LD1-560-R Equivalent & Substitute Parts Reference

Part Overview

The LD1-560-R is a 56 µH unshielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 500 mA continuous current with a maximum DC resistance of 937 mOhm and operates across the temperature range of -40°C to 125°C. The part is currently active in production and RoHS compliant, making it suitable for modern electronic applications requiring fixed inductance in compact form factors.

Substitute parts are identified when equivalent electrical performance can be achieved within the specified parameter tolerances while maintaining mechanical compatibility and compliance certifications. The LD1-560-R has one qualified substitute in the Bourns SDR0403 series.

Substiute Parts

LD1-560-R

Eaton - Electronics DivisionIn Stock: 1091LD1-560-R Datasheet

Current PartRFQ

SDR0403-560KL

Bourns Inc.In Stock: 14822SDR0403-560KL Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LD1-560-R is determined by strict adherence to the following electrical and mechanical criteria:

Electrical Compatibility Requirements:

• Inductance value must be 56 µH (exact match)
• Current rating must be 500 mA or greater
• DC resistance must not exceed 937 mOhm
• Saturation current must be 570 mA or greater
• Operating temperature range must encompass -40°C to 125°C

Mechanical Compatibility Requirements:

• Package dimensions must be 0.177" L × 0.157" W (4.50mm × 4.00mm)
• Height seated maximum must not exceed 0.126" (3.20mm) for direct mechanical fit
• Mounting type must be surface mount
• Core type must be drum core, wirewound, ferrite material

Compliance Requirements:

• RoHS compliance status must be maintained at RoHS Compliant or higher
• Moisture sensitivity level must be 1 (Unlimited) or equivalent

The SDR0403-560KL from Bourns Inc. meets all substitution criteria and is classified as a direct equivalent.

Parameter Comparison

Engineering Selection Recommendations

LD1-560-R (Eaton - Electronics Division):

• Primary choice for original design specifications
• Active product status with 1047 pieces in stock
• RoHS Compliant certification
• Established supply chain through Eaton

SDR0403-560KL (Bourns Inc.):

• Qualified direct substitute with superior saturation current margin (740 mA vs. 570 mA)
• Tighter inductance tolerance (±10% vs. ±20%) provides improved circuit performance consistency
• ROHS3 Compliant status exceeds baseline RoHS requirement
• Higher inventory availability (14722 pieces in stock)
• Height dimension 0.012" greater; mechanical clearance must be confirmed in target application
• Suitable for new designs or production transitions requiring enhanced performance margins

Both parts maintain identical electrical performance for the 56 µH, 500 mA specification and are compatible with surface mount assembly processes. Selection between these parts depends on design margin requirements, inventory availability, and mechanical clearance constraints in the specific application.

Frequently Asked Questions (FAQ)

Q: Can the SDR0403-560KL replace the LD1-560-R in an existing design?

A: The SDR0403-560KL is electrically compatible as a direct substitute. The primary consideration is the height dimension: the Bourns part is 0.012" (0.30mm) taller when seated. Verify that the additional height does not create clearance conflicts with adjacent components or board features before implementation.

Q: What is the significance of the inductance tolerance difference between these parts?

A: The LD1-560-R has ±20% tolerance while the SDR0403-560KL has ±10% tolerance. The tighter tolerance of the Bourns part results in more consistent inductance values across production batches, which can improve circuit performance predictability and reduce tuning requirements in applications sensitive to inductance variation.

Q: Are both parts suitable for the same operating temperature range?

A: Yes. Both the LD1-560-R and SDR0403-560KL operate across -40°C to 125°C, providing identical thermal performance specifications.

Q: What does the saturation current difference mean for circuit design?

A: The LD1-560-R has a saturation current (Isat) of 570 mA, while the SDR0403-560KL has 740 mA. Both parts are rated for 500 mA continuous current. The higher saturation current in the Bourns part provides greater margin before inductance degradation occurs, offering improved performance headroom in transient current conditions.

Q: Is there a compliance difference between these parts?

A: The LD1-560-R is RoHS Compliant, while the SDR0403-560KL is ROHS3 Compliant. ROHS3 represents a higher compliance standard. Both parts meet RoHS requirements; the Bourns part exceeds the baseline specification.

Q: Can these parts be used interchangeably in production?

A: Electrical interchangeability is confirmed. Mechanical interchangeability requires verification of the 0.012" height difference in the specific PCB layout. Once clearance is confirmed, parts can be used interchangeably from a functional standpoint.

Q: What is the DC resistance difference and does it matter?

A: The LD1-560-R has 937 mOhm maximum DCR while the SDR0403-560KL has 940 mOhm maximum DCR. The 3 mOhm difference is negligible for most applications and falls within normal manufacturing variation for this component class.