24S101C Equivalent & Substitute Parts

Part Overview

The 24S101C is a 100 µH shielded wirewound inductor manufactured by Murata Power Solutions Inc., designed for surface mount applications with a current rating of 520 mA and maximum DC resistance of 540 mOhm. This component is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Alternative components may be required due to inventory constraints, application-specific performance requirements, or design optimization needs.

Key Parameters

Parameter	Value
Inductance	100 µH
Current Rating	520 mA
DC Resistance (DCR)	540 mOhm Max
Shielding	Shielded
Mounting Type	Surface Mount
Operating Temperature Range	-40°C ~ 85°C
Frequency - Self Resonant	6.2 MHz
Package Type	Nonstandard
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 24S101C is determined by the following critical parameters:

Inductance value must be 100 µH
Shielding configuration must be Shielded
Mounting type must be Surface Mount
Current rating must meet or exceed 520 mA
DC resistance must not exceed 540 mOhm
Operating temperature range must encompass the application requirements
RoHS3 compliance is mandatory

The SRR7045-101M from Bourns Inc. qualifies as a substitute based on these criteria. It maintains the required 100 µH inductance, shielded configuration, and surface mount design while providing superior electrical performance characteristics.

Parameter Comparison

Parameter	24S101C (Murata)	SRR7045-101M (Bourns)
Inductance	100 µH	100 µH
Current Rating (Amps)	520 mA	1 A
DC Resistance (DCR)	540 mOhm Max	300 mOhm Max
Shielding	Shielded	Shielded
Frequency - Self Resonant	6.2 MHz	8 MHz
Operating Temperature Range	-40°C ~ 85°C	-40°C ~ 125°C
Mounting Type	Surface Mount	Surface Mount
Package Type	Nonstandard	Nonstandard
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

The SRR7045-101M is a qualified substitute for the 24S101C. Both components maintain Active product status and full RoHS3 compliance with REACH Unaffected designation. The substitute part provides enhanced performance margins: current rating of 1 A exceeds the 520 mA requirement, DC resistance of 300 mOhm is lower than the 540 mOhm maximum, and operating temperature range extends to 125°C compared to 85°C. Physical dimensions differ slightly (7.00mm x 7.00mm vs. 7.70mm x 7.10mm), requiring PCB layout verification. Both components are supplied in Tape & Reel packaging with unlimited moisture sensitivity rating.

Frequently Asked Questions (FAQ)

Q: Can the SRR7045-101M replace the 24S101C in all applications?

A: Substitution is valid when the application current requirement does not exceed 1 A, operating temperature remains within -40°C to 125°C, and PCB layout accommodates the physical dimension differences (7.00mm x 7.00mm footprint versus 7.70mm x 7.10mm).

Q: What are the physical dimension differences between these parts?

A: The 24S101C measures 7.70mm L x 7.10mm W x 4.50mm H (seated). The SRR7045-101M measures 7.00mm L x 7.00mm W x 4.80mm H (seated). Both are nonstandard packages requiring specific PCB footprint design.

Q: Does the lower DC resistance of the SRR7045-101M affect circuit performance?

A: Lower DC resistance (300 mOhm vs. 540 mOhm) reduces power dissipation and heat generation, which is beneficial for thermal management. This does not negatively impact circuit function when the inductance value and current rating requirements are met.

Q: Are both parts available in the same packaging format?

A: Yes, both the 24S101C and SRR7045-101M are supplied in Tape & Reel (TR) packaging with identical moisture sensitivity level (MSL 1 - Unlimited).

Q: What is the inductance tolerance for the SRR7045-101M?

A: The SRR7045-101M has an inductance tolerance of ±20%.

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