Equivalent & Substitute Parts for 18R475C

Part Overview

The 18R475C is a 4.7 mH fixed wirewound inductor manufactured by Murata Power Solutions Inc., designed for through-hole mounting applications. This unshielded radial component operates at 200 mA maximum current with a DC resistance of 4.6 Ohm maximum. The part is currently active in production and ROHS3 compliant, making it suitable for modern electronic assemblies requiring fixed inductance filtering, energy storage, or signal conditioning in the 0°C to 70°C operating range.

Equivalent substitute parts may be required due to inventory availability, lead time constraints, or design flexibility needs while maintaining functional compatibility within specified electrical and mechanical parameters.

Substiute Parts

18R475C

Murata Power Solutions Inc.In Stock: 91918R475C Datasheet

Current PartRFQ

RLB1314-472KL

Bourns Inc.In Stock: 5501RLB1314-472KL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 18R475C is determined by the following critical parameters:

• Inductance Value: Must be 4.7 mH ±10% tolerance
• Current Rating: Substitute must support minimum 200 mA operation
• DC Resistance: Must not exceed 4.6 Ohm maximum
• Mounting Configuration: Through-hole radial, vertical cylinder package required
• Shielding Type: Unshielded construction
• Compliance: ROHS3 compliant status required

The RLB1314-472KL from Bourns Inc. qualifies as an equivalent substitute based on matching inductance value, tolerance specification, unshielded construction, and through-hole radial mounting. However, the current rating differential and DC resistance variance require engineering evaluation for specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

Both the 18R475C and RLB1314-472KL maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for modern electronics manufacturing. The 18R475C provides the specified 200 mA current capacity with lower DC resistance at 4.6 Ohm maximum. The RLB1314-472KL offers extended operating temperature range (-40°C to 105°C) and ferrite drum core construction, with trade-offs including reduced current rating (140 mA) and increased DC resistance (5.6 Ohm maximum).

Selection between these parts depends on application current requirements and thermal operating conditions. Applications requiring the full 200 mA rating or lower resistance characteristics should use the 18R475C. Applications operating within the 140 mA current envelope and benefiting from extended temperature range may utilize the RLB1314-472KL.

Frequently Asked Questions (FAQ)

Q: Can the RLB1314-472KL replace the 18R475C in all applications?

A: The RLB1314-472KL is functionally equivalent for inductance value and tolerance. However, the reduced current rating (140 mA versus 200 mA) and increased DC resistance (5.6 Ohm versus 4.6 Ohm) require verification that the application does not exceed 140 mA continuous current and can tolerate the additional 1.0 Ohm resistance increase.

Q: What are the physical dimension differences?

A: The 18R475C measures 0.539" diameter (13.70 mm) with 0.626" seated height (15.90 mm). The RLB1314-472KL measures 0.461" diameter (11.70 mm) with 0.512" seated height (13.00 mm). Both use radial lead configuration suitable for through-hole PCB mounting.

Q: Are both parts available in the same packaging?

A: Both parts are supplied in bulk packaging as through-hole radial, vertical cylinder components. No tape-and-reel or alternative packaging options are specified for these part numbers.

Q: What is the inductance tolerance specification?

A: Both the 18R475C and RLB1314-472KL maintain ±10% inductance tolerance at 1 kHz test frequency, ensuring consistent performance across the specified tolerance band.

Q: Which part has better high-temperature performance?

A: The RLB1314-472KL operates across -40°C to 105°C, providing extended temperature range compared to the 18R475C operating range of 0°C to 70°C. Selection depends on application thermal requirements.