74479288147 Equivalent & Substitute Parts Reference

Part Overview

The Würth Elektronik 74479288147 is a 470 nH shielded molded inductor rated for 3.1 A continuous current with a maximum DC resistance of 34 mOhm. This component is designed for surface mount applications in the 1008 (2520 Metric) package format. The part maintains active product status and is RoHS3 compliant, making it suitable for modern electronic assemblies requiring compact, shielded inductive filtering or energy storage in power conversion and signal conditioning circuits. Equivalent substitute parts are available from Eaton Electronics Division with improved electrical performance characteristics while maintaining package compatibility and core functional specifications.

Substiute Parts

74479288147

Würth ElektronikIn Stock: 181974479288147 Datasheet

Current PartRFQ

MPI2512V2-R47-R

Eaton - Electronics DivisionIn Stock: 4297MPI2512V2-R47-R Datasheet

MFR RecommendedRFQ

MPIA2512V2-R47-R

Eaton - Electronics DivisionIn Stock: 2925MPIA2512V2-R47-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 74479288147 are qualified based on the following critical parameters:

• Inductance Value: 470 nH (exact match required)
• Package / Case: 1008 (2520 Metric) (mechanical compatibility)
• Mounting Type: Surface Mount (assembly process compatibility)
• Shielding: Shielded (electromagnetic performance requirement)
• Operating Temperature Range: -40°C ~ 125°C (thermal envelope)
• Self Resonant Frequency: 100 MHz (frequency response characteristic)

The substitute parts MPI2512V2-R47-R and MPIA2512V2-R47-R from Eaton Electronics Division meet all critical substitution criteria. Both parts maintain identical inductance, package dimensions, and operating temperature specifications. The substitutes offer improved electrical performance with higher current ratings (4.9 A vs. 3.1 A) and lower DC resistance (23 mOhm Max vs. 34 mOhm Max), providing enhanced thermal efficiency and current handling capability within the same physical footprint.

Parameter Comparison

Engineering Selection Recommendations

Both Eaton substitute parts are qualified alternatives to the 74479288147 based on active product status and regulatory compliance. The MPIA2512V2-R47-R offers additional qualification through AEC-Q200 automotive-grade certification and iron powder core material specification, making it suitable for applications requiring automotive or high-reliability standards. The MPI2512V2-R47-R provides equivalent electrical performance without automotive qualification.

Selection between the main part and substitutes should account for the following factors derived from provided specifications:

• Current Margin: Substitute parts provide 58% higher current rating (4.9 A vs. 3.1 A), reducing thermal stress in applications operating near rated current limits.
• DC Resistance: Substitute parts offer 32% lower DC resistance (23 mOhm vs. 34 mOhm), resulting in reduced power dissipation and improved thermal performance.
• Inductance Tolerance: Substitute parts feature tighter tolerance (±20% vs. ±30%), providing improved circuit performance predictability.
• Height Clearance: The main part offers 0.25mm lower profile (1.00mm vs. 1.25mm), which may be critical in space-constrained applications.

Frequently Asked Questions (FAQ)

Q: Can MPI2512V2-R47-R or MPIA2512V2-R47-R be used as direct replacements for 74479288147?

A: Yes, both Eaton parts are direct substitutes. All three components share identical inductance (470 nH), package format (1008 / 2520 Metric), mounting type (surface mount), shielding configuration, operating temperature range (-40°C ~ 125°C), and self-resonant frequency (100 MHz). The substitute parts maintain full mechanical and electrical compatibility.

Q: What are the differences between MPI2512V2-R47-R and MPIA2512V2-R47-R?

A: Both parts provide identical electrical specifications (470 nH, 4.9 A, 23 mOhm DCR). The MPIA2512V2-R47-R includes molded construction with iron powder core material and AEC-Q200 automotive qualification, while the MPI2512V2-R47-R does not specify these features. Selection depends on application requirements for automotive-grade reliability.

Q: Will the substitute parts fit in the same PCB footprint?

A: The lateral dimensions are identical (0.098" L x 0.079" W / 2.50mm x 2.00mm). The substitute parts are 0.25mm taller (1.25mm vs. 1.00mm seated height). Verify clearance in applications with height constraints before substitution.

Q: Are there any compliance or certification differences?

A: All three parts are RoHS compliant and REACH unaffected. The MPIA2512V2-R47-R carries AEC-Q200 automotive qualification, while the 74479288147 and MPI2512V2-R47-R do not specify this certification. All parts maintain MSL 1 (unlimited moisture sensitivity level).

Q: How do the electrical performance characteristics compare?

A: The substitute parts provide superior electrical performance: 58% higher continuous current rating (4.9 A vs. 3.1 A), 12% higher saturation current (6.7 A vs. 6 A), 32% lower DC resistance (23 mOhm vs. 34 mOhm), and tighter inductance tolerance (±20% vs. ±30%). These improvements reduce thermal dissipation and enhance circuit stability.