74476032C Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 74476032C is a 470 nH unshielded drum core wirewound inductor rated for 250 mA with a maximum DC resistance of 2.3Ohm. This component is designed for surface mount applications in the 0805 package form factor. The part is currently active in production and ROHS3 compliant, making it suitable for modern electronic assemblies requiring compact inductance solutions in RF and high-frequency circuits.

Equivalent and substitute parts are identified when alternative manufacturers offer inductors with matching or superior electrical characteristics within the same package envelope and functional specifications.

Substiute Parts

74476032C

Würth ElektronikIn Stock: 424574476032C Datasheet

Current PartRFQ

CW201212-R47J

Bourns Inc.In Stock: 60403CW201212-R47J Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74476032C is determined by the following critical parameters:

• Inductance value of 470 nH with ±5% tolerance
• Current rating of 250 mA or higher
• Surface mount 0805 package compatibility
• Unshielded drum core wirewound construction
• Operating temperature range of -40°C to 125°C or wider
• ROHS3 compliance and REACH unaffected status

The Bourns CW201212-R47J meets all substitution criteria. While the core material differs (ferrite versus ceramic), both materials are acceptable for unshielded drum core inductors at this inductance value and frequency range. The substitute part demonstrates superior DC resistance (1.72Ohm versus 2.3Ohm maximum), which represents an improvement in efficiency characteristics.

Parameter Comparison

Engineering Selection Recommendations

Both the 74476032C and CW201212-R47J are active production components with ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement.

The CW201212-R47J offers a measurable advantage in DC resistance performance at 1.72Ohm compared to the 74476032C maximum of 2.3Ohm, resulting in lower power dissipation in applications where current flow is continuous. The substitute part also demonstrates a higher Q factor at 100MHz (33 versus 30), indicating improved efficiency in RF applications.

Both parts maintain identical inductance values, current ratings, operating temperature ranges, and self-resonant frequencies. The physical dimensions are compatible within the 0805 package specification, with the Bourns component measuring slightly smaller (2.10mm x 1.50mm versus 2.29mm x 1.70mm).

Selection between these parts should be based on availability, cost considerations, and specific application requirements for DC resistance performance.

Frequently Asked Questions (FAQ)

Q: Can the CW201212-R47J directly replace the 74476032C in existing designs?

A: Yes. Both parts share identical inductance values (470 nH), tolerance (±5%), current ratings (250 mA), operating temperature ranges (-40°C to 125°C), and package form factors (0805). Physical dimensions are compatible within standard PCB assembly tolerances.

Q: What is the significance of the different core materials (ceramic versus ferrite)?

A: Both ceramic and ferrite cores are acceptable for unshielded drum core inductors at 470 nH. The ferrite core in the CW201212-R47J contributes to its lower DC resistance and higher Q factor, representing performance improvements rather than incompatibilities.

Q: Are there any compliance or regulatory differences between these parts?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical ECCN (EAR99) and HTSUS (8504.50.8000) classifications.

Q: How do the DC resistance values affect circuit performance?

A: The CW201212-R47J at 1.72Ohm generates less heat than the 74476032C at 2.3Ohm maximum when carrying the same current. In applications with sustained 250 mA operation, this difference reduces power dissipation and thermal stress on the component.

Q: Are the physical dimensions interchangeable for PCB layout purposes?

A: Yes. Both parts conform to the 0805 package standard. The CW201212-R47J is slightly smaller (2.10mm x 1.50mm height 1.50mm versus 74476032C at 2.29mm x 1.70mm height 1.48mm), but these differences fall within standard PCB assembly specifications and do not require layout modifications.

Q: What is the difference in self-resonant frequency between these parts?

A: Both parts share an identical self-resonant frequency of 375MHz, indicating equivalent high-frequency performance characteristics and suitable application range.