SD53-680-R Equivalent & Substitute Parts

Part Overview

The SD53-680-R is a 68 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 actively produced and RoHS compliant, making it suitable for modern electronic assemblies. Equivalent and substitute parts may be required due to inventory constraints, supply chain considerations, or specific application performance requirements within acceptable parameter ranges.

Substiute Parts

SD53-680-R

Eaton - Electronics DivisionIn Stock: 5532SD53-680-R Datasheet

Current PartRFQ

SRU5028-680Y

Bourns Inc.In Stock: 5725SRU5028-680Y Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SD53-680-R are identified based on strict electrical and mechanical compatibility criteria. The following parameters must align for valid substitution:

Critical Matching Parameters:

• Inductance value of 68 µH
• Shielded drum core wirewound construction
• Ferrite core material
• Surface mount package type
• Physical dimensions of 5.20 x 5.20 x 3.00 mm
• Operating temperature range of -40°C to 125°C

Acceptable Parameter Variations:

• Current rating must be equal to or greater than 520 mA
• DC resistance must not exceed 525 mOhm
• Saturation current must support the application's peak current requirements
• Inductance tolerance may vary within standard ranges
• RoHS compliance status must be maintained

The SRU5028-680Y from Bourns Inc. meets these substitution criteria and is classified as an equivalent part for the SD53-680-R.

Parameter Comparison

Engineering Selection Recommendations

SD53-680-R (Eaton - Electronics Division):

• Primary choice when Eaton supply chain is preferred
• Offers ±20% inductance tolerance for tighter specifications
• Higher saturation current (580 mA) provides greater operating margin above rated current
• RoHS compliant for standard regulatory requirements
• Actively produced with established supply availability

SRU5028-680Y (Bourns Inc.):

• Valid substitute when Bourns supply chain is available
• Provides higher continuous current rating (560 mA vs 520 mA)
• Lower DC resistance (450 mOhm) reduces power dissipation
• ROHS3 compliant, meeting the latest regulatory standard
• Actively produced with established supply availability
• Wider inductance tolerance (±30%) acceptable for less critical applications

Both parts are actively manufactured and maintain full regulatory compliance. Selection between these parts should be based on supply availability, cost considerations, and specific application requirements regarding saturation margin and DC resistance performance.

Frequently Asked Questions (FAQ)

Q: Can the SRU5028-680Y directly replace the SD53-680-R in my circuit?

A: Yes, the SRU5028-680Y is a direct substitute for the SD53-680-R. Both parts share identical inductance values, package dimensions, shielding characteristics, and operating temperature ranges. The Bourns part offers improved current rating and lower DC resistance, making it functionally compatible for the same applications.

Q: What is the difference in DC resistance between these parts?

A: The SD53-680-R has a maximum DC resistance of 525 mOhm, while the SRU5028-680Y has a DC resistance of 450 mOhm. The lower resistance of the Bourns part results in reduced power dissipation and heat generation during operation, which may be beneficial in thermally constrained designs.

Q: Why does the SRU5028-680Y have a lower saturation current than the SD53-680-R?

A: The saturation current specifications reflect the magnetic design of each inductor. The SD53-680-R has a saturation current of 580 mA, while the SRU5028-680Y has 460 mA. Despite this difference, the SRU5028-680Y maintains a higher continuous current rating (560 mA vs 520 mA), indicating different design optimization approaches between manufacturers.

Q: Are both parts available in the same packaging format?

A: Yes, both the SD53-680-R and SRU5028-680Y are supplied in Tape & Reel (TR) packaging, which is standard for surface mount component assembly. The physical package dimensions are identical at 5.20 x 5.20 x 3.00 mm, ensuring compatibility with existing PCB designs and pick-and-place equipment.

Q: What is the difference between RoHS and ROHS3 compliance?

A: Both parts meet RoHS compliance requirements. The SD53-680-R is RoHS compliant, while the SRU5028-680Y is ROHS3 compliant. ROHS3 represents the latest version of the RoHS directive with updated substance restrictions. Both certifications are acceptable for modern electronic assemblies.

Q: Which part should I choose if inductance tolerance is critical to my application?

A: The SD53-680-R offers a tighter inductance tolerance of ±20%, compared to the SRU5028-680Y at ±30%. If your circuit requires strict inductance specifications, the Eaton part is the preferred choice. For applications with less stringent tolerance requirements, either part is acceptable.

Q: Can these parts be used interchangeably in high-current applications?

A: The SRU5028-680Y is rated for higher continuous current (560 mA) compared to the SD53-680-R (520 mA), making it the better choice for applications operating near maximum current limits. However, the SD53-680-R has a higher saturation current (580 mA), which may be relevant for transient current conditions.