47151SC Fixed Inductor 150µH Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions 47151SC is a 150µH shielded wirewound inductor rated for 1.1A continuous current with a maximum DC resistance of 410mOhm. This component is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production support. The part operates across the industrial temperature range of -40°C to 85°C and is RoHS compliant with unlimited moisture sensitivity rating.

Substiute Parts

47151SC

Murata Power Solutions Inc.In Stock: 88747151SC Datasheet

Current PartRFQ

744771215

Würth ElektronikIn Stock: 2127744771215 Datasheet

MFR RecommendedRFQ

BPSC00131345151M00

Pulse ElectronicsIn Stock: 791BPSC00131345151M00 Datasheet

MFR RecommendedRFQ

BPSC00131345151T00

Pulse ElectronicsIn Stock: 1127BPSC00131345151T00 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 47151SC is determined by the following core parameters:

• Inductance Value: Must be 150µH ±20% tolerance minimum
• Current Rating: Must support minimum 1.1A continuous current
• DC Resistance: Lower DCR values are acceptable; higher values require circuit validation
• Shielding: Must maintain shielded construction
• Mounting: Surface mount configuration required
• Temperature Range: Must cover -40°C minimum; extended upper range acceptable
• RoHS Compliance: Required for regulatory alignment

All three substitute parts meet these core substitution criteria. Differences in saturation current, self-resonant frequency, and package dimensions are secondary considerations dependent on specific circuit application requirements.

Parameter Comparison

Engineering Selection Recommendations

744771215 (Würth Elektronik WE-PD Series): This part offers the closest electrical performance match with improved current rating (1.21A) and superior DC resistance (230mOhm). The extended temperature range to 125°C provides additional operational margin. Active product status ensures long-term availability. AEC-Q200 automotive qualification adds reliability assurance. Physical dimensions are comparable with minimal PCB layout impact.

BPSC00131345151M00 (Pulse Electronics, ±20% Tolerance): This substitute provides active product status with extended temperature range. The lower saturation current (950mA) requires verification against circuit peak current demands. Higher DC resistance (530mOhm) increases power dissipation and should be evaluated in thermal analysis. Compact height (4.50mm) offers space advantage in constrained layouts.

BPSC00131345151T00 (Pulse Electronics, ±30% Tolerance): Electrically identical to BPSC00131345151M00 with relaxed inductance tolerance (±30%). This wider tolerance may impact circuit performance in applications requiring tighter inductance control. Selection should be limited to circuits tolerant of ±30% inductance variation.

Frequently Asked Questions (FAQ)

Q: Can the 744771215 directly replace the 47151SC without circuit modification?

A: The 744771215 meets all core substitution parameters with improved electrical characteristics. Lower DC resistance reduces power loss. Verify PCB footprint compatibility due to slightly different package dimensions (12.00mm vs 12.20mm) and increased height (6.00mm vs 5.00mm).

Q: What is the primary limitation of the Pulse Electronics substitutes?

A: Both BPSC parts have saturation current of 950mA, which is below the original 1.1A rating. Applications requiring sustained current above 950mA must use the Würth 744771215 or validate that peak current demands remain within saturation limits.

Q: How does the higher DC resistance of Pulse parts affect circuit performance?

A: The 530mOhm DCR of BPSC parts versus 410mOhm of the original increases resistive losses by approximately 29%. In power conversion applications, this translates to higher heat generation. Thermal analysis is required to confirm acceptable operating temperatures.

Q: Are there temperature range considerations for substitute selection?

A: The original 47151SC operates to 85°C maximum. Both substitute options extend to 125°C, providing additional thermal margin. This is advantageous for applications in elevated ambient conditions or high-power dissipation scenarios.

Q: What is the difference between BPSC00131345151M00 and BPSC00131345151T00?

A: These parts are electrically identical except for inductance tolerance. The M00 variant specifies ±20% tolerance matching the original specification. The T00 variant allows ±30% tolerance, suitable only for applications with relaxed inductance requirements.

Q: Do all substitutes maintain RoHS compliance?

A: Yes. The original 47151SC is RoHS Compliant. All three substitutes carry ROHS3 Compliant status, meeting current regulatory requirements for restricted substances.