47100SC Equivalent & Substitute Parts Reference

Part Overview

The Murata Power Solutions 47100SC is a 10 µH shielded wirewound inductor rated for 3.8 A with a maximum DC resistance of 32.3 mOhm. This component is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. The part operates across the industrial temperature range of -40°C to 85°C and is housed in a nonstandard 4-lead surface mount package measuring 12.20mm × 12.20mm.

Substiute Parts

47100SC

Murata Power Solutions Inc.In Stock: 78547100SC Datasheet

Current PartRFQ

7447715100

Würth ElektronikIn Stock: 22897447715100 Datasheet

DirectRFQ

BPSC00131345100M00

Pulse ElectronicsIn Stock: 1003BPSC00131345100M00 Datasheet

MFR RecommendedRFQ

BPSC00131345100T00

Pulse ElectronicsIn Stock: 1181BPSC00131345100T00 Datasheet

MFR RecommendedRFQ

SRR1205-100ML

Bourns Inc.In Stock: 2703SRR1205-100ML Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 47100SC is determined by the following critical parameters:

• Inductance Value: Must be 10 µH with ±20% tolerance
• Current Rating: Minimum 3.8 A continuous current capability
• DC Resistance: Maximum 32.3 mOhm to maintain equivalent power dissipation characteristics
• Shielding: Must be shielded to prevent electromagnetic interference
• Mounting: Surface mount configuration required
• Package Footprint: Nonstandard 4-lead package with compatible dimensions
• Environmental Compliance: RoHS and REACH compliance required

The substitute parts listed below meet these core electrical and mechanical requirements while offering active product status and extended temperature operating ranges.

Parameter Comparison

Engineering Selection Recommendations

7447715100 (Würth Elektronik WE-PD Series): This substitute offers the closest electrical match with 30 mOhm DCR, meeting the 3.8 A current requirement. The part carries AEC-Q200 automotive qualification and ROHS3 compliance. Extended temperature range to 125°C provides additional operational margin. Dimensions are nearly identical at 12.00mm × 12.00mm with slightly reduced height of 4.50mm.

BPSC00131345100M00 and BPSC00131345100T00 (Pulse Electronics BPSC Series): Both parts provide active status with extended temperature operation to 125°C and ROHS3 compliance. DCR specification of 35 mOhm represents a 7.8% increase over the original part. The primary distinction between these two variants is inductance tolerance (±20% versus ±30%). Dimensions are slightly larger at 12.50mm × 12.50mm with matching 4.50mm height.

SRR1205-100ML (Bourns SRR1205 Series): This substitute maintains ±20% inductance tolerance and ROHS3 compliance with extended temperature range to 125°C. However, the 54 mOhm DCR represents a 67% increase over the original specification, and the 3.0 A current rating falls below the 3.8 A requirement. This part is suitable only for applications where current demand does not exceed 3.0 A and elevated power dissipation is acceptable.

Frequently Asked Questions (FAQ)

Q: Can the 7447715100 directly replace the 47100SC in existing designs? A: Yes. The 7447715100 meets all critical electrical parameters including inductance, current rating, and DC resistance. Physical dimensions are compatible with the nonstandard 4-lead package footprint. Verification of PCB layout compatibility is recommended due to minor dimensional variations.

Q: What is the impact of higher DC resistance in the Pulse Electronics substitutes? A: The BPSC series parts exhibit 35 mOhm DCR compared to 32.3 mOhm in the original. This 7.8% increase results in proportionally higher power dissipation at rated current. For applications operating continuously at 3.8 A, thermal management should be evaluated. At lower current levels, this difference becomes negligible.

Q: Is the SRR1205-100ML suitable as a substitute? A: The SRR1205-100ML is not recommended as a direct substitute due to two limiting factors: the 3.0 A current rating is insufficient for the 3.8 A design requirement, and the 54 mOhm DCR significantly exceeds the original specification. This part is applicable only in designs where maximum current does not exceed 3.0 A.

Q: How do temperature operating ranges affect substitution decisions? A: The original 47100SC operates to 85°C maximum. All active substitutes extend this range to 125°C, providing additional thermal margin. For applications operating near the original 85°C limit, the extended range offers design flexibility and improved reliability. No derating is required when substituting with extended-range parts.

Q: Are there packaging considerations for the nonstandard 4-lead configuration? A: All substitute parts maintain the nonstandard 4-lead surface mount package type. Dimensional variations exist: Würth 7447715100 measures 12.00mm × 12.00mm, Pulse BPSC series measures 12.50mm × 12.50mm, and Bourns SRR1205-100ML measures 12.70mm × 12.70mm. PCB footprint verification is necessary before design implementation.

Q: What compliance certifications should be verified for new production? A: All active substitutes carry ROHS3 and REACH compliance. The Würth 7447715100 additionally holds AEC-Q200 automotive qualification. For applications requiring automotive-grade components, the 7447715100 is the preferred selection.