74476013C 33nH 500mA Unshielded Wirewound Inductor Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 74476013C is a 33 nH unshielded drum core wirewound inductor rated for 500 mA continuous current with a maximum DC resistance of 270 mOhm. This component is designed for high-frequency RF and signal integrity applications requiring low inductance values in compact surface mount packages. The part is currently active in production with full RoHS3 compliance and unlimited moisture sensitivity rating. Equivalent and substitute parts are identified for applications requiring alternative sourcing, inventory availability, or specific performance characteristics within the defined electrical and mechanical parameter space.

Substiute Parts

74476013C

Würth ElektronikIn Stock: 242774476013C Datasheet

Current PartRFQ

CW201212-33NJ

Bourns Inc.In Stock: 6985CW201212-33NJ Datasheet

DirectRFQ

36502A33NJTDG

TE Connectivity Passive ProductIn Stock: 317136502A33NJTDG Datasheet

MFR RecommendedRFQ

AISC-0805-R033J-T

Abracon LLCIn Stock: 4377AISC-0805-R033J-T Datasheet

MFR RecommendedRFQ

LQW2BAS33NJ00L

Murata ElectronicsIn Stock: 9048LQW2BAS33NJ00L Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74476013C is determined by strict equivalence across the following critical parameters:

Primary Matching Criteria:

• Inductance value: 33 nH ±5% tolerance
• Current rating: 500 mA minimum
• DC resistance: 270 mOhm maximum
• Package: 0805 (2012/2015 Metric equivalent)
• Mounting type: Surface Mount
• Operating temperature range: -40°C to 125°C minimum
• Shielding configuration: Unshielded
• Test frequency: 250 MHz

Secondary Compatibility Factors:

• Q factor at 500 MHz: 60 or higher
• Self-resonant frequency: 2.0 GHz or higher
• RoHS3 compliance status
• Moisture sensitivity level: 1 (Unlimited)

All identified substitute parts meet or exceed these criteria within the specified electrical and mechanical parameter boundaries.

Parameter Comparison

Engineering Selection Recommendations

CW201212-33NJ (Bourns Inc.): This substitute offers superior DC resistance performance at 150 mOhm maximum, representing a 44% reduction compared to the 74476013C specification. The higher self-resonant frequency of 2.4 GHz provides extended bandwidth capability. Full RoHS3 compliance and active product status support long-term availability. Suitable for applications where lower parasitic resistance is beneficial and thermal performance is a design consideration.

36502A33NJTDG (TE Connectivity Passive Product): This part provides exact electrical parameter matching with 270 mOhm DCR and 2.05 GHz SRF, maintaining identical performance characteristics to the 74476013C. The component carries AEC-Q200 automotive qualification. However, RoHS non-compliance status requires verification against end-application regulatory requirements before selection.

AISC-0805-R033J-T (Abracon LLC): This substitute maintains full electrical equivalence with 270 mOhm DCR and meets all primary matching criteria. RoHS3 compliance and active product status ensure regulatory alignment and supply continuity. Dimensional specifications remain within 0805 package tolerance bands. Suitable for direct replacement in RoHS-compliant applications.

LQW2BAS33NJ00L (Murata Electronics): This part achieves full electrical equivalence with 270 mOhm DCR and extends the operating temperature range to -55°C, providing enhanced low-temperature performance. The air core construction differs from the ceramic core design of the main part but maintains equivalent electrical performance at specified test frequencies. RoHS3 compliance and highest inventory availability (8988 Pcs) support supply security. Extended temperature range supports applications requiring sub-zero operation.

Frequently Asked Questions (FAQ)

Q: Can CW201212-33NJ be used as a direct replacement for 74476013C?

A: CW201212-33NJ meets all primary electrical and mechanical substitution criteria. The 150 mOhm DCR is lower than the 270 mOhm specification, which reduces power dissipation and improves thermal performance. This represents an improvement rather than a compromise. Verification of circuit performance under the lower resistance condition is recommended for critical applications.

Q: What is the difference between ceramic drum core and air core inductors?

A: Both core types achieve the specified 33 nH inductance and 60 Q factor at 500 MHz when properly designed. Ceramic cores provide mechanical stability and compact form factors. Air cores offer lower dielectric losses in some frequency ranges. For the 33 nH value at 250 MHz test frequency, both constructions deliver equivalent performance within the specified parameters.

Q: Is 36502A33NJTDG suitable for RoHS-regulated applications?

A: 36502A33NJTDG carries RoHS non-compliant status. Applications subject to RoHS3 regulatory requirements must use alternative parts: 74476013C, CW201212-33NJ, AISC-0805-R033J-T, or LQW2BAS33NJ00L, all of which maintain full RoHS3 compliance.

Q: Does the 0805 (2015 Metric) package differ from 0805 (2012 Metric)?

A: Both designations refer to the same 0805 package footprint (2.0mm × 1.5mm nominal). The metric year designation reflects component design standards but does not affect PCB footprint compatibility. All listed substitutes are mechanically compatible within standard 0805 land pattern tolerances.

Q: Which substitute offers the best thermal performance?

A: CW201212-33NJ provides the lowest DC resistance at 150 mOhm maximum, resulting in the lowest I²R power dissipation at rated current. At 500 mA, this represents approximately 37.5 mW dissipation compared to 67.5 mW for parts rated at 270 mOhm, a 44% reduction in thermal load.

Q: Can LQW2BAS33NJ00L be used in applications requiring -55°C operation?

A: LQW2BAS33NJ00L is rated for -55°C to 125°C operation, extending the lower temperature limit by 15°C compared to the 74476013C specification of -40°C to 125°C. This part is suitable for applications requiring sub-zero environmental operation within the specified range.