29L154C Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions 29L154C is a 150 µH shielded wirewound inductor rated for 430 mA with a maximum DC resistance of 850 mOhm. This surface mount component features nonstandard corner terminals and operates across the temperature range of -40°C to 85°C. The part is classified as obsolete, making identification of suitable equivalent components essential for ongoing design support and production continuity.

Substiute Parts

29L154C

Murata Power Solutions Inc.In Stock: 115029L154C Datasheet

Current PartRFQ

B82472G6154M000

EPCOS - TDK ElectronicsIn Stock: 1794B82472G6154M000 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 29L154C is determined by the following critical parameters:

• Inductance Value: Must be 150 µH to maintain circuit function
• Current Rating: Substitute must support minimum 430 mA; higher ratings provide design margin
• DC Resistance: Substitute DCR must not exceed 850 mOhm to prevent excessive power loss
• Shielding: Shielded construction required to maintain electromagnetic compatibility
• Surface Mount Configuration: Nonstandard package dimensions (7.20mm x 7.20mm) must be compatible with existing PCB layouts
• Operating Temperature Range: Substitute must cover or exceed -40°C to 85°C
• Compliance: RoHS and REACH compliance required for regulatory alignment

The EPCOS B82472G6154M000 meets these substitution criteria with improved electrical performance and active product status.

Parameter Comparison

Engineering Selection Recommendations

The B82472G6154M000 is the qualified substitute for the 29L154C based on the following factors:

Electrical Compatibility: Both components provide 150 µH inductance with shielded construction. The substitute offers superior current handling (530 mA vs. 430 mA) and lower DC resistance (580 mOhm vs. 850 mOhm), resulting in reduced power dissipation and improved thermal performance.

Compliance Status: The B82472G6154M000 maintains ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements. The 29L154C, while RoHS compliant, carries obsolete product status.

Thermal Performance: The substitute supports an extended operating temperature range (-55°C to 125°C) compared to the original part (-40°C to 85°C), providing greater design flexibility for temperature-sensitive applications.

Physical Considerations: The substitute dimensions (7.30mm x 7.30mm x 4.50mm) are marginally larger than the original (7.20mm x 7.20mm x 3.15mm). PCB layout verification is required to confirm clearance compatibility, particularly for height-constrained applications.

Frequently Asked Questions (FAQ)

Q: Can the B82472G6154M000 directly replace the 29L154C without circuit modification?

A: The B82472G6154M000 meets all critical electrical parameters (inductance, current rating, DCR, shielding) required for functional equivalence. However, physical dimensions differ slightly. PCB layout review is necessary to confirm that the 0.1mm increase in length/width and 1.35mm increase in height do not create clearance conflicts.

Q: What is the significance of the lower DC resistance in the substitute part?

A: The B82472G6154M000 exhibits 580 mOhm maximum DCR compared to 850 mOhm in the original. This 32% reduction in resistance decreases I²R losses, resulting in lower operating temperature and improved efficiency in current-carrying applications.

Q: Are there packaging differences between these parts?

A: The 29L154C uses nonstandard corner terminals with unspecified packaging format. The B82472G6154M000 is supplied in Tape & Reel (TR) format, which is standard for automated assembly. Verify that your assembly process accommodates TR packaging.

Q: Does the extended temperature range of the substitute affect compatibility?

A: The B82472G6154M000 operates from -55°C to 125°C, exceeding the original -40°C to 85°C range. This provides additional design margin and is fully backward compatible with applications designed for the narrower original range.

Q: What compliance certifications apply to both parts?

A: Both components are RoHS compliant and REACH unaffected. The substitute carries ROHS3 certification, representing the current regulatory standard. Both maintain MSL 1 (Unlimited) moisture sensitivity rating.