Murata Power Solutions 84472C Fixed Inductor - Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions 84472C is a 4.7 µH unshielded wirewound inductor rated for 1.3 A continuous current with a maximum DC resistance of 150mOhm. This component is designed for surface mount applications in compact form factors and is currently in active production status. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this product category.

Substiute Parts

84472C

Murata Power SolutionsIn Stock: 85884472C Datasheet

Current PartRFQ

SDR0403-4R7ML

Bourns Inc.In Stock: 1805SDR0403-4R7ML Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Murata 84472C is determined by the following critical parameters:

• Inductance Value: Must be 4.7 µH with ±20% tolerance
• Current Rating: Substitute must support minimum 1.3 A continuous current
• DC Resistance: Lower or equal DCR values are acceptable; higher values may impact thermal performance
• Shielding Configuration: Unshielded topology must be maintained
• Mounting Type: Surface mount configuration required
• Operating Temperature: Must support -40°C ~ 125°C range
• Compliance: RoHS3 compliance required

The Bourns SDR0403-4R7ML meets these substitution criteria with improved electrical characteristics including higher current rating (1.7 A) and lower DC resistance (94mOhm), while maintaining identical inductance value, unshielded configuration, and temperature operating range.

Parameter Comparison

Engineering Selection Recommendations

Both the Murata 84472C and Bourns SDR0403-4R7ML are active production components with full RoHS3 compliance and REACH unaffected status. The Bourns SDR0403-4R7ML substitute provides superior electrical performance through higher current saturation capability (2.6 A) and reduced DC resistance (94mOhm versus 150mOhm), resulting in lower power dissipation in equivalent circuit applications. Both components maintain identical inductance specifications, temperature operating range, and unshielded configuration. Component selection should be based on circuit current requirements, thermal budget constraints, and PCB layout considerations specific to the application.

Frequently Asked Questions (FAQ)

Q: Can the Bourns SDR0403-4R7ML directly replace the Murata 84472C in existing designs?

A: Yes, the Bourns part maintains identical inductance value (4.7 µH), tolerance (±20%), operating temperature range (-40°C ~ 125°C), and unshielded configuration. The higher current rating and lower DC resistance of the Bourns component provide improved performance margins.

Q: What are the physical dimension differences between these parts?

A: The Murata 84472C measures 0.177" L x 0.130" W x 0.114" H (4.50mm x 3.30mm x 2.90mm). The Bourns SDR0403-4R7ML measures 0.177" L x 0.157" W x 0.138" H (4.50mm x 4.00mm x 4.60mm). Length is identical; width and height are slightly larger on the Bourns component. PCB layout verification is required for space-constrained applications.

Q: Are there compliance or certification differences between these inductors?

A: Both components are RoHS3 compliant, REACH unaffected, and classified under identical HTSUS code 8504.50.4000. No compliance differentiation exists between the two parts.

Q: What is the significance of the lower DC resistance in the Bourns substitute?

A: Lower DC resistance (94mOhm versus 150mOhm) reduces resistive power loss in the inductor, resulting in lower operating temperature and improved efficiency in power conversion and filtering applications.

Q: Are both parts available in tape and reel packaging?

A: Yes, both the Murata 84472C and Bourns SDR0403-4R7ML are supplied in tape and reel (TR) packaging suitable for automated assembly processes.