Murata Power Solutions 472R2SC Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions 472R2SC is a 2.2 µH shielded wirewound inductor rated for 7 A continuous current with a maximum DC resistance of 8.5 mOhm. This component is designed for surface mount applications in nonstandard 4-lead packaging. The part is currently obsolete, making identification of suitable substitute components essential for ongoing production and maintenance applications.

Substiute Parts

472R2SC

Murata Power SolutionsIn Stock: 755472R2SC Datasheet

Current PartRFQ

744771002

Würth ElektronikIn Stock: 3278744771002 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 472R2SC is determined by the following critical electrical and mechanical parameters:

• Inductance Value: Must be 2.2 µH to maintain circuit functionality
• Current Rating: Substitute must support minimum 7 A; higher ratings provide design margin
• DC Resistance: Must not exceed 8.5 mOhm to ensure acceptable power dissipation characteristics
• Shielding: Must be shielded to prevent electromagnetic interference
• Surface Mount Configuration: Substitute must be compatible with surface mount assembly processes
• Operating Temperature: Substitute must cover the -40°C ~ 85°C range minimum
• Regulatory Compliance: RoHS compliance required for modern supply chains

The Würth Elektronik 744771002 qualifies as a substitute based on matching inductance, shielding, surface mount compatibility, and superior electrical performance characteristics within the specified parameter envelope.

Parameter Comparison

Engineering Selection Recommendations

The Würth Elektronik 744771002 is the qualified substitute for the obsolete Murata 472R2SC based on the following factors:

Electrical Compatibility: Both components maintain the 2.2 µH inductance specification. The 744771002 provides superior performance with a 10 A current rating versus the original 7 A rating, and achieves lower DC resistance at 8 mOhm maximum compared to 8.5 mOhm. The tighter ±20% tolerance on the substitute improves circuit predictability.

Thermal Performance: The substitute extends the operating temperature range to -40°C ~ 125°C, providing additional margin beyond the original -40°C ~ 85°C specification.

Regulatory Status: Both components are RoHS compliant. The substitute carries ROHS3 compliance and maintains REACH unaffected status, ensuring compatibility with current regulatory requirements.

Supply Availability: The 744771002 is active in production with 3,264 pieces in stock, whereas the original part is obsolete with limited remaining inventory.

Packaging Consideration: Both components use nonstandard 4-lead surface mount packages. Physical dimensions are comparable (12.20mm x 12.20mm for 472R2SC versus 12.00mm x 12.00mm for 744771002), with height differences of 5.00mm versus 6.00mm respectively. PCB layout verification is required to confirm mechanical fit.

Frequently Asked Questions (FAQ)

Q: Can the 744771002 directly replace the 472R2SC without circuit modifications?

A: The 744771002 meets all critical electrical parameters for substitution: matching 2.2 µH inductance, shielded configuration, and surface mount compatibility. However, physical dimensions differ slightly (height 6.00mm versus 5.00mm). PCB layout and clearance verification is necessary before implementation.

Q: Why is the current rating difference (10 A versus 7 A) acceptable?

A: A higher current rating on the substitute provides additional design margin and thermal headroom. The circuit will operate within the substitute's specifications if the original design operated within the 7 A limit of the 472R2SC.

Q: What is the impact of the ±20% tolerance on the 744771002 versus ±30% on the 472R2SC?

A: The tighter tolerance on the substitute improves inductance value consistency, which benefits circuit performance and reduces variability in applications sensitive to inductance precision.

Q: Are there any compliance or certification differences between these parts?

A: Both components are RoHS compliant and REACH unaffected. The 744771002 carries AEC-Q200 automotive qualification and ROHS3 compliance, providing additional assurance for demanding applications.

Q: What packaging format is the 744771002 supplied in?

A: The 744771002 is supplied in Tape & Reel (TR) format, standard for high-volume surface mount assembly. Confirm your assembly process compatibility with this packaging format.