GLF201208T2R2M Equivalent & Substitute Parts

Part Overview

The GLF201208T2R2M is a 2.2 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 350 mA continuous current with a DC resistance of 560 mOhm and operates across the temperature range of -20°C to 105°C. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.

Substiute Parts

GLF201208T2R2M

TDK CorporationIn Stock: 736GLF201208T2R2M Datasheet

Current PartRFQ

LBR2012T2R2M

Taiyo YudenIn Stock: 4220LBR2012T2R2M Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the GLF201208T2R2M is determined by the following critical parameters:

• Inductance Value: Must be 2.2 µH with ±20% tolerance
• Package / Case: Must be 0805 (2012 Metric) for mechanical and electrical compatibility
• Mounting Type: Must be Surface Mount
• Core Material: Ferrite drum core construction
• Current Rating: Must support minimum 350 mA continuous current
• DC Resistance: Lower DCR values are acceptable; higher values may impact circuit performance
• Shielding: Shielded construction preferred to maintain electromagnetic isolation

The LBR2012T2R2M from Taiyo Yuden meets the core inductance, package, and mounting requirements. However, it operates as an unshielded variant with reduced current rating (260 mA) and significantly lower DC resistance (130 mOhm), requiring circuit-level evaluation for specific applications.

Parameter Comparison

Engineering Selection Recommendations

The LBR2012T2R2M presents a viable substitute for the GLF201208T2R2M based on matching inductance value, tolerance, package footprint, and core material. Selection considerations include:

Current Capacity: The substitute part is rated for 260 mA continuous current, which is 90 mA lower than the original specification. Applications requiring the full 350 mA rating must be re-evaluated or alternative parts sourced.

DC Resistance: The LBR2012T2R2M exhibits significantly lower DC resistance (130 mOhm versus 560 mOhm). This reduction affects power dissipation characteristics and may alter circuit behavior in current-limiting or impedance-sensitive applications.

Shielding: The substitute is unshielded, whereas the original is shielded. In circuits sensitive to electromagnetic interference or requiring isolation from adjacent components, this difference may necessitate additional design considerations.

Temperature Range: The substitute supports an extended lower temperature limit (-40°C versus -20°C), providing broader operational capability in cold environments.

Product Status: Both parts carry end-of-life designations (Obsolete and Not For New Designs), indicating limited long-term availability. Procurement planning should account for inventory constraints.

Frequently Asked Questions (FAQ)

Q: Can the LBR2012T2R2M directly replace the GLF201208T2R2M in all applications?

A: Direct replacement is possible only in applications where the 260 mA current rating is sufficient and the unshielded construction does not introduce electromagnetic compatibility issues. The lower DC resistance may also affect circuit performance in applications where the original higher resistance was intentional.

Q: What is the impact of the shielding difference?

A: The GLF201208T2R2M is shielded, reducing radiated emissions and susceptibility to external electromagnetic fields. The LBR2012T2R2M is unshielded, which may increase coupling to adjacent circuit elements. Applications in noise-sensitive environments should evaluate this difference.

Q: Are both parts RoHS compliant?

A: The GLF201208T2R2M status is not specified in the provided data. The LBR2012T2R2M is ROHS3 compliant. Regulatory compliance requirements should be verified against specific application standards.

Q: What is the significance of the DC resistance difference?

A: The 430 mOhm difference in DC resistance (560 mOhm versus 130 mOhm) directly impacts power dissipation and voltage drop across the inductor. In current-limiting circuits or applications where inductor resistance contributes to circuit function, this difference must be evaluated.

Q: Are both parts available in the same packaging format?

A: Yes, both parts are supplied in 0805 (2012 Metric) surface mount packages with identical footprint dimensions (0.079" L x 0.049" W). The LBR2012T2R2M is available in Tape & Reel (TR) packaging, while the GLF201208T2R2M packaging format is not specified.