18474C Equivalent & Substitute Parts

Part Overview

The Murata Power Solutions 18474C is a 470 µH unshielded wirewound inductor rated for 600 mA with a maximum DC resistance of 465mOhm, designed for through-hole axial mounting. This component is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity. Substitute parts must maintain the same inductance value, tolerance, and mounting configuration while meeting or exceeding the electrical performance specifications of the original design.

Substiute Parts

18474C

Murata Power Solutions Inc.In Stock: 77318474C Datasheet

Current PartRFQ

5900-471-RC

Bourns Inc.In Stock: 33595900-471-RC Datasheet

MFR RecommendedRFQ

AIAP-02-471K

Abracon LLCIn Stock: 898AIAP-02-471K Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 18474C is determined by the following critical parameters:

• Inductance Value: Must be 470 µH with ±10% tolerance
• Mounting Configuration: Must be through-hole axial package
• Shielding Type: Must be unshielded
• Current Rating: Must support minimum 600 mA operation
• DC Resistance: Lower or equal DCR values are acceptable; higher values may impact circuit performance
• Regulatory Compliance: RoHS and REACH compliance status must be documented

The substitute parts listed below meet these core electrical and mechanical requirements while offering active product status and improved availability.

Parameter Comparison

Engineering Selection Recommendations

5900-471-RC (Bourns Inc.) is the primary substitute for the 18474C. This part exceeds the original current rating specification at 1 A versus 600 mA, provides superior DC resistance performance at 420mOhm Max, and operates across an extended temperature range of -55°C to 105°C. The part maintains active product status with ROHS3 compliance and documented saturation current specification of 1.2A, ensuring long-term availability and regulatory alignment.

AIAP-02-471K (Abracon LLC) serves as an alternative substitute with current rating of 590 mA, which approaches the original 600 mA specification. This part is active and ROHS3 compliant. However, the DC resistance specification of 1.15Ohm Max is significantly higher than the original 465mOhm Max, which may result in increased power dissipation in the circuit. This part is suitable only when thermal performance and power loss are not critical design constraints.

Both substitute parts are RoHS and REACH compliant, ensuring regulatory compliance for new designs and production runs.

Frequently Asked Questions (FAQ)

Q: Can the 5900-471-RC directly replace the 18474C in existing designs?

A: Yes. The 5900-471-RC maintains the same 470 µH inductance value, ±10% tolerance, unshielded configuration, and through-hole axial mounting. The higher current rating (1 A vs. 600 mA) and lower DC resistance (420mOhm vs. 465mOhm) represent performance improvements. The extended operating temperature range (-55°C to 105°C vs. 0°C to 70°C) provides additional design margin.

Q: What are the limitations of the AIAP-02-471K substitute?

A: The AIAP-02-471K meets the core inductance and mounting requirements. However, the DC resistance of 1.15Ohm Max is approximately 2.5 times higher than the original specification. This increased resistance will generate additional heat during operation. Applications sensitive to power dissipation or thermal performance should use the 5900-471-RC instead.

Q: Are both substitute parts available in the same packaging format?

A: Both substitutes are through-hole axial components. The 5900-471-RC is supplied in Tray packaging, while the AIAP-02-471K is supplied in Bulk packaging. Physical dimensions differ slightly between parts; verify PCB layout compatibility before implementation.

Q: Do the substitute parts meet current regulatory requirements?

A: Yes. Both the 5900-471-RC and AIAP-02-471K are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards for electronic component manufacturing and distribution.