Murata Power Solutions 48151SC Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions 48151SC is a 150 µH shielded wirewound inductor rated for 1.35 A with a maximum DC resistance of 280mOhm. This surface mount component operates across the temperature range of -40°C to 85°C and is classified as Active product status. Substitute parts become necessary when the primary component faces supply constraints, extended lead times, or when design requirements permit operation within broader electrical or thermal specifications.

Substiute Parts

48151SC

Murata Power Solutions Inc.In Stock: 78048151SC Datasheet

Current PartRFQ

SRR1260-151K

Bourns Inc.In Stock: 67045SRR1260-151K Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The Bourns Inc. SRR1260-151K qualifies as a substitute for the 48151SC based on the following alignment of critical electrical parameters:

Matching Parameters:

• Inductance value: 150 µH (identical)
• Shielding classification: Shielded (identical)
• Mounting type: Surface Mount (identical)
• RoHS3 compliance: Both parts meet ROHS3 requirements
• Moisture Sensitivity Level: MSL 1 (Unlimited) for both parts

Allowable Variations:

• Current rating: SRR1260-151K rated at 1.55 A exceeds the 48151SC requirement of 1.35 A, providing design margin
• DC resistance: SRR1260-151K at 260mOhm Max is lower than 48151SC at 280mOhm Max, reducing power dissipation
• Inductance tolerance: SRR1260-151K at ±10% is tighter than 48151SC at ±20%, improving circuit predictability
• Operating temperature: SRR1260-151K extends to 125°C versus 48151SC at 85°C, enabling broader thermal applications

Parameter Comparison

Engineering Selection Recommendations

The SRR1260-151K from Bourns Inc. is suitable as a direct substitute for the 48151SC in applications where the following conditions are met:

• Circuit design accommodates the higher current rating of 1.55 A without adverse effects
• PCB layout and thermal management support the slightly larger package dimensions (0.492" x 0.492" x 0.256" versus 0.480" x 0.480" x 0.236")
• Application does not require operation exclusively within the 48151SC temperature ceiling of 85°C
• Design tolerances accept the tighter inductance tolerance of ±10%

Both parts maintain Active product status, ROHS3 compliance, and REACH unaffected classification, ensuring regulatory alignment for current and future production requirements.

Frequently Asked Questions (FAQ)

Q: Can the SRR1260-151K replace the 48151SC in all applications?

A: The SRR1260-151K is electrically compatible when circuit design permits the higher current rating and extended temperature range. Physical package dimensions differ slightly; verify PCB layout clearances before substitution.

Q: What is the significance of the inductance tolerance difference?

A: The SRR1260-151K tolerance of ±10% is tighter than the 48151SC tolerance of ±20%. This provides improved circuit predictability and reduced inductance variation across production batches, beneficial for precision filtering and resonant applications.

Q: Are there thermal considerations for substitution?

A: The SRR1260-151K operates to 125°C compared to the 48151SC at 85°C. If your application operates near the 48151SC upper limit, the substitute part provides additional thermal margin. Conversely, if thermal management is constrained, the lower DCR of the SRR1260-151K (260mOhm versus 280mOhm) reduces self-heating.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the 48151SC and SRR1260-151K are ROHS3 compliant, REACH unaffected, and classified as MSL 1 (Unlimited). No additional compliance verification is required for substitution.

Q: What are the physical package differences?

A: The SRR1260-151K is marginally larger: 0.492" L x 0.492" W x 0.256" H versus the 48151SC at 0.480" L x 0.480" W x 0.236" H. Both are nonstandard 4-lead surface mount packages. Confirm PCB footprint compatibility before design implementation.