34L472C Equivalent & Substitute Parts

Part Overview

The 34L472C is a 4.7 µH shielded wirewound inductor manufactured by Murata Power Solutions Inc., rated for 700 mA continuous current with a maximum DC resistance of 180mOhm. This surface mount component operates across the industrial temperature range of -40°C to 125°C and is classified as obsolete. Due to its obsolete status and limited current availability, identifying compatible substitute components is essential for ongoing design support and production continuity.

Substiute Parts

34L472C

Murata Power Solutions Inc.In Stock: 117134L472C Datasheet

Current PartRFQ

SRR4011-4R7YL

Bourns Inc.In Stock: 6057SRR4011-4R7YL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 34L472C is determined by the following critical parameters:

Inductance Value: 4.7 µH with ±30% tolerance is the primary electrical specification. Substitute components must maintain this inductance value within the specified tolerance band.

Current Rating: The 34L472C is rated for 700 mA. Substitute parts must meet or exceed this current requirement to ensure safe operation without thermal stress or saturation.

DC Resistance: Maximum DCR of 180mOhm establishes the upper limit for resistive losses. Substitute components with lower DCR values are acceptable and provide improved efficiency.

Shielding: The shielded construction is a functional requirement. Substitute parts must maintain electromagnetic shielding to prevent interference in the target application.

Operating Temperature Range: -40°C to 125°C defines the thermal operating envelope. Substitute components must support this full temperature range.

Mounting Type and Package: Surface mount configuration with nonstandard package dimensions requires physical compatibility with the PCB layout.

Compliance Standards: RoHS compliance is mandatory for the substitute component.

The SRR4011-4R7YL from Bourns Inc. meets all these substitution criteria.

Parameter Comparison

Engineering Selection Recommendations

The SRR4011-4R7YL is a direct functional substitute for the 34L472C based on the following engineering criteria:

Electrical Compatibility: Both components provide 4.7 µH inductance with ±30% tolerance. The SRR4011-4R7YL exceeds the current rating requirement with 1.35 A versus the 700 mA specification of the 34L472C, providing additional design margin. The DCR of 165mOhm is lower than the 180mOhm maximum of the original part, resulting in reduced power dissipation.

Thermal and Environmental Compliance: Both components operate across the identical temperature range of -40°C to 125°C and maintain MSL 1 moisture sensitivity rating, ensuring compatibility in the same environmental conditions.

Regulatory Compliance: The SRR4011-4R7YL holds ROHS3 compliance, meeting current regulatory requirements. Both components are REACH unaffected and carry the same ECCN and HTSUS classifications.

Product Availability: The SRR4011-4R7YL is in active production status with established supply channels, addressing the obsolescence of the 34L472C.

Frequently Asked Questions (FAQ)

Q: Can the SRR4011-4R7YL directly replace the 34L472C in existing designs?

A: Yes. Both components share identical inductance values, tolerance specifications, operating temperature ranges, and shielding characteristics. The SRR4011-4R7YL provides higher current rating and lower DC resistance, making it functionally superior for the same application.

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

A: The 34L472C measures 0.205" L x 0.205" W x 0.047" H (5.20mm x 5.20mm x 1.20mm). The SRR4011-4R7YL measures 0.189" L x 0.189" W x 0.051" H (4.80mm x 4.80mm x 1.30mm). Both are nonstandard packages. PCB layout verification is required to confirm physical fit.

Q: Are there compliance or certification differences?

A: Both components are RoHS compliant and REACH unaffected. The SRR4011-4R7YL carries ROHS3 certification, which represents the current regulatory standard. No compliance barriers exist for substitution.

Q: What is the significance of the higher current rating on the SRR4011-4R7YL?

A: The SRR4011-4R7YL is rated for 1.35 A compared to the 34L472C at 700 mA. In applications operating at or below 700 mA, this provides additional thermal margin and extends component life. The saturation current of 1.2A on the SRR4011-4R7YL must be verified against circuit peak current requirements.

Q: How do the DC resistance values affect circuit performance?

A: The SRR4011-4R7YL has a maximum DCR of 165mOhm versus 180mOhm for the 34L472C. Lower DCR reduces resistive losses and heat generation. At 700 mA, the difference is approximately 10.5 mW, which may be significant in thermally constrained applications.

Q: What packaging format is the SRR4011-4R7YL supplied in?

A: The SRR4011-4R7YL is supplied in Tape & Reel (TR) format, suitable for automated assembly processes. Verify reel specifications and handling requirements with your procurement department.