Murata Power Solutions 29L105C Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions 29L105C is a 1 mH shielded wirewound inductor rated for 140 mA maximum current with a DC resistance of 6.48 Ohm maximum. This component is designed for surface mount applications in the 2900L series. The part is currently obsolete, making identification of suitable substitute components necessary for ongoing design support and production continuity.

Substiute Parts

29L105C

Murata Power Solutions Inc.In Stock: 95829L105C Datasheet

Current PartRFQ

744062102

Würth ElektronikIn Stock: 6854744062102 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 29L105C is determined by the following critical parameters:

• Inductance Value: Must be 1 mH to maintain circuit functionality
• Current Rating: Substitute must support minimum 140 mA operation
• DC Resistance: Lower DCR values are acceptable; higher values may impact circuit performance
• Shielding: Shielded construction required to maintain electromagnetic compatibility
• Mounting Type: Surface mount configuration mandatory for PCB compatibility
• Operating Temperature: Substitute must cover the -40°C ~ 85°C range or broader
• Package Footprint: Physical dimensions must be compatible with existing PCB layouts

The Würth Elektronik 744062102 meets these substitution criteria with equivalent inductance, higher current rating capability, lower DC resistance, and compatible surface mount construction.

Parameter Comparison

Engineering Selection Recommendations

The Würth Elektronik 744062102 is the designated substitute for the obsolete Murata 29L105C. This part maintains electrical equivalence through matching 1 mH inductance and shielded construction while providing improved specifications: higher current rating (160 mA vs. 140 mA), lower DC resistance (5 Ohm vs. 6.48 Ohm), and extended operating temperature range (-40°C ~ 125°C vs. -40°C ~ 85°C).

The 744062102 is an active product with ROHS3 compliance and REACH unaffected status, ensuring long-term availability and regulatory alignment. Physical dimensions are slightly smaller (6.80mm x 6.80mm vs. 7.20mm x 7.20mm), which may require PCB layout verification for existing designs. The reduced height (2.50mm vs. 3.15mm) provides additional design flexibility.

Frequently Asked Questions (FAQ)

Q: Can the 744062102 directly replace the 29L105C in existing designs?

A: The 744062102 meets all critical electrical parameters for substitution. Physical dimensions are slightly smaller, requiring verification that the PCB footprint accommodates the 6.80mm x 6.80mm package. Height reduction from 3.15mm to 2.50mm is beneficial for space-constrained applications.

Q: What are the key differences between these inductors?

A: Both parts maintain 1 mH inductance and shielded construction. The 744062102 offers superior performance with 160 mA current rating versus 140 mA, lower DC resistance (5 Ohm vs. 6.48 Ohm), and broader operating temperature range (-40°C ~ 125°C vs. -40°C ~ 85°C). The 744062102 uses drum core ferrite construction versus the 29L105C wirewound design.

Q: Is the 744062102 available in the same packaging format?

A: The 744062102 is supplied in Tape & Reel (TR) packaging, while the 29L105C was nonstandard. Both are surface mount components compatible with automated assembly processes.

Q: What compliance certifications apply to the substitute part?

A: The 744062102 is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and distribution.