Murata Power Solutions 23100C Fixed Inductor Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions 23100C is a 10 µH unshielded wirewound surface mount inductor rated for 1.02 A continuous current with a maximum DC resistance of 138mOhm. This component is designed for applications requiring compact fixed inductance in power conversion, filtering, and signal conditioning circuits. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating, making it suitable for industrial and commercial deployment across the -40°C to 85°C operating temperature range.

Equivalent and substitute parts are identified when component availability is constrained, supply chain disruptions occur, or design flexibility permits selection from qualified alternatives meeting the same electrical and mechanical specifications.

Substiute Parts

23100C

Murata Power Solutions Inc.In Stock: 173623100C Datasheet

Current PartRFQ

SDR0403-100ML

Bourns Inc.In Stock: 10438SDR0403-100ML Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Murata 23100C is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 10 µH (exact match required)
• Mounting type: Surface Mount (identical package interface)
• Physical footprint: 4.50mm x 4.00mm base dimensions (mechanical compatibility)
• Shielding configuration: Unshielded (electromagnetic environment compatibility)

Secondary Compatibility Parameters:

• Current rating: Minimum 1.02 A (substitute must support or exceed rated current)
• DC resistance: Maximum 180mOhm (acceptable variance for thermal and efficiency considerations)
• Operating temperature range: Minimum -40°C to 85°C coverage
• Regulatory compliance: RoHS3 and REACH status alignment

The Bourns SDR0403-100ML qualifies as a direct substitute based on matching inductance, identical base footprint dimensions, surface mount configuration, and unshielded topology. Electrical performance parameters remain within acceptable engineering tolerances for equivalent circuit operation.

Parameter Comparison

Engineering Selection Recommendations

Murata 23100C Selection Criteria:

• Primary choice when original design specifications require 138mOhm maximum DC resistance
• Preferred for applications with strict thermal budgets where lower resistance is critical
• Recommended when supply availability from Murata distribution channels is confirmed
• Active product status ensures long-term availability and manufacturing consistency

Bourns SDR0403-100ML Selection Criteria:

• Direct substitute when Murata 23100C availability is limited or discontinued
• Acceptable for applications tolerating up to 180mOhm DC resistance
• Suitable for designs operating within -40°C to 125°C range, providing extended thermal margin
• Higher current saturation rating (1.7A) provides additional design headroom in current-limited applications
• Both parts maintain identical RoHS3 and REACH compliance status, ensuring regulatory equivalence

Mechanical Compatibility: The 0.30mm height difference (4.60mm vs 3.20mm) remains within standard PCB assembly tolerances and does not impact board-level integration for standard surface mount processes.

Frequently Asked Questions (FAQ)

Q: Can the Bourns SDR0403-100ML be used as a direct replacement for the Murata 23100C in existing designs?

A: Yes. Both inductors share identical 10 µH inductance, 4.50mm x 4.00mm footprint, surface mount configuration, and unshielded topology. The Bourns part operates within acceptable electrical parameter variance for equivalent circuit function. PCB layout and assembly processes require no modification.

Q: What is the impact of the 42mOhm DC resistance difference between these parts?

A: The Bourns SDR0403-100ML exhibits 180mOhm maximum DCR compared to 138mOhm for the Murata part. This 30% increase results in proportionally higher resistive losses in the inductor. For applications with continuous current near 1.02 A, thermal dissipation increases approximately 0.044 mW per ampere-squared. Thermal analysis is required for power-critical applications.

Q: Are there any package or mounting differences that affect PCB assembly?

A: Both parts use identical base footprint dimensions (4.50mm x 4.00mm) and surface mount configuration. The Bourns part has a maximum seated height of 4.60mm versus 3.20mm for the Murata part. This 0.30mm variance is within standard PCB assembly tolerances and does not require design modification for typical applications.

Q: Do both parts meet the same regulatory and compliance standards?

A: Yes. Both the Murata 23100C and Bourns SDR0403-100ML are RoHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited) moisture sensitivity rating. Regulatory equivalence is confirmed for industrial and commercial applications.

Q: What is the current saturation difference, and does it affect circuit design?

A: The Bourns SDR0403-100ML specifies 1.7A saturation current compared to no saturation specification for the Murata part. For applications operating at or near 1.02 A continuous rating, the Bourns part provides additional saturation margin, reducing inductance degradation under transient current spikes.

Q: Which part should be selected for new designs?

A: Selection depends on supply availability and application requirements. For designs requiring minimum DC resistance and thermal optimization, specify the Murata 23100C. For designs where extended temperature range (-40°C to 125°C) or higher current saturation provides system benefits, the Bourns SDR0403-100ML is appropriate. Both parts are Active status with confirmed inventory availability.