47471SC Equivalent & Substitute Parts

Part Overview

The 47471SC is a 470 µH shielded wirewound inductor manufactured by Murata Power Solutions Inc., designed for surface mount applications with a current rating of 580 mA and maximum DC resistance of 1.33Ohm. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The part operates across a temperature range of -40°C to 85°C and is RoHS compliant with unlimited moisture sensitivity rating.

Substiute Parts

47471SC

Murata Power Solutions Inc.In Stock: 83147471SC Datasheet

Current PartRFQ

74477124

Würth ElektronikIn Stock: 645074477124 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 47471SC is determined by the following critical parameters:

• Inductance Value: 470 µH with ±20% tolerance
• Current Rating: Minimum 580 mA to maintain functional equivalence
• DC Resistance: Maximum 1.33Ohm to ensure performance within design specifications
• Shielding: Shielded construction required
• Mounting Type: Surface mount configuration
• Package Compatibility: Nonstandard, 4 lead form factor

The Würth Elektronik 74477124 qualifies as a substitute based on matching inductance value, exceeding current rating capability (640 mA), superior DC resistance performance (770mOhm), shielded construction, and compatible surface mount packaging. The substitute maintains the same inductance tolerance specification and operates within an extended temperature range.

Parameter Comparison

Engineering Selection Recommendations

The 74477124 from Würth Elektronik is qualified as a direct substitute for the obsolete 47471SC. Selection is supported by the following factors:

• Product Status: The 74477124 maintains active production status, ensuring long-term availability and supply chain stability compared to the obsolete 47471SC.
• Compliance Certifications: Both parts maintain RoHS compliance. The 74477124 carries ROHS3 compliance and AEC-Q200 automotive qualification, providing enhanced reliability documentation.
• Electrical Performance: The substitute exceeds the original part specifications with higher current rating (640 mA vs. 580 mA) and lower DC resistance (770mOhm vs. 1.33Ohm), resulting in improved thermal performance and reduced power dissipation.
• Temperature Range: The extended operating range (-40°C to 125°C) of the 74477124 provides additional margin for applications requiring elevated temperature operation.
• Environmental Compliance: Both parts maintain REACH unaffected status and identical moisture sensitivity ratings.

Frequently Asked Questions (FAQ)

Q: Can the 74477124 be used as a direct replacement for the 47471SC in existing designs?

A: Yes. The 74477124 meets or exceeds all critical electrical parameters of the 47471SC, including inductance value, current rating, and DC resistance specifications. Physical dimensions are comparable (12.00mm vs. 12.20mm), and both utilize nonstandard 4-lead surface mount packaging.

Q: What are the key differences between these two inductors?

A: The primary differences are product status (active vs. obsolete), DC resistance (770mOhm vs. 1.33Ohm), current saturation rating (800mA vs. not specified), operating temperature range (-40°C to 125°C vs. -40°C to 85°C), and core material specification (ferrite drum core vs. unspecified). The 74477124 provides superior electrical performance with lower losses.

Q: Are there any package compatibility concerns?

A: Both parts use nonstandard 4-lead surface mount packages with similar footprints. The 74477124 is slightly taller (6.00mm vs. 5.00mm seated height). PCB layout and clearance verification is recommended for height-constrained applications.

Q: What compliance certifications apply to the substitute part?

A: The 74477124 carries RoHS3 compliance, AEC-Q200 automotive qualification, REACH unaffected status, and EAR99 export classification. These certifications match or exceed the compliance profile of the original 47471SC.

Q: Is the substitute part available in the same packaging format?

A: The 74477124 is supplied in Tape & Reel (TR) format, which is standard for production environments. The original 47471SC packaging format is not specified in the available data. Reel compatibility should be confirmed with your procurement process.