47150SC Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions 47150SC is a 15 µH shielded wirewound inductor rated for 3.2 A continuous current with a maximum DC resistance of 46.5 mOhm. This component is designed for surface mount applications in the 4700S series and operates across the industrial temperature range of -40°C to 85°C. The part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production support.

Substiute Parts

47150SC

Murata Power Solutions Inc.In Stock: 110047150SC Datasheet

Current PartRFQ

744771115

Würth ElektronikIn Stock: 7539744771115 Datasheet

MFR RecommendedRFQ

BPSC00131345150M00

Pulse ElectronicsIn Stock: 672BPSC00131345150M00 Datasheet

MFR RecommendedRFQ

BPSC00131345150T00

Pulse ElectronicsIn Stock: 1040BPSC00131345150T00 Datasheet

MFR RecommendedRFQ

SRR1205-150ML

Bourns Inc.In Stock: 958SRR1205-150ML Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 47150SC is determined by the following critical parameters:

• Inductance Value: Must be 15 µH (exact match required)
• Inductance Tolerance: ±20% or tighter acceptable
• Current Rating: Must meet or exceed 3.2 A continuous rating
• DC Resistance: Lower or equal to 46.5 mOhm preferred for thermal performance
• Shielding: Must be shielded to maintain EMI containment
• Operating Temperature Range: Must support minimum -40°C to 85°C; extended range acceptable
• Mounting Type: Surface mount required
• Package Footprint: Nonstandard 4-lead configuration; physical dimensions must be compatible with PCB layout constraints
• Compliance: RoHS compliance required for regulated applications

The following parts meet these substitution criteria:

• 744771115 (Würth Elektronik WE-PD series): Active product with improved current rating and lower DCR
• SRR1205-150ML (Bourns SRR1205 series): Active product with extended temperature range
• BPSC00131345150M00 and BPSC00131345150T00 (Pulse Electronics BPSC series): Active products with ferrite core construction

Parameter Comparison

Engineering Selection Recommendations

744771115 (Würth Elektronik WE-PD): This is the primary recommended substitute. It provides superior electrical performance with lower DC resistance (28 mOhm vs. 46.5 mOhm), higher current rating (4.2 A vs. 3.2 A), and extended operating temperature to 125°C. The part is active with full AEC-Q200 automotive qualification. Physical dimensions are nearly identical (12.00 mm vs. 12.20 mm), with slightly increased height (6.00 mm vs. 5.00 mm) requiring PCB layout verification.

SRR1205-150ML (Bourns SRR1205): This substitute is suitable for applications where the 2.7 A continuous rating is adequate. It offers extended temperature range to 125°C and higher saturation current (5.3 A). The higher DC resistance (70 mOhm) results in increased power dissipation compared to the original part. Footprint dimensions are slightly larger (12.70 mm × 12.70 mm × 5.50 mm).

BPSC00131345150M00 and BPSC00131345150T00 (Pulse Electronics BPSC): These parts provide compact height (4.50 mm) suitable for space-constrained applications. Both offer 125°C operating temperature and ferrite core construction. The BPSC00131345150M00 maintains ±20% tolerance matching the original specification, while BPSC00131345150T00 has ±30% tolerance. DC resistance is 50 mOhm, slightly higher than the original. Saturation current is 4.1 A, exceeding the 3.2 A requirement.

All substitute parts maintain RoHS3 compliance and unlimited moisture sensitivity level (MSL 1), ensuring compatibility with standard manufacturing processes.

Frequently Asked Questions (FAQ)

Q: Can I use SRR1205-150ML as a direct replacement if my application only requires 2.7 A?

A: Yes, provided your circuit design operates at or below 2.7 A continuous current. However, verify that the higher DC resistance (70 mOhm vs. 46.5 mOhm) does not introduce unacceptable power dissipation or voltage drop in your application.

Q: What is the impact of the height difference between 744771115 (6.00 mm) and the original 47150SC (5.00 mm)?

A: The 1.00 mm height increase must be verified against PCB clearance constraints, component stacking requirements, and enclosure dimensions. Confirm mechanical fit before design release.

Q: Are the BPSC parts interchangeable with each other?

A: BPSC00131345150M00 and BPSC00131345150T00 are electrically equivalent with identical current ratings and DC resistance. The primary difference is inductance tolerance (±20% vs. ±30%). Select based on your circuit's tolerance requirements.

Q: Do all substitute parts support the same operating temperature as the original?

A: No. The original 47150SC operates to 85°C maximum, while all substitutes extend to 125°C. This is advantageous for thermal margin but does not affect backward compatibility. Verify that your application does not rely on temperature-dependent behavior below 85°C.

Q: Which substitute offers the best thermal performance?

A: The 744771115 provides the lowest DC resistance (28 mOhm), resulting in the lowest I²R power dissipation at rated current. This is the preferred choice for thermally constrained applications.

Q: Are footprint dimensions critical for PCB layout?

A: Yes. While all substitutes are nominally 12+ mm square packages, dimensional variations (12.00 mm to 12.70 mm) and height differences (4.50 mm to 6.00 mm) require PCB layout verification. Confirm pad spacing and clearance before production.