GLF2012T470K Equivalent & Substitute Parts

Part Overview

The GLF2012T470K 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 170 mA continuous current with 1.7Ω DC resistance and operates across the temperature range of -20°C to 105°C. The product is currently obsolete, necessitating identification of functionally equivalent alternatives for ongoing production and maintenance applications.

Substiute Parts

GLF2012T470K

TDK CorporationIn Stock: 900GLF2012T470K Datasheet

Current PartRFQ

LBR2012T470K

Taiyo YudenIn Stock: 6322LBR2012T470K Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the GLF2012T470K is determined by the following critical parameters:

• Inductance Value: Must be 47 µH with ±10% tolerance
• Package Compatibility: Must be 0805 (2012 Metric) surface mount package
• DC Resistance: Must be 1.7Ω to maintain circuit performance
• Current Rating: Substitute must support minimum 170 mA continuous current
• Physical Dimensions: Must match 0805 footprint (2.00mm L × 1.25mm W)

The LBR2012T470K from Taiyo Yuden meets the inductance, tolerance, DC resistance, and package requirements. However, the current rating of 75 mA is below the original specification of 170 mA, representing a functional limitation in this substitute relationship.

Parameter Comparison

Engineering Selection Recommendations

The LBR2012T470K presents a partial functional equivalent with significant design considerations:

Matching Criteria: The substitute maintains identical inductance (47 µH), tolerance (±10%), DC resistance (1.7Ω), and 0805 package footprint. Both components share MSL 1 classification and REACH unaffected status.

Limiting Factor: The current rating differential is substantial. The LBR2012T470K is rated for 75 mA continuous current, whereas the original GLF2012T470K supports 170 mA. This 56% reduction in current capacity restricts the substitute to applications with lower current demands.

Additional Differences: The LBR2012T470K is unshielded compared to the shielded design of the original part, which may introduce electromagnetic interference considerations in sensitive circuit environments. The substitute also exhibits a slightly greater seated height (1.45mm vs. 1.35mm) and extends the lower operating temperature limit to -40°C.

Compliance Status: The LBR2012T470K carries ROHS3 compliance certification, whereas the original part's RoHS status is not specified. Both components are classified as not suitable for new designs, indicating their status within manufacturer product portfolios.

Frequently Asked Questions (FAQ)

Q: Can the LBR2012T470K directly replace the GLF2012T470K in all applications?

A: Direct replacement is limited by current rating. The LBR2012T470K supports only 75 mA versus the original 170 mA specification. Substitution is valid only for circuits operating at or below 75 mA continuous current.

Q: What is the significance of shielded versus unshielded construction?

A: The original GLF2012T470K features shielded drum core construction, which reduces electromagnetic radiation and susceptibility to external fields. The LBR2012T470K is unshielded. In applications requiring EMI suppression or operating in electromagnetically noisy environments, this difference may affect circuit performance.

Q: Are the physical dimensions compatible for PCB layout?

A: Both components use the 0805 (2012 Metric) package with identical footprint dimensions (2.00mm × 1.25mm). The seated height difference (1.35mm vs. 1.45mm) is minimal and typically accommodated within standard PCB assembly clearances.

Q: What compliance certifications apply to each part?

A: The LBR2012T470K is ROHS3 compliant. Both components are REACH unaffected and carry EAR99 ECCN classification. The original part's RoHS status is not specified in available documentation.

Q: How do the operating temperature ranges compare?

A: The GLF2012T470K operates from -20°C to 105°C. The LBR2012T470K extends the lower limit to -40°C while maintaining the same upper limit. For applications requiring operation below -20°C, the substitute provides enhanced low-temperature capability.