GLF201208T470M Equivalent & Substitute Parts

Part Overview

The GLF201208T470M is a 47 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 120 mA continuous current with a DC resistance of 5.3 Ohm 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

GLF201208T470M

TDK CorporationIn Stock: 1192GLF201208T470M Datasheet

Current PartRFQ

LBR2012T470K

Taiyo YudenIn Stock: 6322LBR2012T470K Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the GLF201208T470M is determined by the following critical parameters:

• Inductance Value: Must be 47 µH to maintain circuit functionality
• Package / Case: Must be 0805 (2012 Metric) for mechanical and electrical compatibility
• Mounting Type: Must be Surface Mount for PCB assembly compatibility
• Current Rating: Must support minimum 120 mA continuous operation
• Operating Temperature Range: Must encompass or exceed -20°C ~ 105°C
• DC Resistance: Lower DCR values are acceptable as they reduce power dissipation

The LBR2012T470K from Taiyo Yuden meets the core inductance and package requirements. However, the current rating of 75 mA falls below the 120 mA requirement of the original part, representing a significant electrical constraint for direct substitution in applications demanding full current capacity.

Parameter Comparison

Engineering Selection Recommendations

The LBR2012T470K presents a partial electrical match with significant limitations. While both components share identical inductance values and package specifications, the substitute part exhibits a 37.5% reduction in current rating (75 mA versus 120 mA). This constraint restricts the LBR2012T470K to applications where circuit current demands do not exceed 75 mA.

The LBR2012T470K offers advantages in DC resistance (1.7 Ohm versus 5.3 Ohm), resulting in lower power dissipation and improved thermal performance. The tighter inductance tolerance (±10% versus ±20%) provides enhanced precision for frequency-dependent applications. The extended lower temperature limit (-40°C versus -20°C) expands operational range.

Both components carry obsolescence or restricted design status, indicating limited long-term availability. Selection between these parts depends on whether the application current requirement can be satisfied by the 75 mA rating of the substitute.

Frequently Asked Questions (FAQ)

Q: Can the LBR2012T470K directly replace the GLF201208T470M in all applications?

A: Direct replacement is limited by current rating. The LBR2012T470K is suitable only for circuits where the maximum current does not exceed 75 mA. Applications requiring the full 120 mA rating of the original part require alternative sourcing.

Q: What is the impact of the different shielding characteristics?

A: The GLF201208T470M is shielded, while the LBR2012T470K is unshielded. Shielding reduces electromagnetic interference emission and susceptibility. In noise-sensitive applications, the unshielded substitute may require additional circuit-level filtering or layout considerations.

Q: Are there mechanical compatibility concerns between these parts?

A: Both components use the 0805 (2012 Metric) package with identical footprint dimensions (2.00mm L x 1.25mm W). Height differences are minimal (1.35mm versus 1.45mm), presenting no practical assembly constraints.

Q: How do the tolerance specifications affect circuit performance?

A: The GLF201208T470M carries ±20% tolerance, while the LBR2012T470K offers ±10% tolerance. The tighter tolerance of the substitute improves inductance consistency across production batches, beneficial for precision filtering and resonant circuit applications.

Q: What temperature range considerations apply to substitution?

A: The LBR2012T470K extends the lower operating limit to -40°C compared to the original -20°C minimum. Both components support the upper limit of 105°C. Selection depends on whether the application requires operation below -20°C.