SD52-3R5-R Equivalent & Substitute Parts

Part Overview

The SD52-3R5-R is a 3.5 µH shielded drum core wirewound inductor manufactured by Eaton - Electronics Division. This surface mount component is designed for applications requiring fixed inductance with moderate current handling capability. The part is currently in active production status with substantial inventory availability (63,400 pieces in stock). Substitute parts are identified when equivalent electrical and mechanical parameters are required for design flexibility, supply chain continuity, or inventory optimization.

Substiute Parts

SD52-3R5-R

Eaton - Electronics DivisionIn Stock: 63438SD52-3R5-R Datasheet

Current PartRFQ

SRU5018-3R5Y

Bourns Inc.In Stock: 1951SRU5018-3R5Y Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SD52-3R5-R is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 3.5 µH (exact match required)
• Core type: Ferrite drum core, wirewound
• Shielding: Shielded construction
• Mounting: Surface mount
• Package footprint: 5.20mm x 5.20mm x 2.00mm maximum height
• Operating temperature range: -40°C to 125°C minimum

Secondary Compatibility Factors:

• Current rating: Substitute must equal or exceed 1.73 A
• DC resistance: Lower DCR values are acceptable for improved performance
• Saturation current: Substitute must support the application's peak current requirements
• Tolerance: Inductance tolerance variations are acceptable within component specifications

The SRU5018-3R5Y from Bourns Inc. qualifies as a substitute based on matching inductance, core material, shielding, mounting type, package dimensions, and operating temperature range. The substitute demonstrates improved electrical characteristics with higher current rating (2.1 A versus 1.73 A) and lower DC resistance (32 mOhm versus 50.3 mOhm).

Parameter Comparison

Engineering Selection Recommendations

SD52-3R5-R Selection Criteria:

• Primary choice when Eaton component availability and supply chain continuity are prioritized
• Suitable for applications with current requirements up to 1.73 A
• Acceptable for designs where 50.3 mOhm DC resistance meets thermal and efficiency specifications
• Recommended when existing inventory or long-term supplier relationships with Eaton are established

SRU5018-3R5Y Selection Criteria:

• Suitable alternative when improved electrical performance is required
• Recommended for applications demanding current ratings up to 2.1 A
• Preferred when lower DC resistance (32 mOhm) reduces power dissipation and improves thermal performance
• Acceptable for designs requiring ROHS3 compliance certification
• Viable option for supply chain diversification or when Bourns inventory is more readily available

Both parts maintain active production status and full regulatory compliance. Selection between these components should be based on application-specific current requirements, thermal management considerations, and supply chain availability.

Frequently Asked Questions (FAQ)

Q: Can the SRU5018-3R5Y directly replace the SD52-3R5-R in existing designs?

A: Yes, the SRU5018-3R5Y is mechanically and electrically compatible for direct substitution. Both components share identical inductance values (3.5 µH), package dimensions (5.20mm x 5.20mm x 2.00mm), mounting type (surface mount), and operating temperature range (-40°C to 125°C). The substitute offers improved current handling (2.1 A versus 1.73 A) and lower DC resistance (32 mOhm versus 50.3 mOhm), making it suitable for the same circuit applications.

Q: What are the key differences between these two inductors?

A: The primary differences are current rating, DC resistance, and inductance tolerance. The SRU5018-3R5Y provides higher current capacity (2.1 A versus 1.73 A) and lower resistance (32 mOhm versus 50.3 mOhm), resulting in reduced power dissipation. The SD52-3R5-R has tighter inductance tolerance (±20% versus ±30%), which may be advantageous for precision-critical applications. Both components use ferrite drum core construction with shielding and operate across the same temperature range.

Q: Are there any package or footprint compatibility concerns?

A: No compatibility concerns exist. Both the SD52-3R5-R and SRU5018-3R5Y share identical package dimensions of 5.20mm x 5.20mm with a maximum seated height of 2.00mm. They are both surface mount components suitable for standard PCB assembly processes without modification to existing layouts or footprints.

Q: Which component should be selected for thermal-sensitive applications?

A: The SRU5018-3R5Y is preferable for thermal-sensitive applications due to its significantly lower DC resistance (32 mOhm versus 50.3 mOhm). Lower resistance reduces resistive heating and power dissipation, which is beneficial in high-frequency switching circuits or applications with continuous current flow.

Q: Are both components RoHS compliant?

A: Yes, both components are RoHS compliant. The SD52-3R5-R carries RoHS Compliant certification, while the SRU5018-3R5Y carries ROHS3 Compliant certification. Both meet environmental and regulatory requirements for electronic component manufacturing and use.

Q: What is the moisture sensitivity level for these inductors?

A: Both components have a Moisture Sensitivity Level (MSL) of 1, which indicates unlimited shelf life without moisture control requirements. No special storage or handling precautions are necessary for either component.