Equivalent & Substitute Parts for 47221SC

Part Overview

The Murata Power Solutions 47221SC is a 220 µH shielded wirewound inductor rated for 800 mA with a maximum DC resistance of 629mOhm. This component is designed for surface mount applications in the 4700S series. The part is currently obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. Substitute parts must maintain the 220 µH inductance specification, shielded construction, and surface mount compatibility while meeting or exceeding the electrical performance characteristics.

Substiute Parts

47221SC

Murata Power Solutions Inc.In Stock: 92147221SC Datasheet

Current PartRFQ

48221SC

Murata Power Solutions Inc.In Stock: 169148221SC Datasheet

MFR RecommendedRFQ

744771220

Würth ElektronikIn Stock: 8397744771220 Datasheet

MFR RecommendedRFQ

BPSC00131345221M00

Pulse ElectronicsIn Stock: 753BPSC00131345221M00 Datasheet

MFR RecommendedRFQ

BPSC00131345221T00

Pulse ElectronicsIn Stock: 1060BPSC00131345221T00 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

• Inductance value: 220 µH (fixed requirement)
• Inductance tolerance: ±20% or tighter
• Current rating: Equal to or greater than 800 mA
• DC resistance: Lower or equal to 629mOhm
• Shielding: Shielded construction required
• Mounting type: Surface mount only
• Package footprint: Nonstandard, 4 lead configuration with compatible dimensions
• Operating temperature: Minimum -40°C ~ 85°C range

All four substitute parts meet these core substitution criteria. The 48221SC offers improved current handling at 1 A with lower DCR. The 744771220 provides AEC-Q200 automotive qualification with extended temperature range. The BPSC00131345221M00 and BPSC00131345221T00 variants differ in inductance tolerance (±20% vs ±30%) but share identical electrical and mechanical specifications otherwise.

Parameter Comparison

Engineering Selection Recommendations

48221SC (Murata Power Solutions): Active product status with ROHS3 compliance. Maintains identical footprint and temperature range as the original 47221SC while providing superior electrical performance through reduced DCR (430mOhm vs 629mOhm) and increased current rating (1 A vs 800 mA). Recommended for direct replacement in existing designs.

744771220 (Würth Elektronik): Active product with ROHS3 compliance and AEC-Q200 automotive qualification. Extended operating temperature range (-40°C ~ 125°C) and lowest DCR specification (400mOhm). Ferrite core construction with saturation current specification (1.2A). Footprint dimensions are within 0.2mm tolerance of the original part. Suitable for automotive and extended temperature applications.

BPSC00131345221M00 (Pulse Electronics): Active product with ROHS3 compliance. Maintains ±20% inductance tolerance with lowest profile height (4.50mm). Ferrite core construction. Slightly larger footprint (12.50mm x 12.50mm). Extended operating temperature range (-40°C ~ 125°C). Suitable for space-constrained applications.

BPSC00131345221T00 (Pulse Electronics): Active product with ROHS3 compliance. Identical specifications to BPSC00131345221M00 except for relaxed inductance tolerance (±30%). Extended operating temperature range (-40°C ~ 125°C). Lowest profile height (4.50mm). Consider only when ±30% tolerance is acceptable for the application.

Frequently Asked Questions (FAQ)

Q: Can the 48221SC directly replace the 47221SC? A: Yes. The 48221SC maintains identical inductance (220 µH), tolerance (±20%), footprint (12.20mm x 12.20mm), and temperature range (-40°C ~ 85°C). The increased current rating (1 A vs 800 mA) and reduced DCR (430mOhm vs 629mOhm) represent performance improvements with no compatibility concerns.

Q: What are the footprint differences between substitute parts? A: The 48221SC matches the original 12.20mm x 12.20mm footprint exactly. The 744771220 is 12.00mm x 12.00mm (0.2mm smaller). The BPSC variants are 12.50mm x 12.50mm (0.3mm larger). Height differences range from 4.50mm to 6.00mm. Verify PCB layout compatibility before selection.

Q: Which substitute is best for automotive applications? A: The 744771220 carries AEC-Q200 automotive qualification and extended temperature range (-40°C ~ 125°C), making it the specified choice for automotive designs.

Q: What is the difference between BPSC00131345221M00 and BPSC00131345221T00? A: Both parts are electrically and mechanically identical except for inductance tolerance. The M00 variant specifies ±20% tolerance, while the T00 variant specifies ±30% tolerance. Select based on circuit tolerance requirements.

Q: Are all substitutes RoHS3 compliant? A: Yes. All four substitute parts carry ROHS3 compliance. The original 47221SC RoHS status is not specified.

Q: Which substitute has the lowest DC resistance? A: The 744771220 offers the lowest maximum DCR at 400mOhm, compared to 629mOhm for the original part and 430mOhm for the 48221SC.

Q: Can I use a substitute with higher DCR than the original? A: The BPSC variants specify 700mOhm maximum DCR, which exceeds the original 629mOhm specification. Use only if circuit design tolerates increased power dissipation and voltage drop across the inductor.