SD3110-1R0-R Equivalent & Substitute Parts

Part Overview

The SD3110-1R0-R is a 1 µH shielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is rated for 1.21 A continuous current with a DC resistance of 68.3mOhm and operates across the temperature range of -40°C to 125°C. The part is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and procurement continuity.

Substiute Parts

SD3110-1R0-R

Eaton - Electronics DivisionIn Stock: 1050SD3110-1R0-R Datasheet

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SD3114-1R0-R

Eaton - Electronics DivisionIn Stock: 1142SD3114-1R0-R Datasheet

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LMLP0303N1R0CTAR

KYOCERA AVXIn Stock: 750LMLP0303N1R0CTAR Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SD3110-1R0-R is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 1 µH (fixed requirement)
• Inductance tolerance: ±30% (fixed requirement)
• Core material: Ferrite (fixed requirement)
• Shielding: Shielded (fixed requirement)
• Mounting type: Surface Mount (fixed requirement)
• Operating temperature range: -40°C to 125°C (fixed requirement)
• Test frequency: 100 kHz (fixed requirement)

Secondary Compatibility Criteria:

• Current rating must equal or exceed 1.21 A
• DC resistance should be within acceptable limits for the application
• Physical dimensions must accommodate board layout constraints
• Saturation current must support circuit operating conditions

Both identified substitute parts meet the primary matching criteria. Variations in current rating, DC resistance, and physical height represent acceptable trade-offs based on application requirements and availability.

Parameter Comparison

Engineering Selection Recommendations

SD3114-1R0-R (Eaton - Electronics Division):

This substitute is manufactured by the same supplier as the main part and maintains identical inductance, tolerance, core material, shielding, and operating temperature specifications. The SD3114-1R0-R provides improved electrical performance with a current rating of 1.6 A (versus 1.21 A) and reduced DC resistance of 58 mOhm (versus 68.3 mOhm). The saturation current of 2.35 A exceeds the main part specification. The primary design consideration is the increased seated height of 1.40 mm compared to 1.00 mm for the SD3110-1R0-R, which may impact board layout in space-constrained applications. The SD3114-1R0-R holds active product status and is available in Cut Tape packaging with ROHS3 compliance.

LMLP0303N1R0CTAR (KYOCERA AVX):

This substitute maintains all primary matching criteria with identical inductance, tolerance, core material, shielding, and operating temperature range. The LMLP0303N1R0CTAR is manufactured by KYOCERA AVX and provides a current rating of 1.4 A with DC resistance of 65 mOhm, both within acceptable operational margins. The seated height of 1.00 mm matches the main part specification, providing superior board layout compatibility. Physical dimensions are 3.00mm x 3.00mm, representing a 0.10mm reduction in length and width. The saturation current of 1.3 A is lower than the main part and requires circuit-level evaluation. The LMLP0303N1R0CTAR holds active product status, is ROHS3 compliant, and is available in Tape & Reel packaging.

Selection Basis:

Choose SD3114-1R0-R when higher current capacity and lower DC resistance are required and board height constraints permit the 1.40 mm seated height. Choose LMLP0303N1R0CTAR when board height is limited to 1.00 mm and cross-manufacturer sourcing is acceptable. Both substitutes support the -40°C to 125°C operating range and maintain shielded ferrite core construction.

Frequently Asked Questions (FAQ)

Q: Can the SD3114-1R0-R replace the SD3110-1R0-R in all applications?

A: The SD3114-1R0-R meets all primary electrical specifications and maintains identical inductance, tolerance, and core material. The increased seated height of 1.40 mm versus 1.00 mm requires verification against board layout constraints. The improved current rating and reduced DC resistance represent performance enhancements suitable for most applications.

Q: What is the impact of the 0.10mm difference in footprint between the LMLP0303N1R0CTAR and the main part?

A: The LMLP0303N1R0CTAR measures 3.00mm x 3.00mm compared to 3.10mm x 3.10mm for the SD3110-1R0-R. This 0.10mm reduction in both length and width is within typical PCB design tolerances and does not affect electrical performance. Verify pad layout compatibility with your specific board design.

Q: How does the saturation current difference affect substitution suitability?

A: The SD3114-1R0-R provides 2.35 A saturation current, exceeding the main part's 1.47 A specification. The LMLP0303N1R0CTAR provides 1.3 A saturation current, which is lower than the main part. Saturation current determines the maximum current before inductance degrades. Verify that circuit operating conditions remain below the saturation current of the selected substitute.

Q: Are both substitutes RoHS compliant?

A: Both SD3114-1R0-R and LMLP0303N1R0CTAR are ROHS3 compliant. The main part SD3110-1R0-R does not specify RoHS status. If RoHS compliance is required for your application, both substitutes satisfy this requirement.

Q: What packaging options are available for these substitutes?

A: The SD3114-1R0-R is available in Cut Tape (CT) packaging. The LMLP0303N1R0CTAR is available in Tape & Reel (TR) packaging. Verify packaging compatibility with your procurement and assembly processes.

Q: Can I use the LMLP0303N1R0CTAR if the saturation current is lower than the main part?

A: The LMLP0303N1R0CTAR saturation current of 1.3 A is lower than the main part's 1.47 A. This substitute is suitable only if your circuit operating current remains below 1.3 A. Evaluate your specific current requirements before selection.

Q: Why is the SD3110-1R0-R classified as obsolete?

A: The SD3110-1R0-R is listed as obsolete, indicating that Eaton - Electronics Division has discontinued this part number. The identified substitutes provide equivalent or improved electrical performance and maintain active product status, ensuring long-term availability and supply chain continuity.