34L152C Equivalent & Substitute Parts

Part Overview

The 34L152C is a 1.5 µH shielded wirewound inductor manufactured by Murata Power Solutions Inc., rated for 1.65 A with a maximum DC resistance of 85mOhm. This component is designed for surface mount applications in the 3400L series. The part is currently obsolete, making identification of compatible substitute components essential for ongoing design support, production continuity, and system maintenance.

Substiute Parts

34L152C

Murata Power Solutions Inc.In Stock: 106934L152C Datasheet

Current PartRFQ

SRR4011-1R5YL

Bourns Inc.In Stock: 1164SRR4011-1R5YL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 34L152C is determined by strict equivalence across the following critical parameters:

Inductance Value: Both the main part and substitute must maintain 1.5 µH with ±30% tolerance to ensure circuit performance.

Shielding Requirement: The shielded construction is mandatory to prevent electromagnetic interference in the target application.

Current Rating: The substitute must support the circuit's current demands. The 34L152C is rated for 1.65 A; the substitute SRR4011-1R5YL is rated for 2.3 A, providing adequate margin.

DC Resistance: The 34L152C specifies 85mOhm maximum. The substitute SRR4011-1R5YL provides 56mOhm maximum, which is lower and therefore acceptable for thermal and efficiency considerations.

Operating Temperature Range: Both parts support -40°C ~ 125°C operation, ensuring thermal compatibility.

Surface Mount Configuration: Both components are surface mount devices suitable for automated assembly.

Compliance Standards: Both parts are RoHS compliant and REACH unaffected, meeting regulatory requirements.

Parameter Comparison

Engineering Selection Recommendations

The SRR4011-1R5YL from Bourns Inc. is a direct functional equivalent to the obsolete 34L152C. Selection of this substitute is based on the following engineering criteria:

Electrical Equivalence: Both inductors provide 1.5 µH inductance with identical ±30% tolerance. The substitute's higher current rating (2.3 A vs. 1.65 A) and lower DC resistance (56mOhm vs. 85mOhm) provide improved performance margins without circuit modification.

Regulatory Compliance: The SRR4011-1R5YL meets ROHS3 compliance and REACH requirements, satisfying current environmental standards. Both components carry MSL 1 rating, indicating unlimited shelf life under controlled storage.

Physical Compatibility: The substitute's footprint (4.80mm x 4.80mm) is slightly smaller than the original (5.20mm x 5.20mm), with comparable height (1.30mm vs. 1.20mm). PCB layout verification is required to confirm pad compatibility and clearance.

Availability: The SRR4011-1R5YL is currently in active production with confirmed inventory, ensuring supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can the SRR4011-1R5YL directly replace the 34L152C without circuit modification?

A: The SRR4011-1R5YL meets all critical electrical parameters (inductance, tolerance, current rating, DC resistance, operating temperature, and shielding). Physical footprint verification is required due to minor dimensional differences (4.80mm vs. 5.20mm). PCB layout compatibility must be confirmed before implementation.

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

A: The SRR4011-1R5YL specifies 56mOhm maximum compared to 85mOhm maximum in the 34L152C. Lower DC resistance reduces resistive losses and heat generation, improving circuit efficiency. This represents an enhancement rather than a limitation.

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

A: Both parts are RoHS compliant and REACH unaffected. The substitute carries ROHS3 certification, which represents a more recent compliance standard. Both maintain MSL 1 rating for moisture sensitivity.

Q: What should be verified before implementing this substitution?

A: Confirm PCB pad layout compatibility with the substitute's 4.80mm x 4.80mm footprint. Verify that the 1.30mm seated height does not create clearance conflicts. Validate that the lower DC resistance does not introduce unintended circuit behavior in current-limiting or thermal management applications.

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

A: The 34L152C is supplied in nonstandard packaging. The SRR4011-1R5YL is available in Tape & Reel (TR) format, which is standard for automated assembly. Confirm packaging compatibility with your procurement and assembly processes.