29L474C Equivalent & Substitute Parts

Part Overview

The 29L474C is a 470 µH shielded wirewound inductor manufactured by Murata Power Solutions Inc., rated for 220 mA maximum current with a DC resistance of 2.41Ohm. This component is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. The part is housed in a nonstandard surface mount package measuring 7.20mm x 7.20mm with a maximum seated height of 3.15mm, designed for applications requiring shielded inductive filtering in the 10 kHz frequency range.

Substiute Parts

29L474C

Murata Power Solutions Inc.In Stock: 113529L474C Datasheet

Current PartRFQ

PA4301.474NLT

Pulse ElectronicsIn Stock: 1120PA4301.474NLT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 29L474C is determined by strict equivalence across the following critical parameters:

• Inductance Value: 470 µH (exact match required)
• Current Rating: Minimum 220 mA (equal or higher acceptable)
• DC Resistance: Maximum 2.41Ohm (lower or equal acceptable)
• Shielding: Shielded construction required
• Mounting Type: Surface mount configuration
• Package Footprint: 7.20mm x 7.20mm base dimensions
• Operating Temperature: Minimum -40°C ~ 85°C range

The PA4301.474NLT from Pulse Electronics meets these substitution criteria with compatible electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

The PA4301.474NLT is a direct functional substitute for the 29L474C. The substitute part maintains identical inductance and footprint dimensions while providing superior current rating (230 mA vs. 220 mA) and extended operating temperature range (-40°C ~ 125°C vs. -40°C ~ 85°C). The PA4301.474NLT carries active product status with RoHS3 compliance, ensuring long-term availability and regulatory alignment for new designs. The marginal increase in DC resistance (2.73Ohm vs. 2.41Ohm) remains within acceptable tolerance for most filtering applications. Both components share identical moisture sensitivity classification and REACH compliance status.

Frequently Asked Questions (FAQ)

Q: Can the PA4301.474NLT replace the 29L474C in existing designs?

A: Yes. Both components share identical inductance (470 µH), footprint (7.20mm x 7.20mm), and shielding characteristics. The substitute part provides higher current rating and extended temperature range, making it functionally compatible for direct substitution.

Q: What is the impact of the increased DC resistance in the PA4301.474NLT?

A: The PA4301.474NLT has a maximum DC resistance of 2.73Ohm compared to 2.41Ohm in the 29L474C. This 0.32Ohm difference represents approximately 13% higher resistance. Circuit designs must account for increased power dissipation in high-current applications.

Q: Are there package compatibility concerns?

A: Both parts use identical base footprint dimensions (7.20mm x 7.20mm). The PA4301.474NLT has a slightly lower seated height (3.00mm vs. 3.15mm), which presents no compatibility issues for standard PCB layouts.

Q: What compliance certifications apply to the substitute part?

A: The PA4301.474NLT is RoHS3 compliant and REACH unaffected. Both the original and substitute parts carry MSL 1 (Unlimited) moisture sensitivity classification.

Q: Why is the 29L474C listed as obsolete?

A: The 29L474C is an obsolete product from Murata Power Solutions Inc. The PA4301.474NLT from Pulse Electronics is an active product with confirmed inventory availability, making it the recommended choice for new production and design implementations.