74454147 Equivalent & Substitute Parts

Part Overview

The Würth Elektronik 74454147 is a 47 µH shielded drum core wirewound inductor rated for 1 A continuous current with a maximum DC resistance of 190 mOhm. This component is designed for surface mount applications requiring compact form factor and electromagnetic shielding. The part is Active status and ROHS3 compliant, making it suitable for modern electronic assemblies. Equivalent parts are identified when supply constraints, lead time requirements, or design flexibility necessitate alternative sourcing from qualified manufacturers.

Substiute Parts

74454147

Würth ElektronikIn Stock: 593874454147 Datasheet

Current PartRFQ

SRR1005-470Y

Bourns Inc.In Stock: 2428SRR1005-470Y Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 74454147 is determined by strict equivalence across the following critical parameters:

Inductance value must match at 47 µH with ±15% tolerance. Current rating must support minimum 1 A continuous operation. DC resistance must not exceed 190 mOhm maximum. Shielding configuration must be present to maintain electromagnetic isolation. Physical dimensions must conform to 12.70 mm x 10.00 mm x 5.20 mm maximum height to ensure PCB layout compatibility. Operating temperature range must encompass -40°C to 125°C. Surface mount configuration and nonstandard package type must be maintained. RoHS3 compliance and MSL 1 rating are required for regulatory and manufacturing process compatibility.

The Bourns Inc. SRR1005-470Y meets all substitution criteria across these parameters.

Parameter Comparison

Engineering Selection Recommendations

Both the 74454147 and SRR1005-470Y are Active status components with ROHS3 compliance and REACH unaffected designation, qualifying them for equivalent use in regulated applications. Selection between these parts should be based on supply availability, lead time, and cost considerations. The SRR1005-470Y exhibits a saturation current of 1.3 A compared to 1.4 A for the 74454147; this difference remains within acceptable margins for applications operating at or below the 1 A rated current. Both components maintain identical electrical performance across inductance, tolerance, DC resistance, and thermal operating range. Packaging and physical dimensions are identical, ensuring direct PCB layout compatibility without redesign.

Frequently Asked Questions (FAQ)

Q: Can SRR1005-470Y replace 74454147 in existing designs? A: Yes. Both parts are electrically and mechanically equivalent across all critical parameters including inductance, current rating, DC resistance, physical dimensions, and operating temperature range. Direct substitution is possible without circuit modification.

Q: What is the significance of the saturation current difference (1.4 A vs 1.3 A)? A: Saturation current indicates the point at which inductor core material begins to saturate, reducing inductance. Since both parts are rated for 1 A continuous operation, the saturation current difference does not affect performance in applications operating within the 1 A specification.

Q: Are there any compliance or certification differences? A: No. Both parts carry identical RoHS3 compliance, MSL 1 rating, and REACH unaffected status. They are suitable for equivalent use in regulated manufacturing environments.

Q: Do the parts have identical PCB footprints? A: Yes. Both components share identical dimensions of 12.70 mm length, 10.00 mm width, and 5.20 mm maximum height. No PCB layout modifications are required for substitution.

Q: What is the tolerance specification and how does it affect circuit design? A: Both parts carry ±15% inductance tolerance. Circuit designs must account for this tolerance range in filter, impedance matching, or resonant frequency calculations.

Q: Are there differences in core material? A: The 74454147 core material is not specified in the provided data. The SRR1005-470Y uses ferrite core material. Both achieve equivalent electrical performance at the specified operating parameters.