GLF2012T100K Equivalent & Substitute Parts

Part Overview

The GLF2012T100K is a 10 µH shielded drum core wirewound inductor manufactured by TDK Corporation, designed for surface mount applications in the 0805 (2012 Metric) package. This component is rated for 360 mA continuous current with 360mOhm DC resistance and operates across the temperature range of -20°C to 105°C. The part carries an obsolete product status, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity.

Substiute Parts

GLF2012T100K

TDK CorporationIn Stock: 1622GLF2012T100K Datasheet

Current PartRFQ

LBR2012T100K

Taiyo YudenIn Stock: 23201LBR2012T100K Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the GLF2012T100K is determined by the following critical parameters:

• Inductance Value: Must be 10 µH with ±10% tolerance
• Package Compatibility: Must be 0805 (2012 Metric) surface mount
• DC Resistance: Must match 360mOhm specification
• Physical Dimensions: Must accommodate 0805 form factor (2.00mm L x 1.25mm W maximum)
• Moisture Sensitivity: MSL rating of 1 or better

The LBR2012T100K from Taiyo Yuden meets the core electrical and mechanical compatibility criteria. However, this substitute exhibits a reduced current rating (150 mA versus 360 mA) and lacks shielding, representing a functional trade-off that requires circuit-level evaluation.

Parameter Comparison

Engineering Selection Recommendations

The LBR2012T100K presents a viable substitute path based on matching inductance value, DC resistance, package form factor, and moisture sensitivity rating. Both components share identical tolerance specifications and MSL classification.

Key considerations for selection:

• Current Derating: The LBR2012T100K current rating of 150 mA is 58% lower than the GLF2012T100K specification. Circuit designs operating at or near 360 mA cannot use this substitute without thermal and reliability analysis.
• Shielding Differential: The GLF2012T100K provides shielded construction; the LBR2012T100K is unshielded. Applications requiring EMI containment or sensitive to magnetic field coupling must account for this architectural difference.
• Temperature Range: The LBR2012T100K extends the lower operating limit to -40°C, providing broader environmental coverage than the original part.
• Product Status: Both parts carry end-of-life or restricted design status, indicating limited long-term availability. Extended procurement planning is necessary.

Frequently Asked Questions (FAQ)

Q: Can the LBR2012T100K directly replace the GLF2012T100K in all applications?

A: Direct replacement is limited by current rating and shielding differences. The LBR2012T100K is suitable only for circuits operating at 150 mA or below and where unshielded construction does not compromise EMI performance or signal integrity.

Q: What is the impact of the shielding difference?

A: The GLF2012T100K shielded design contains magnetic field radiation, reducing coupling to adjacent circuit elements. The LBR2012T100K unshielded construction may introduce crosstalk in sensitive analog or RF circuits. Board layout and spacing analysis is required for unshielded substitution.

Q: Are the physical dimensions compatible?

A: Both components use the 0805 (2012 Metric) package with identical footprint dimensions (2.00mm L x 1.25mm W). Height differences (1.35mm versus 1.45mm seated) are within standard PCB assembly tolerances and do not affect placement compatibility.

Q: What does "Not For New Designs" status mean for the substitute part?

A: This designation indicates the manufacturer is discontinuing the product line. While current inventory exists, long-term availability cannot be assured. New designs should evaluate alternative inductors from active product families.

Q: How do the DC resistance values compare?

A: Both parts specify 360mOhm DC resistance, ensuring equivalent power dissipation and thermal characteristics at matched current levels. This parameter alignment supports functional substitution within current rating constraints.