Murata 26S100C Equivalent & Substitute Parts

Part Overview

The Murata 26S100C is a 10 µH shielded wirewound inductor rated for 2.65 A continuous current with a maximum DC resistance of 50mOhm. This component is designed for surface mount applications requiring compact form factors and electromagnetic shielding. 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 are required due to inventory constraints, lead time considerations, or application-specific requirements within the allowed parameter ranges.

Substiute Parts

26S100C

Murata Power Solutions Inc.In Stock: 73726S100C Datasheet

Current PartRFQ

SRR1240-100M

Bourns Inc.In Stock: 67397SRR1240-100M Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Murata 26S100C is determined by the following criteria:

Primary Electrical Parameters:

• Inductance value must match: 10 µH
• Shielding requirement: Shielded construction mandatory
• DC resistance must not exceed the maximum specified: 50mOhm

Secondary Electrical Parameters:

• Current rating must meet or exceed the application requirement: minimum 2.65 A
• Operating temperature range must encompass or exceed the specified range: -40°C to 85°C

Mechanical Parameters:

• Mounting type: Surface Mount only
• Package classification: Nonstandard form factor
• Compliance: RoHS3 and REACH requirements must be maintained

The Bourns SRR1240-100M qualifies as a substitute based on matching inductance (10 µH), shielded construction, superior current rating (4 A vs. 2.65 A), lower DC resistance (32mOhm vs. 50mOhm maximum), extended operating temperature range (-40°C to 125°C), and equivalent compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Selection between the Murata 26S100C and Bourns SRR1240-100M should be based on the following factors:

Murata 26S100C is the primary specification when:

• Original design validation has been completed with this specific part number
• Inventory availability is confirmed and lead times are acceptable
• The compact physical dimensions (12.60mm L x 4.60mm W x 5.90mm H) are critical to PCB layout constraints

Bourns SRR1240-100M is acceptable as a substitute when:

• The application can accommodate the larger footprint (12.50mm L x 12.50mm W x 4.50mm H)
• Enhanced current handling capability (4 A vs. 2.65 A) provides design margin
• Lower DC resistance (32mOhm vs. 50mOhm) reduces thermal dissipation
• Extended operating temperature range (-40°C to 125°C vs. -40°C to 85°C) supports broader environmental conditions
• Both parts maintain equivalent RoHS3 and REACH compliance status

Both parts are active products with established supply chains and full regulatory compliance documentation.

Frequently Asked Questions (FAQ)

Q: Can the Bourns SRR1240-100M be used as a direct replacement for the Murata 26S100C?

A: The Bourns SRR1240-100M meets all electrical substitution criteria: matching 10 µH inductance, shielded construction, superior current rating, and lower DC resistance. However, the physical footprint differs significantly (12.50mm x 12.50mm vs. 12.60mm x 4.60mm). PCB layout compatibility must be verified before implementation.

Q: What are the critical parameters that define substitution eligibility?

A: Inductance value (10 µH), shielding requirement (shielded), DC resistance maximum (50mOhm), current rating minimum (2.65 A), operating temperature range (-40°C to 85°C), and surface mount packaging are the controlling parameters. Deviations from these specifications require engineering re-evaluation.

Q: Are there compliance or certification differences between these parts?

A: Both parts are RoHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited) moisture sensitivity ratings. No compliance differentiation exists between the two options.

Q: What is the impact of the different self-resonant frequencies?

A: The Bourns SRR1240-100M exhibits a higher self-resonant frequency (27 MHz vs. 22.9 MHz). This parameter is provided for reference; substitution eligibility is not determined by this specification alone. Application-specific frequency response requirements should be evaluated independently.

Q: How do the physical dimensions affect substitution decisions?

A: The Murata 26S100C is significantly more compact in length and width (12.60mm x 4.60mm vs. 12.50mm x 12.50mm), while the Bourns part is lower in height (4.50mm vs. 5.90mm). PCB routing, thermal management, and spatial constraints must be assessed for each application before substitution.