SFS28S55L375K-F Film Capacitor Equivalent & Substitute Parts

Part Overview

The SFS28S55L375K-F is a 55 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE) rated for 280V AC operation. This component is classified as obsolete, which necessitates identification of equivalent substitute parts for ongoing maintenance, repair, and production applications. The capacitor features polypropylene metallized dielectric construction in a radial can package with quick connect termination, suitable for general-purpose AC filtering and energy storage applications in industrial equipment.

Substiute Parts

SFS28S55L375K-F

Cornell Dubilier Electronics (CDE)In Stock: 922SFS28S55L375K-F Datasheet

Current PartRFQ

SFS28T55L384K-F

Cornell Dubilier Electronics (CDE)In Stock: 660SFS28T55L384K-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SFS28S55L375K-F are identified based on strict electrical and mechanical parameter matching within the Cornell Dubilier Electronics SF series. The substitution criteria are:

Critical Matching Parameters:

• Capacitance value: 55 µF (exact match required)
• Voltage rating: 280V AC (minimum requirement)
• Tolerance: ±3% (electrical performance equivalence)
• Dielectric material: Polypropylene (PP), Metallized (functional equivalence)
• Package type: Radial, Can (mechanical fit)
• Termination: Quick Connect, Disconnect (interface compatibility)
• Lead spacing: 0.810" (20.57mm) (PCB/mounting compatibility)
• Diameter: 2.120" (53.85mm) (envelope constraint)

Substitute parts must maintain compatibility with existing mounting hardware and electrical circuit requirements. Physical dimensions and termination style are non-negotiable for direct replacement without mechanical redesign.

Parameter Comparison

Engineering Selection Recommendations

The SFS28T55L384K-F serves as a direct electrical and mechanical substitute for the obsolete SFS28S55L375K-F. Both components are manufactured by Cornell Dubilier Electronics within the SF series and share identical electrical specifications: 55 µF capacitance, 280V AC rating, ±3% tolerance, and polypropylene metallized dielectric construction.

Compatibility Assessment:

The substitute part maintains full compatibility with existing circuit designs and mounting hardware. Mechanical dimensions are equivalent with the exception of seated height, which increases by 0.090" (2.28mm). This minor height differential must be evaluated against available mounting space in the equipment enclosure.

The operating temperature range of the substitute part is reduced from -40°C ~ 90°C to -40°C ~ 70°C. Applications operating continuously above 70°C require thermal analysis to confirm the substitute part remains within acceptable operating conditions.

Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory equivalence for industrial and commercial applications.

The substitute part is currently in active production status, providing supply chain continuity and long-term availability compared to the obsolete main part.

Frequently Asked Questions (FAQ)

Q: Can the SFS28T55L384K-F replace the SFS28S55L375K-F in all applications?

A: The SFS28T55L384K-F is electrically and mechanically equivalent for applications operating within the temperature range of -40°C to 70°C. Applications requiring operation above 70°C must be evaluated individually. The seated height difference of 0.090" must be confirmed against available mounting space.

Q: What is the significance of the product status change from Obsolete to Active?

A: The substitute part is in active production, ensuring continued availability and supply chain reliability. The obsolete status of the original part indicates it is no longer manufactured and existing inventory is limited.

Q: Are the electrical specifications identical between the two parts?

A: Yes. Both parts share identical capacitance (55 µF), voltage rating (280V AC), tolerance (±3%), and dielectric material (polypropylene metallized). Electrical performance in circuit applications is equivalent.

Q: What is the impact of the 0.090" height difference?

A: The substitute part has a maximum seated height of 3.960" compared to 3.870" for the original part. This difference must be verified against available vertical space in the equipment enclosure and mounting bracket design.

Q: Are both parts compliant with current regulatory standards?

A: Yes. Both the SFS28S55L375K-F and SFS28T55L384K-F are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for industrial component applications.

Q: What is the lead spacing and is it the same for both parts?

A: Both parts feature 0.810" (20.57mm) lead spacing, ensuring compatibility with existing PCB layouts and mounting hardware without modification.

Q: Can the substitute part be used in high-temperature applications?

A: The substitute part is rated for continuous operation up to 70°C. Applications requiring operation above this temperature should use the original part if available or conduct thermal analysis to confirm the substitute part remains within acceptable limits for the specific application.