference: The LBR2012T101K is unshielded versus the shielded design of the GLF2012T101K. In circuits sensitive to electromagnetic interference or requiring controlled magnetic field containment, this difference may impact performance.

Compliance Status: The LBR2012T101K carries ROHS3 compliance certification and REACH unaffected status, supporting regulatory requirements for new production. Both components are classified as either obsolete or not for new designs, indicating limited long-term availability.

Temperature Range: The LBR2012T101K supports -40°C ~ 105°C operation, providing extended low-temperature capability compared to the -20°C ~ 105°C range of the original part.

Frequently Asked Questions (FAQ)

Q: Can the LBR2012T101K directly replace the GLF2012T101K in all applications?

A: Direct replacement is limited by current rating. The LBR2012T101K is suitable only for circuits operating at 50 mA or below. Applications requiring the full 110 mA rating of the original part require alternative sourcing or circuit redesign.

Q: What is the impact of the shielding difference?

A: The GLF2012T101K shielded design contains magnetic fields within the component, reducing radiated interference. The LBR2012T101K unshielded configuration allows magnetic field dispersion. In noise-sensitive circuits or high-density PCB layouts, this difference may require electromagnetic compatibility evaluation.

Q: Are the physical dimensions compatible?

A: Both components use the 0805 (2012 Metric) package with identical length (2.00mm) and width (1.25mm). Height differs slightly: GLF2012T101K maximum 1.35mm versus LBR2012T101K maximum 1.45mm. This 0.10mm difference is within standard PCB assembly tolerances.

Q: What is the significance of the product status classifications?

A: Both parts are classified as end-of-life or restricted from new designs. The GLF2012T101K is obsolete with no further manufacturing. The LBR2012T101K is not recommended for new designs, indicating limited future availability. Long-term supply planning should identify alternative active-production inductors with equivalent specifications.

Q: How do the saturation current specifications compare?

A: The GLF2012T101K specifies 30 mA saturation current. The LBR2012T101K saturation current is not provided in available documentation. Saturation current defines the threshold at which inductance begins to degrade under high current conditions. This parameter should be obtained from the manufacturer for precise circuit analysis.