34472C Shielded Wirewound Inductor Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions 34472C is a 4.7 µH shielded wirewound inductor rated for 1.3 A continuous current with a maximum DC resistance of 100mOhm. This component is classified as Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for surface mount applications requiring shielded inductors in the 4.7 µH range.

Substiute Parts

34472C

Murata Power Solutions Inc.In Stock: 125534472C Datasheet

Current PartRFQ

SRR4018-4R7Y

Bourns Inc.In Stock: 3199SRR4018-4R7Y Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 34472C is determined by the following critical parameters:

• Inductance value of 4.7 µH within ±30% tolerance
• Shielded construction to maintain electromagnetic isolation
• Surface mount packaging compatible with standard PCB assembly processes
• Current rating sufficient to support 1.3 A operation
• DC resistance within acceptable limits for the application
• Operating temperature range of -40°C ~ 125°C
• ROHS3 compliance and REACH unaffected status

The Bourns SRR4018-4R7Y meets these substitution criteria with equivalent inductance, shielding, temperature range, and compliance certifications. The substitute part provides higher current rating (1.72 A) and lower DC resistance (82mOhm), making it suitable for applications where the original part is unavailable.

Parameter Comparison

Engineering Selection Recommendations

Both the 34472C and SRR4018-4R7Y are Active product status components with ROHS3 compliance and REACH unaffected status, meeting regulatory requirements for industrial and commercial applications. The Bourns SRR4018-4R7Y substitute provides improved electrical performance with higher current rating and lower DC resistance while maintaining identical inductance value and temperature operating range. Selection between these parts should be based on availability, cost, and specific application current requirements within the 1.3 A to 1.72 A range.

Frequently Asked Questions (FAQ)

Q: Can the SRR4018-4R7Y directly replace the 34472C in all applications?

A: Yes, provided the application current requirement does not exceed 1.3 A. The substitute part's higher current rating (1.72 A) and lower DC resistance (82mOhm) make it suitable for equivalent or higher current applications. Both parts maintain identical inductance, shielding, temperature range, and compliance certifications.

Q: Are there physical dimension differences between these parts?

A: The 34472C has dimensions of 0.205" L x 0.205" W (5.20mm x 5.20mm), while the SRR4018-4R7Y measures 0.189" L x 0.189" W (4.80mm x 4.80mm). Both have identical seated height of 0.079" (2.00mm). PCB layout verification is required to confirm mechanical compatibility.

Q: Do both parts use the same core material?

A: The 34472C core material is not specified in the technical data. The SRR4018-4R7Y uses a ferrite drum core. Both are wirewound shielded inductors with equivalent electrical performance at the specified inductance and frequency range.

Q: What is the significance of the ±30% inductance tolerance?

A: The ±30% tolerance indicates the acceptable range of inductance variation from the nominal 4.7 µH value. Both parts share this tolerance specification, ensuring consistent performance across production batches within the 3.29 µH to 6.11 µH range.

Q: Are both parts suitable for high-frequency applications?

A: The SRR4018-4R7Y specifies a self-resonant frequency of 55MHz and Q factor of 8 @ 7.96MHz. The 34472C self-resonant frequency is not provided. For applications requiring specific high-frequency performance characteristics, the SRR4018-4R7Y data sheet should be consulted.