Murata 48150SC Fixed Inductor - Equivalent & Substitute Parts

Part Overview

The Murata 48150SC is a 15 µH shielded wirewound inductor rated for 3.7 A continuous current with a maximum DC resistance of 40 mOhm. This surface mount component is designed for applications requiring compact, shielded inductive filtering in power conversion and signal conditioning circuits. The part is currently active in production with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances.

Key Parameters

Parameter	Value	Unit
Inductance	15	µH
Inductance Tolerance	±20	%
Current Rating	3.7	A
DC Resistance (Max)	40	mOhm
Shielding	Shielded	—
Operating Temperature Range	-40 to 85	°C
Mounting Type	Surface Mount	—
Package Type	Nonstandard, 4 Lead	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the Murata 48150SC is determined by the following critical parameters:

Inductance Value: Must be 15 µH with ±20% tolerance
Current Rating: Substitute must support minimum 3.7 A continuous current
DC Resistance: Substitute DCR must not exceed 40 mOhm to maintain thermal and efficiency characteristics
Shielding: Shielded construction required for EMI containment
Mounting Type: Surface mount configuration mandatory
Compliance: RoHS3 compliance and REACH unaffected status required
Operating Temperature: Minimum range of -40°C to 85°C required

The Bourns SRR1260-150M meets all substitution criteria with superior current rating (5 A vs. 3.7 A), lower DC resistance (27 mOhm vs. 40 mOhm), and extended operating temperature range (-40°C to 125°C). Mechanical dimensions are comparable within acceptable tolerances for standard PCB layouts.

Parameter Comparison

Parameter	Murata 48150SC	Bourns SRR1260-150M	Compatibility
Inductance	15 µH	15 µH	Equivalent
Inductance Tolerance	±20%	±20%	Equivalent
Current Rating	3.7 A	5 A	Substitute Rated Higher
DC Resistance (Max)	40 mOhm	27 mOhm	Substitute Superior
Shielding	Shielded	Shielded	Equivalent
Operating Temperature Range	-40 to 85°C	-40 to 125°C	Substitute Extended
Mounting Type	Surface Mount	Surface Mount	Equivalent
Package Type	Nonstandard, 4 Lead	Nonstandard	Compatible
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
REACH Status	REACH Unaffected	REACH Unaffected	Equivalent
Size / Dimension	12.20 x 12.20 mm	12.50 x 12.50 mm	Comparable
Height (Max)	6.00 mm	6.50 mm	Comparable

Engineering Selection Recommendations

The Bourns SRR1260-150M is a qualified substitute for the Murata 48150SC based on the following engineering criteria:

Both parts maintain identical inductance values and tolerance specifications
The substitute provides superior electrical performance with 35% higher current rating and 32.5% lower DC resistance
Extended operating temperature range of the substitute (-40°C to 125°C) exceeds the original part specification
Both parts carry ROHS3 compliance and REACH unaffected status, meeting regulatory requirements
Mechanical dimensions are comparable with minimal PCB layout impact
Both parts are active production status with established supply chains

Selection between these parts should be based on application current requirements, thermal environment, and PCB space constraints. The substitute is suitable for applications requiring higher current capacity or lower thermal dissipation.

Frequently Asked Questions (FAQ)

Q: Can the Bourns SRR1260-150M directly replace the Murata 48150SC in existing designs?

A: Yes, provided the PCB footprint accommodates the slightly larger dimensions (12.50 x 12.50 mm vs. 12.20 x 12.20 mm) and 6.50 mm height. The electrical parameters are compatible for all applications within the original 3.7 A current specification.

Q: What is the primary advantage of substituting with the SRR1260-150M?

A: The substitute offers lower DC resistance (27 mOhm vs. 40 mOhm), resulting in reduced power dissipation and improved thermal performance. The higher current rating (5 A vs. 3.7 A) provides design margin for applications with variable load conditions.

Q: Are there any compliance differences between the two parts?

A: No. Both parts are ROHS3 compliant and REACH unaffected. Regulatory compliance is equivalent.

Q: Does the substitute part require different PCB layout considerations?

A: The substitute dimensions are comparable. Standard PCB layout practices for shielded inductors apply to both parts. Verify footprint compatibility with your design tools before implementation.

Q: What is the inductance tolerance for both parts?

A: Both the Murata 48150SC and Bourns SRR1260-150M maintain ±20% inductance tolerance, ensuring equivalent circuit performance in filtering and energy storage applications.

Q: Can the substitute be used in applications requiring the full -40°C to 85°C operating range?

A: Yes. The substitute's extended temperature range (-40°C to 125°C) fully covers the original specification, making it suitable for all temperature environments specified for the original part.

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