18R473C Equivalent & Substitute Parts

Part Overview

The 18R473C is a 47 µH unshielded wirewound inductor manufactured by Murata Power Solutions Inc., rated for 1.65 A with a maximum DC resistance of 55mOhm. This through-hole radial component operates across a temperature range of 0°C to 70°C and is classified as Active product status with ROHS3 compliance. Equivalent parts are identified when electrical specifications and mechanical form factors align within acceptable tolerances for the intended application circuit.

Substiute Parts

18R473C

Murata Power Solutions Inc.In Stock: 90818R473C Datasheet

Current PartRFQ

RLB1314-470KL

Bourns Inc.In Stock: 2094RLB1314-470KL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The RLB1314-470KL qualifies as an equivalent substitute based on the following alignment of critical parameters:

• Inductance value matches at 47 µH with identical ±10% tolerance
• Current rating of 1.5 A remains within acceptable operating margin relative to the 1.65 A specification
• DC resistance of 56mOhm Max is comparable to the 55mOhm Max specification
• Both components feature unshielded construction with through-hole radial mounting in vertical cylinder configuration
• Both maintain ROHS3 compliance and REACH Unaffected status
• Inductance frequency test performed at identical 1 kHz specification

Parameter Comparison

Engineering Selection Recommendations

Both the 18R473C and RLB1314-470KL maintain Active product status with full ROHS3 and REACH compliance, ensuring regulatory alignment for current and future applications. The RLB1314-470KL provides an extended operating temperature range of -40°C to 105°C compared to the 0°C to 70°C specification of the 18R473C, offering broader environmental capability. The current rating differential of 0.15 A (1.65 A versus 1.5 A) and DCR variance of 1mOhm represent negligible deviations within standard engineering tolerances for inductor applications. Physical dimensions of the Bourns component are slightly smaller, which may present advantages in space-constrained PCB layouts while maintaining identical mounting and package classification.

Frequently Asked Questions (FAQ)

Q: Can the RLB1314-470KL directly replace the 18R473C in existing designs?

A: Yes, provided the circuit design operates within the 1.5 A current rating and does not require the specific temperature range below 0°C. Both components share identical inductance, tolerance, and unshielded radial through-hole configuration.

Q: What is the significance of the current rating difference?

A: The 18R473C is rated for 1.65 A while the RLB1314-470KL is rated for 1.5 A. If the application circuit draws current at or above 1.5 A, the Bourns substitute must be verified to operate within its specified limits. The 0.15 A margin represents the substitution boundary.

Q: Are there physical mounting considerations?

A: The RLB1314-470KL is physically smaller (0.461" diameter, 0.512" height) compared to the 18R473C (0.539" diameter, 0.626" height). Both use radial through-hole mounting in vertical cylinder configuration. PCB footprints designed for the larger Murata component will accommodate the smaller Bourns part without modification.

Q: Do both parts meet current regulatory requirements?

A: Both the 18R473C and RLB1314-470KL are ROHS3 compliant and REACH Unaffected, meeting current regulatory standards for electronic component manufacturing and use.

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

A: The 18R473C uses standard wirewound construction, while the RLB1314-470KL uses drum core wirewound construction with ferrite material. Both achieve the specified 47 µH inductance and unshielded classification. The drum core design in the Bourns component contributes to its higher Q factor at 2.52 MHz compared to the Murata component at 500 kHz.