26S180C Equivalent & Substitute Parts

Part Overview

The 26S180C is a fixed shielded wirewound inductor manufactured by Murata Power Solutions Inc. with an inductance value of 18 µH, rated for 2.32 A continuous current, and a maximum DC resistance of 74mOhm. This component is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical performance can be maintained within the specified parameter tolerances while meeting mechanical and thermal requirements for the application.

Substiute Parts

26S180C

Murata Power Solutions Inc.In Stock: 89626S180C Datasheet

Current PartRFQ

SRR1240-180M

Bourns Inc.In Stock: 3529SRR1240-180M Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 26S180C is determined by the following critical parameters:

• Inductance Value: Must be 18 µH to maintain circuit frequency response and filtering characteristics
• Current Rating: Substitute must support minimum 2.32 A; higher ratings provide design margin
• DC Resistance: Substitute DCR must not exceed 74mOhm to prevent excessive power dissipation
• Shielding: Must be shielded to maintain electromagnetic compatibility
• Mounting Type: Must be Surface Mount for PCB compatibility
• Operating Temperature: Must support minimum -40°C ~ 85°C range
• Compliance: Must maintain RoHS3 compliance for regulatory requirements

The SRR1240-180M from Bourns Inc. meets all substitution criteria with improved electrical performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The SRR1240-180M is a qualified substitute for the 26S180C based on the following engineering criteria:

• Both components maintain Active product status with full manufacturer support
• Both components are ROHS3 compliant and REACH unaffected, meeting regulatory requirements
• The SRR1240-180M provides superior electrical performance with 55mOhm DCR versus 74mOhm, reducing power dissipation by approximately 26%
• Current rating of 3.2 A on the substitute exceeds the 2.32 A requirement, providing operational margin
• Extended operating temperature range (-40°C ~ 125°C) on the substitute accommodates broader thermal environments
• Self-resonant frequency of 20 MHz on the substitute is higher than the 26S180C at 16 MHz, supporting higher frequency applications

Frequently Asked Questions (FAQ)

Q: Can the SRR1240-180M be used as a direct replacement for the 26S180C?

A: Yes. Both components share identical 18 µH inductance values, shielded construction, surface mount packaging, and RoHS3 compliance. The substitute meets or exceeds all critical electrical parameters of the original part.

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

A: The 26S180C measures 0.496" L x 0.181" W x 0.232" H (12.60mm x 4.60mm x 5.90mm). The SRR1240-180M measures 0.492" L x 0.492" W x 0.177" H (12.50mm x 12.50mm x 4.50mm). The substitute has a larger footprint width. PCB layout verification is required to confirm mechanical fit.

Q: Does the lower DC resistance of the SRR1240-180M affect circuit performance?

A: Lower DC resistance (55mOhm versus 74mOhm) reduces power dissipation and heat generation. This is a performance improvement that does not negatively impact circuit function when the inductance value remains constant at 18 µH.

Q: Are there temperature rating implications for substitution?

A: The SRR1240-180M supports -40°C ~ 125°C versus the 26S180C at -40°C ~ 85°C. If the application operates within the original -40°C ~ 85°C range, both parts are suitable. The substitute provides additional thermal margin for higher temperature environments.

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

A: The 26S180C has a self-resonant frequency of 16 MHz; the SRR1240-180M is 20 MHz. Higher self-resonant frequency indicates the substitute maintains inductive behavior across a wider frequency range, supporting higher frequency circuit applications without performance degradation.