Equivalent & Substitute Parts for 13R475C

Part Overview

The 13R475C is a 4.7 mH unshielded wirewound inductor manufactured by Murata Power Solutions, designed for through-hole mounting applications. This component operates across a temperature range of -40°C to 85°C with a maximum DC resistance of 9.3 Ohm and supports a current rating of 160 mA. 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 power supply and signal processing circuits.

Substitute parts become necessary when the primary component experiences supply constraints, extended lead times, or when design requirements permit operation within broader electrical or thermal specifications. The substitute identified maintains the core inductance value and mounting configuration while offering enhanced current handling capability and extended operating temperature range.

Substiute Parts

13R475C

Murata Power SolutionsIn Stock: 113213R475C Datasheet

Current PartRFQ

RLB9012-472KL

Bourns Inc.In Stock: 6286RLB9012-472KL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 13R475C is determined by the following critical parameters:

• Inductance Value: Must be 4.7 mH with ±10% tolerance to maintain circuit performance
• Mounting Configuration: Must support through-hole radial, vertical cylinder mounting
• Current Rating: Substitute must support minimum 160 mA; higher ratings are acceptable
• DC Resistance: Substitute DCR must not exceed design limits for the application circuit
• Operating Temperature: Substitute must function within or exceed the -40°C to 85°C range
• Shielding Configuration: Unshielded topology must be maintained for electromagnetic compatibility
• Compliance: RoHS3 compliance required for regulatory alignment

The RLB9012-472KL from Bourns Inc. qualifies as a direct substitute based on matching inductance, tolerance, mounting type, package configuration, and shielding characteristics while providing enhanced current capacity and extended thermal operating range.

Parameter Comparison

Engineering Selection Recommendations

The RLB9012-472KL is a qualified substitute for the 13R475C based on the following engineering criteria:

Electrical Compatibility: Both components maintain identical inductance values at 4.7 mH with ±10% tolerance, ensuring circuit performance equivalence. The substitute's higher current rating of 240 mA provides operational margin above the 160 mA requirement of the primary part.

Thermal Performance: The RLB9012-472KL extends the operating temperature range to -55°C to 125°C, exceeding the 13R475C specification of -40°C to 85°C. This enhancement supports deployment in applications with broader environmental requirements.

Regulatory Compliance: Both components maintain ROHS3 compliance and REACH unaffected status, satisfying modern regulatory requirements for electronic component procurement.

Physical Integration: Matching through-hole radial vertical cylinder package configurations ensure direct mechanical compatibility in existing PCB layouts without redesign.

DC Resistance Consideration: The substitute exhibits higher DC resistance at 13.6 Ohm maximum compared to 9.3 Ohm for the primary part. Circuit designers must verify that this resistance increase does not exceed application-specific power dissipation or voltage drop tolerances.

Frequently Asked Questions (FAQ)

Q: Can the RLB9012-472KL replace the 13R475C in all applications?

A: The RLB9012-472KL is electrically and mechanically compatible for applications where the 160 mA current requirement of the 13R475C is the limiting design parameter. However, the higher DC resistance of the substitute (13.6 Ohm vs. 9.3 Ohm) must be evaluated against circuit power dissipation and voltage drop specifications. Applications sensitive to inductor losses require verification before substitution.

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

A: The RLB9012-472KL exhibits 4.3 Ohm additional DC resistance compared to the 13R475C. In circuits carrying the rated 160 mA current, this results in approximately 0.688 mW additional power dissipation. Circuit designers must confirm this increase remains within acceptable thermal and efficiency margins for the target application.

Q: Are the physical dimensions compatible for PCB layout?

A: Both components use radial vertical cylinder packages with similar form factors. The 13R475C measures 0.374" diameter by 0.531" height, while the RLB9012-472KL measures 0.354" diameter by 0.480" height. The substitute is slightly smaller and will fit within existing PCB footprints designed for the primary part.

Q: What is the difference between wirewound and drum core wirewound construction?

A: The 13R475C uses standard wirewound construction, while the RLB9012-472KL employs drum core wirewound construction with ferrite core material. Both topologies maintain unshielded configurations and deliver equivalent inductance performance. The drum core design contributes to the substitute's enhanced current rating and thermal stability.

Q: Are there packaging differences between the two parts?

A: The 13R475C is supplied in bulk packaging, while the RLB9012-472KL is supplied in tray packaging. Both formats are standard for through-hole components and do not affect electrical or mechanical compatibility. Procurement and assembly processes may require adjustment based on packaging format preferences.