Murata Power Solutions 23470C Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions 23470C is a 47 µH unshielded wirewound surface mount inductor rated for 550 mA continuous current with a maximum DC resistance of 683mOhm. This component is part of the 2300 series and maintains Active product status with full RoHS3 compliance. Equivalent and substitute parts are identified when design requirements permit tolerance in current rating, DC resistance, or operating temperature range while maintaining the core inductance value and surface mount package compatibility.

Substiute Parts

23470C

Murata Power Solutions Inc.In Stock: 103523470C Datasheet

Current PartRFQ

SDR0403-470KL

Bourns Inc.In Stock: 2825SDR0403-470KL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 23470C is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 47 µH (exact match required)
• Mounting type: Surface Mount (exact match required)
• Package footprint: 4.50mm x 4.00mm (exact match required)
• Shielding configuration: Unshielded (exact match required)

Secondary Tolerance Parameters:

• Current rating: Substitute must meet or exceed 550 mA minimum
• DC resistance: Substitute must not exceed 683mOhm maximum
• Operating temperature: Substitute must support -40°C minimum and 85°C maximum
• RoHS compliance: ROHS3 Compliant (required for equivalent status)

The Bourns SDR0403-470KL qualifies as a direct substitute based on matching all primary criteria and meeting or exceeding secondary electrical specifications.

Parameter Comparison

Engineering Selection Recommendations

Murata Power Solutions 23470C is the primary selection when the application requires the lowest DC resistance specification (683mOhm maximum) and the full 550 mA current rating. This part maintains Active product status with established supply availability.

Bourns SDR0403-470KL serves as a substitute when design margins permit the following deviations:

• Current rating tolerance of 10 mA below the original specification (540 mA vs. 550 mA)
• DC resistance increase of 157mOhm (840mOhm vs. 683mOhm)
• PCB height clearance accommodation for an additional 0.30mm seated height

Both parts maintain ROHS3 compliance, unlimited moisture sensitivity rating, and identical footprint dimensions. The Bourns substitute provides extended operating temperature range to 125°C, which may benefit thermal margin in certain applications.

Frequently Asked Questions (FAQ)

Q: Can the Bourns SDR0403-470KL replace the Murata 23470C in all applications?

A: Substitution is valid only when the application can tolerate a 10 mA reduction in current rating (from 550 mA to 540 mA) and a 157mOhm increase in DC resistance (from 683mOhm to 840mOhm). PCB layout must accommodate the additional 0.30mm height. Verify these parameters against your circuit requirements before implementation.

Q: Are there package compatibility concerns between these parts?

A: Both parts share identical footprint dimensions of 4.50mm x 4.00mm and use surface mount technology. The Bourns part has a maximum seated height of 3.50mm compared to 3.20mm for the Murata part. Confirm PCB clearance specifications to ensure no interference with adjacent components or enclosure constraints.

Q: What is the impact of the higher DC resistance in the Bourns substitute?

A: The Bourns SDR0403-470KL exhibits 157mOhm additional DC resistance compared to the Murata 23470C. This increases resistive losses in the inductor, resulting in higher heat dissipation at equivalent current levels. Calculate power loss using P = I²R to determine if thermal performance remains acceptable for your application.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the Murata 23470C and Bourns SDR0403-470KL are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Both carry moisture sensitivity level 1 (unlimited). Compliance documentation is equivalent for regulatory purposes.

Q: What is the inductance tolerance specification for the substitute part?

A: The Bourns SDR0403-470KL carries an inductance tolerance of ±10%. The Murata 23470C tolerance specification was not provided in the available data. Confirm tolerance requirements for your application and request detailed specifications from the manufacturer if precision matching is critical.