Equivalent & Substitute Parts for 47331SC

Part Overview

The Murata Power Solutions 47331SC is a 330 µH shielded wirewound inductor rated for 700 mA with a maximum DC resistance of 940 mOhm. This component is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. The part operates across the temperature range of -40°C to 85°C and is RoHS compliant with unlimited moisture sensitivity rating.

Substiute Parts

47331SC

Murata Power SolutionsIn Stock: 85347331SC Datasheet

Current PartRFQ

744771233

Würth ElektronikIn Stock: 10523744771233 Datasheet

MFR RecommendedRFQ

BPSC00131345331M00

Pulse ElectronicsIn Stock: 1158BPSC00131345331M00 Datasheet

MFR RecommendedRFQ

BPSC00131345331T00

Pulse ElectronicsIn Stock: 1001BPSC00131345331T00 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 47331SC is determined by the following critical parameters:

• Inductance Value: Must be 330 µH
• Inductance Tolerance: ±20% or tighter
• Current Rating: Minimum 700 mA
• Shielding: Must be shielded
• Mounting Type: Surface mount configuration
• DC Resistance: Lower or equivalent to 940 mOhm
• Operating Temperature Range: Must support -40°C to 85°C minimum
• Package Compatibility: Nonstandard surface mount package

All substitute parts listed meet these core electrical and mechanical requirements, enabling direct functional replacement in applications designed for the 47331SC.

Parameter Comparison

Engineering Selection Recommendations

744771233 (Würth Elektronik WE-PD Series)

This substitute offers improved electrical performance with lower DC resistance (510 mOhm vs. 940 mOhm) and higher current rating (780 mA vs. 700 mA). The extended operating temperature range (-40°C to 125°C) provides additional thermal margin. The part is active and AEC-Q200 rated, supporting automotive and industrial applications. Dimensional variation is minimal (12.00mm vs. 12.20mm), with increased height (6.00mm vs. 5.00mm) requiring PCB layout verification.

BPSC00131345331M00 (Pulse Electronics BPSC Series)

This substitute maintains the ±20% inductance tolerance and provides extended operating temperature range (-40°C to 125°C). DC resistance is slightly higher (990 mOhm vs. 940 mOhm), remaining within acceptable limits. The part is active and ROHS3 compliant. Saturation current is specified at 500 mA. Footprint dimensions are slightly larger (12.50mm x 12.50mm), with reduced height (4.50mm vs. 5.00mm).

BPSC00131345331T00 (Pulse Electronics BPSC Series)

This substitute is functionally equivalent to BPSC00131345331M00 with relaxed inductance tolerance (±30% vs. ±20%). All other electrical and mechanical specifications remain identical. Selection of this variant depends on tolerance requirements for the specific application.

Frequently Asked Questions (FAQ)

Q: Can the 744771233 be used as a direct replacement for the 47331SC?

A: Yes. The 744771233 meets all critical substitution parameters: 330 µH inductance, ±20% tolerance, 780 mA current rating (exceeds 700 mA requirement), shielded construction, and surface mount configuration. The lower DC resistance (510 mOhm) is advantageous. PCB layout must accommodate the increased height of 6.00mm versus 5.00mm.

Q: What is the difference between BPSC00131345331M00 and BPSC00131345331T00?

A: The primary difference is inductance tolerance. BPSC00131345331M00 specifies ±20% tolerance, matching the original 47331SC. BPSC00131345331T00 specifies ±30% tolerance. All other electrical and mechanical parameters are identical. Selection depends on circuit tolerance requirements.

Q: Are there thermal considerations when substituting to parts with extended temperature ranges?

A: The substitute parts support -40°C to 125°C operation, exceeding the original 47331SC range of -40°C to 85°C. This provides additional thermal margin but does not require circuit modification. Applications operating within the original temperature range experience no thermal impact.

Q: How do dimensional differences affect PCB layout?

A: The 47331SC footprint is 12.20mm x 12.20mm with 5.00mm height. The 744771233 is 12.00mm x 12.00mm with 6.00mm height. The Pulse Electronics parts (BPSC series) are 12.50mm x 12.50mm with 4.50mm height. Verify PCB land pattern compatibility and clearance to adjacent components before substitution.

Q: Do all substitute parts maintain RoHS compliance?

A: Yes. The 47331SC is RoHS compliant. All substitute parts are ROHS3 compliant, meeting current regulatory requirements.

Q: What is the significance of the AEC-Q200 rating on the 744771233?

A: AEC-Q200 certification indicates the part meets automotive-grade reliability standards. This certification is relevant only for automotive applications. Non-automotive applications are unaffected by this designation.