LD2-471-R Equivalent & Substitute Parts

Part Overview

The LD2-471-R is a 470 µH unshielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 740 mA continuous current with a maximum DC resistance of 1.96 Ohm and operates across the temperature range of -40°C to 125°C. The part is RoHS Compliant and carries an MSL rating of 1 (Unlimited), indicating robust moisture tolerance for standard storage and handling conditions. As an active product with established inventory availability, the LD2-471-R serves applications requiring fixed inductance in power conversion, filtering, and signal conditioning circuits. Equivalent and substitute parts are identified to support procurement flexibility, design redundancy, and supply chain continuity.

Substiute Parts

LD2-471-R

Eaton - Electronics DivisionIn Stock: 856LD2-471-R Datasheet

Current PartRFQ

SDR0805-471KL

Bourns Inc.In Stock: 6231SDR0805-471KL Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LD2-471-R is determined by strict equivalence across the following critical parameters:

Primary Equivalence Criteria:

• Inductance value: 470 µH ±10%
• DC resistance: 1.96 Ohm maximum
• Core type: Ferrite, unshielded drum core
• Mounting: Surface mount, nonstandard package
• Temperature range: -40°C to 125°C minimum
• Compliance: RoHS status and MSL rating

Secondary Compatibility Factors:

• Current rating must support the application requirement (minimum 340 mA saturation current acceptable for reduced-current applications)
• Saturation current (Isat) and current rating determine thermal and magnetic performance margins
• Physical dimensions (length, width, height) must accommodate board layout constraints
• Frequency characteristics (self-resonant frequency, Q factor) affect high-frequency performance but do not preclude substitution in DC or low-frequency applications

The SDR0805-471KL from Bourns Inc. meets all primary equivalence criteria and is classified as a direct substitute for the LD2-471-R.

Parameter Comparison

Engineering Selection Recommendations

LD2-471-R Selection Criteria: The LD2-471-R is the primary choice for applications requiring the full 740 mA current rating and 550 mA saturation current specification. This part is recommended when design margins demand maximum current handling capacity and thermal performance. The Eaton LD series maintains active product status with established supply chain presence.

SDR0805-471KL Selection Criteria: The SDR0805-471KL from Bourns is suitable for applications where the 340 mA current rating and 500 mA saturation current are sufficient. This substitute is appropriate for reduced-current designs, secondary filtering stages, or applications with lower power requirements. The Bourns SDR0805 series carries ROHS3 Compliant status and REACH Unaffected designation, providing enhanced environmental compliance documentation. Higher inventory availability (6195 pcs vs. 825 pcs) may support expedited procurement timelines.

Compliance Considerations: Both parts are RoHS compliant and carry MSL 1 (Unlimited) ratings. The SDR0805-471KL provides additional REACH compliance documentation. Both parts are classified under ECCN EAR99 and HTSUS 8504.50.4000.

Physical Compatibility: The SDR0805-471KL has a slightly larger footprint (0.307" x 0.307" vs. 0.307" x 0.276") and greater seated height (0.209" vs. 0.197"). Board layout verification is required before substitution to confirm clearance and thermal management compatibility.

Frequently Asked Questions (FAQ)

Q: Can the SDR0805-471KL replace the LD2-471-R in all applications?

A: The SDR0805-471KL is electrically equivalent for inductance, DC resistance, and temperature range. However, the reduced current rating (340 mA vs. 740 mA) and saturation current (500 mA vs. 550 mA) limit substitution to applications where these lower ratings are acceptable. Physical dimensions also differ slightly, requiring board layout verification.

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

A: The LD2-471-R supports continuous current up to 740 mA, while the SDR0805-471KL is rated for 340 mA. The saturation current (Isat) indicates the current level at which the inductor begins to lose inductance due to core saturation. Applications operating above 340 mA continuous or 500 mA peak current require the LD2-471-R to maintain performance and reliability.

Q: Are there physical compatibility issues between these parts?

A: The SDR0805-471KL is 0.031 inches wider (7.80mm vs. 7.00mm) and 0.012 inches taller (5.30mm vs. 5.00mm) than the LD2-471-R. PCB layout, component spacing, and thermal clearance must be verified before substitution. The nonstandard package designation for both parts requires specific footprint confirmation.

Q: Do both parts have the same RoHS compliance level?

A: The LD2-471-R is RoHS Compliant. The SDR0805-471KL is ROHS3 Compliant, which represents a more recent compliance standard. Both parts meet RoHS requirements. The SDR0805-471KL additionally carries REACH Unaffected status.

Q: What is the MSL rating and why does it matter?

A: Both parts carry MSL 1 (Unlimited), indicating unlimited shelf life under standard storage conditions (23°C, 50% relative humidity). This rating eliminates moisture sensitivity concerns for standard component handling and storage procedures.

Q: Can I use the SDR0805-471KL in a high-current application?

A: No. The SDR0805-471KL is rated for 340 mA continuous current and 500 mA saturation current. Applications requiring the full 740 mA rating of the LD2-471-R must use the Eaton part or identify an alternative with equivalent or higher current specifications.

Q: What are the frequency characteristics of these inductors?

A: The LD2-471-R does not provide published Q factor or self-resonant frequency data. The SDR0805-471KL specifies Q of 12 at 796 kHz and self-resonant frequency of 4 MHz. For DC and low-frequency applications, these frequency characteristics do not affect substitution suitability. High-frequency applications require detailed frequency response analysis.