Murata Power Solutions 35152C Fixed Inductor Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions 35152C is a 1.5 µH unshielded wirewound surface mount inductor rated for 6.5 A continuous current with a maximum DC resistance of 19 mOhm. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and procurement continuity. The part operates across an industrial temperature range of -40°C to 125°C and is packaged in a nonstandard 6.80mm × 6.80mm form factor with a seated height of 3.20mm.

Substiute Parts

35152C

Murata Power SolutionsIn Stock: 114635152C Datasheet

Current PartRFQ

744311150

Würth ElektronikIn Stock: 8891744311150 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 35152C is determined by the following critical parameters:

• Inductance Value: Must match 1.5 µH (primary electrical requirement)
• Current Rating: Substitute must meet or exceed 6.5 A to maintain circuit performance
• DC Resistance: Lower DCR values improve efficiency; substitutes with reduced resistance are acceptable
• Tolerance: ±20% or tighter tolerance is acceptable
• Mounting Type: Surface mount configuration required for PCB compatibility
• Temperature Range: Must support minimum -40°C to 125°C operating window
• Package Compatibility: Physical dimensions must accommodate existing PCB footprints or allow minor layout adjustment

The Würth Elektronik 744311150 qualifies as a direct substitute based on matching inductance value, exceeding current rating capability, and maintaining surface mount configuration within compatible physical dimensions.

Parameter Comparison

Engineering Selection Recommendations

The Würth Elektronik 744311150 is qualified as a substitute for the obsolete Murata 35152C based on the following engineering criteria:

Electrical Compatibility: Both components share identical 1.5 µH inductance specifications. The 744311150 provides superior current handling at 11 A versus 6.5 A, with significantly lower DC resistance (6.6 mOhm versus 19 mOhm maximum), resulting in reduced power dissipation and improved thermal performance.

Tolerance and Precision: The 744311150 offers tighter tolerance (±20% versus ±25%), supporting applications requiring improved inductance accuracy.

Temperature Performance: The 744311150 extends the upper operating temperature limit to 150°C, providing additional thermal margin beyond the 35152C specification of 125°C.

Product Status and Availability: The 744311150 maintains active product status with confirmed inventory availability (8865 pcs), ensuring long-term procurement viability compared to the obsolete 35152C.

Compliance and Certifications: The 744311150 carries AEC-Q200 automotive qualification and ROHS3 compliance, meeting stringent reliability and environmental standards.

Physical Considerations: The 744311150 dimensions (7.00mm × 6.90mm × 4.00mm) represent a minor increase from the 35152C (6.80mm × 6.80mm × 3.20mm). PCB layout verification is required to confirm footprint accommodation, particularly for height clearance in space-constrained applications.

Shielding Difference: The 744311150 incorporates shielding versus the unshielded design of the 35152C. Shielded construction reduces electromagnetic interference emission and susceptibility, providing a design advantage in noise-sensitive circuits.

Frequently Asked Questions (FAQ)

Q: Can the Würth Elektronik 744311150 directly replace the Murata 35152C without circuit redesign?

A: The 744311150 is electrically compatible as a substitute. The identical 1.5 µH inductance and superior current rating (11 A versus 6.5 A) support direct functional replacement. However, PCB layout verification is necessary due to minor dimensional differences: the 744311150 is 0.2mm larger in length and width, and 0.8mm taller in seated height. Confirm available PCB clearance before implementation.

Q: What are the key advantages of substituting the 744311150 for the 35152C?

A: The 744311150 provides three primary advantages: (1) Active product status with confirmed long-term availability versus obsolete status; (2) Superior electrical performance with 66% lower DC resistance (6.6 mOhm versus 19 mOhm), reducing power loss and heat generation; (3) Enhanced reliability through AEC-Q200 qualification and ROHS3 compliance, plus extended temperature range to 150°C.

Q: Does the shielded construction of the 744311150 affect circuit performance compared to the unshielded 35152C?

A: Shielding in the 744311150 reduces electromagnetic interference (EMI) emission and improves immunity to external noise sources. In applications where the 35152C operated unshielded without EMI issues, the 744311150 shielded design maintains or improves performance. In noise-sensitive circuits, shielding provides additional design margin.

Q: Are there tolerance differences that affect circuit operation?

A: The 744311150 offers ±20% tolerance versus the 35152C ±25% tolerance. This represents improved inductance accuracy. For circuits designed to the 35152C ±25% specification, the 744311150 ±20% tolerance provides tighter performance margins and is fully compatible.

Q: What is the impact of the 744311150 height increase (4.00mm versus 3.20mm)?

A: The 0.8mm height increase must be verified against PCB assembly clearance requirements, particularly in applications with limited vertical space or where components are mounted near connectors or shields. Confirm available clearance in the specific PCB layout before finalizing the substitution.

Q: Is the 744311150 suitable for automotive applications?

A: Yes. The 744311150 carries AEC-Q200 qualification, meeting automotive industry reliability and qualification standards. The 35152C does not specify automotive qualification.