SFP28S35L288K-F Equivalent & Substitute Parts

Part Overview

The SFP28S35L288K-F is a 35 µF film capacitor rated for 280V AC operation, manufactured by Cornell Dubilier Electronics (CDE) from the SF series. This component features a polypropylene metallized dielectric in a radial can configuration with quick connect/disconnect termination, designed for general-purpose applications requiring high-temperature operation.

The SFP28S35L288K-F is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this component.

Substiute Parts

SFP28S35L288K-F

Cornell Dubilier Electronics (CDE)In Stock: 968SFP28S35L288K-F Datasheet

Current PartRFQ

SFP28T35L284K-F

Cornell Dubilier Electronics (CDE)In Stock: 893SFP28T35L284K-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SFP28S35L288K-F are identified based on strict electrical and mechanical parameter matching within the allowed specifications for this film capacitor category. The substitution logic is based on the following critical parameters:

Electrical Parameters:

• Capacitance value: 35 µF (exact match required)
• Tolerance: ±3% (exact match required)
• Voltage Rating (AC): 280V (exact match required)
• Dielectric Material: Polypropylene (PP), Metallized (exact match required)

Mechanical Parameters:

• Package / Case: Radial, Can (exact match required)
• Mounting Type: Chassis Mount, Requires Holder/Bracket (exact match required)
• Termination: Quick Connect, Disconnect (exact match required)
• Lead Spacing: 0.810" (20.57mm) (exact match required)
• Diameter: 1.870" (47.50mm) (exact match required)

Compliance Parameters:

• RoHS Status: ROHS3 Compliant (exact match required)

Variations in operating temperature range and height (within mechanical tolerance) are permissible provided all other parameters remain identical. Product status (active versus obsolete) does not disqualify a part from substitution eligibility when all electrical and mechanical parameters align.

Parameter Comparison

Engineering Selection Recommendations

The SFP28T35L284K-F is a direct substitute for the SFP28S35L288K-F based on matching electrical specifications, mechanical dimensions, and regulatory compliance. Both components are manufactured by Cornell Dubilier Electronics within the SF series and satisfy identical functional requirements for 35 µF, 280V AC film capacitor applications.

Product Status Consideration: The SFP28T35L284K-F carries an active product status, whereas the SFP28S35L288K-F is classified as obsolete. Selection of the active part ensures continued availability and supply chain support for future procurement requirements.

Operating Temperature Variation: The SFP28T35L284K-F operates across a reduced temperature range (-40°C ~ 70°C) compared to the main part (-40°C ~ 90°C). This variation is acceptable for applications where the operating environment does not exceed 70°C. For systems requiring sustained operation above 70°C, the temperature specification must be evaluated against actual application thermal conditions.

Mechanical Dimension Variation: The seated height of the SFP28T35L284K-F is 2.960" (75.18mm), compared to 3.000" (76.20mm) for the main part. This 0.040" (1.02mm) reduction in height remains within standard mechanical tolerances and does not affect mounting compatibility or electrical performance.

Compliance Status: Both parts maintain ROHS3 compliance and are unaffected by REACH regulations, ensuring regulatory alignment for current and future applications.

Frequently Asked Questions (FAQ)

Q: Can the SFP28T35L284K-F be used as a direct replacement for the SFP28S35L288K-F?

A: Yes. The SFP28T35L284K-F meets all critical electrical and mechanical specifications required for substitution. Capacitance, tolerance, voltage rating, dielectric material, package type, termination style, and lead spacing are identical. Both components are ROHS3 compliant and manufactured by the same supplier.

Q: What is the significance of the operating temperature range difference?

A: The SFP28S35L288K-F operates from -40°C to 90°C, while the SFP28T35L284K-F operates from -40°C to 70°C. The substitute part has a narrower upper temperature limit. Selection depends on the actual thermal environment of the application. If the system operates consistently below 70°C, the substitute part is suitable. Applications requiring sustained operation above 70°C must retain the original part specification or identify an alternative with matching high-temperature capability.

Q: Does the height difference affect mounting compatibility?

A: No. The height variation of 0.040" (1.02mm) between the two parts is within standard mechanical tolerances for radial can capacitors. Both components maintain the same diameter (1.870"), lead spacing (0.810"), and mounting type (chassis mount with holder/bracket). Existing mounting hardware and bracket designs accommodate both parts without modification.

Q: Why is the SFP28S35L288K-F listed as obsolete?

A: Product obsolescence reflects manufacturing discontinuation by Cornell Dubilier Electronics. The SFP28T35L284K-F, classified as active, represents the current production equivalent within the SF series. Substitution ensures access to in-stock inventory and ongoing supplier support.

Q: Are there any electrical performance differences between these parts?

A: No. Both parts share identical electrical specifications: 35 µF capacitance, ±3% tolerance, 280V AC rating, and polypropylene metallized dielectric. Electrical behavior, frequency response, and performance characteristics are equivalent.

Q: What compliance certifications apply to both parts?

A: Both the SFP28S35L288K-F and SFP28T35L284K-F are ROHS3 compliant and REACH unaffected. They are classified under ECCN EAR99 and HTSUS 8532.25.0010 for regulatory and trade purposes.