Equivalent & Substitute Parts for 49150SC

Part Overview

The Murata Power Solutions 49150SC is a 15 µH shielded wirewound inductor rated for 4.4 A continuous current with a maximum DC resistance of 27 mOhm. This surface mount component operates across the industrial temperature range of -40°C to 85°C and is classified as Active product status with ROHS3 compliance. Substitute parts are necessary to address inventory availability, extended temperature range requirements, or specific application performance characteristics while maintaining electrical and mechanical compatibility.

Substiute Parts

49150SC

Murata Power Solutions Inc.In Stock: 91649150SC Datasheet

Current PartRFQ

SRR1280-150M

Bourns Inc.In Stock: 1188SRR1280-150M Datasheet

DirectRFQ

744770115

Würth ElektronikIn Stock: 4208744770115 Datasheet

MFR RecommendedRFQ

BPSC00131380150M00

Pulse ElectronicsIn Stock: 1174BPSC00131380150M00 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 49150SC is determined by the following critical parameters:

• Inductance Value: Must be 15 µH with ±20% tolerance
• Shielding: Must be shielded construction
• Mounting Type: Must be surface mount
• Package Configuration: Must accommodate nonstandard 4-lead or equivalent footprint with maximum height of 0.315" (8.00 mm)
• Current Rating: Substitute must support minimum 4.4 A continuous current
• DC Resistance: Must not exceed 27 mOhm to maintain thermal and efficiency characteristics
• Environmental Compliance: Must meet ROHS3 and REACH requirements
• Moisture Sensitivity: MSL 1 classification required

All three substitute parts meet these core substitution criteria. Variations in operating temperature range, core material, and saturation current represent secondary performance differentiators that may influence selection based on specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

SRR1280-150M (Bourns Inc.): This substitute provides the highest current rating at 5.2 A with extended operating temperature to 125°C. DC resistance of 28.5 mOhm is marginally higher than the primary part. ROHS3 compliance and MSL 1 rating ensure regulatory and environmental compatibility. Suitable for applications requiring higher thermal headroom or extended temperature operation.

744770115 (Würth Elektronik): This part matches the DC resistance specification at 27 mOhm while providing 5 A current rating and 125°C maximum operating temperature. AEC-Q200 automotive qualification provides additional reliability assurance. Footprint dimensions of 12.00mm x 12.00mm are slightly smaller than the primary part. Recommended for applications requiring automotive-grade reliability or space-constrained layouts.

BPSC00131380150M00 (Pulse Electronics): This substitute offers the highest saturation current at 7.1 A but exhibits elevated DC resistance at 34 mOhm maximum. Operating temperature extends to 105°C. Selection is appropriate only when current capacity is the primary design constraint and elevated DCR is acceptable for the application.

All substitutes maintain ROHS3 compliance, REACH unaffected status, and MSL 1 moisture sensitivity classification, ensuring regulatory and supply chain compatibility with the original 49150SC specification.

Frequently Asked Questions (FAQ)

Q: Can SRR1280-150M be used as a direct replacement for 49150SC?

A: Yes. Both parts share identical inductance (15 µH), tolerance (±20%), shielding, surface mount configuration, and package height (8.00 mm). The SRR1280-150M provides higher current rating (5.2 A vs 4.4 A) and extended temperature range (-40°C to 125°C vs -40°C to 85°C). DC resistance is 28.5 mOhm versus 27 mOhm, a 5.6% increase that may be acceptable depending on thermal budget.

Q: What is the primary difference between 744770115 and 49150SC?

A: The 744770115 maintains identical DC resistance (27 mOhm) and provides equivalent current rating (5 A vs 4.4 A). Operating temperature extends to 125°C. The footprint is slightly smaller at 12.00mm x 12.00mm versus 12.20mm x 12.20mm. AEC-Q200 automotive qualification is an additional feature not specified for the primary part.

Q: Why does BPSC00131380150M00 have higher DC resistance?

A: The BPSC00131380150M00 exhibits 34 mOhm maximum DCR, representing a 25.9% increase over the 49150SC specification. This higher resistance results in increased power dissipation and thermal generation. This part is suitable only when current capacity (7.1 A saturation) is the critical design parameter and elevated losses are acceptable.

Q: Are all substitutes compatible with the original PCB layout?

A: Footprint compatibility requires verification. The 49150SC is 12.20mm x 12.20mm, while SRR1280-150M and BPSC00131380150M00 are 12.50mm x 12.50mm, and 744770115 is 12.00mm x 12.00mm. All maintain identical height (8.00 mm). PCB pad spacing and lead configuration must be confirmed before substitution.

Q: Do all substitutes meet the same environmental and compliance standards?

A: Yes. All four parts are ROHS3 compliant, REACH unaffected, and classified as MSL 1 (unlimited moisture sensitivity). Environmental operating range varies: 49150SC operates -40°C to 85°C, while SRR1280-150M and 744770115 extend to 125°C, and BPSC00131380150M00 to 105°C.