Equivalent & Substitute Parts for 18R472C

Part Overview

The 18R472C is a 4.72 µH unshielded wirewound inductor manufactured by Murata Power Solutions Inc., designed for through-hole mounting applications. This component is rated for 5.35 A continuous current with a maximum DC resistance of 9mOhm and operates across a temperature range of 0°C to 70°C. The part is currently active in production with ROHS3 compliance and maintains 1180 pieces in new original stock inventory.

Substitute components become necessary when the primary part experiences supply constraints, extended lead times, or when design flexibility permits selection from qualified alternatives that meet the same electrical and mechanical requirements.

Substiute Parts

18R472C

Murata Power Solutions Inc.In Stock: 125718R472C Datasheet

Current PartRFQ

RLB1314-4R7ML

Bourns Inc.In Stock: 2529RLB1314-4R7ML Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 18R472C is determined by the following critical parameters:

Electrical Compatibility Criteria:

• Inductance value within tolerance band (4.72 µH ±10% = 4.248 µH to 5.192 µH)
• DC resistance at or below 9mOhm maximum
• Current rating sufficient for application requirements
• Unshielded configuration to maintain electromagnetic characteristics

Mechanical Compatibility Criteria:

• Through-hole mounting type
• Radial, vertical cylinder package configuration
• Physical dimensions compatible with PCB layout constraints

Regulatory & Compliance Criteria:

• ROHS3 compliance
• REACH unaffected status
• EAR99 export classification

The RLB1314-4R7ML from Bourns Inc. qualifies as a substitute based on these parameters, with inductance value of 4.7 µH falling within the acceptable tolerance range and matching all mechanical and regulatory requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the 18R472C and RLB1314-4R7ML maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for equivalent component selection. The RLB1314-4R7ML provides an extended operating temperature range of -40°C to 105°C compared to the 18R472C range of 0°C to 70°C, offering broader environmental applicability.

The primary distinction between these components lies in current rating specification. The 18R472C is rated for 5.35 A continuous current, while the RLB1314-4R7ML is rated for 4.7 A. Circuit designs operating at or above 4.7 A but below 5.35 A require evaluation of thermal and reliability margins specific to the application. Both components share identical maximum DC resistance of 9mOhm and unshielded configuration, ensuring consistent electrical performance within their respective current ratings.

Frequently Asked Questions (FAQ)

Q: Can the RLB1314-4R7ML directly replace the 18R472C in all applications?

A: Direct substitution is valid when circuit current requirements do not exceed 4.7 A. Applications demanding the full 5.35 A rating of the 18R472C require alternative component selection or thermal analysis of the substitute part under actual operating conditions.

Q: What is the inductance tolerance impact of substitution?

A: The 18R472C specifies ±10% tolerance (4.248 µH to 5.192 µH), while the RLB1314-4R7ML specifies ±20% tolerance (3.76 µH to 5.64 µH). Both values fall within overlapping ranges. Circuit designs with tight inductance specifications must account for the wider tolerance band of the substitute component.

Q: Are the physical dimensions compatible?

A: Both components use radial, vertical cylinder packaging for through-hole mounting. The 18R472C measures 0.539" diameter with 0.626" seated height, while the RLB1314-4R7ML measures 0.461" diameter with 0.512" seated height. The substitute component is physically smaller and will fit within the same PCB footprint space.

Q: Do both components meet the same regulatory standards?

A: Yes. Both the 18R472C and RLB1314-4R7ML are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export purposes.

Q: What is the difference in operating temperature ranges?

A: The 18R472C operates from 0°C to 70°C, while the RLB1314-4R7ML operates from -40°C to 105°C. Applications requiring operation below 0°C or above 70°C must use the RLB1314-4R7ML or identify alternative components.