SFS52S16L288K-F Equivalent & Substitute Parts

Part Overview

The SFS52S16L288K-F is a 16 µF film capacitor rated for 525V AC operation, manufactured by Cornell Dubilier Electronics (CDE) from the SF series. This polypropylene metallized radial capacitor is designed for chassis mount applications requiring quick connect/disconnect termination. The part is currently listed as obsolete, necessitating identification of active equivalent components that maintain functional compatibility for ongoing system support and replacement requirements.

Substiute Parts

SFS52S16L288K-F

Cornell Dubilier Electronics (CDE)In Stock: 1132SFS52S16L288K-F Datasheet

Current PartRFQ

SFS52T16L291K-F

Cornell Dubilier Electronics (CDE)In Stock: 1135SFS52T16L291K-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete SFS52S16L288K-F is based on strict parameter matching within the CDE SF series film capacitor family. The substitute part SFS52T16L291K-F maintains electrical and mechanical compatibility through the following criteria:

Critical Matching Parameters:

• Capacitance value: 16 µF (identical)
• Tolerance: ±3% (identical)
• Dielectric material: Polypropylene (PP), Metallized (identical)
• Mounting type: Chassis Mount, Requires Holder/Bracket (identical)
• Package type: Radial, Can (identical)
• Termination: Quick Connect, Disconnect (identical)
• Lead spacing: 0.810" (20.57mm) (identical)
• Physical dimensions: 2.120" Dia (53.85mm) (identical)

Allowable Parameter Variations:

• Voltage Rating - AC: 525V (main) to 520V (substitute) — within acceptable tolerance for AC film capacitor applications
• Operating Temperature Range: -40°C ~ 90°C (main) to -40°C ~ 70°C (substitute) — substitute operates within reduced upper temperature limit
• Product Status: Obsolete (main) to Active (substitute) — substitute is currently manufactured

Parameter Comparison

Engineering Selection Recommendations

The SFS52T16L291K-F is a direct functional equivalent for the obsolete SFS52S16L288K-F based on the following engineering criteria:

Electrical Compatibility: Both components share identical capacitance (16 µF), tolerance (±3%), and dielectric composition (polypropylene metallized). The AC voltage rating difference of 5V (525V to 520V) is within acceptable margins for film capacitor substitution in general purpose applications. The substitute part maintains full compliance with ROHS3 standards.

Mechanical Compatibility: Physical dimensions are identical in diameter (2.120" / 53.85mm) and lead spacing (0.810" / 20.57mm). The height variation of 0.030" (76.96mm vs. 76.20mm) is negligible for chassis mount applications using holder/bracket assemblies. Both components utilize identical quick connect/disconnect termination.

Operational Considerations: The substitute part operates within a reduced temperature range (-40°C to 70°C versus -40°C to 90°C). Applications requiring sustained operation above 70°C must be evaluated against actual system thermal profiles. For applications operating within the -40°C to 70°C envelope, the SFS52T16L291K-F provides equivalent performance.

Availability: The SFS52T16L291K-F is active production status with documented inventory availability, ensuring supply chain continuity for replacement and new system builds.

Frequently Asked Questions (FAQ)

Q: Can the SFS52T16L291K-F directly replace the SFS52S16L288K-F in existing assemblies?

A: Yes, for applications operating within -40°C to 70°C and 520V AC maximum. The identical lead spacing (0.810"), diameter (2.120"), termination type (quick connect/disconnect), and capacitance (16 µF) enable direct substitution in chassis mount holder/bracket configurations. The 0.030" height difference does not affect mechanical fit.

Q: What is the significance of the 5V voltage rating reduction from 525V to 520V?

A: Film capacitors operate safely at voltages below their rated maximum. The 520V rating of the substitute part accommodates standard AC line voltages (typically 480V, 440V, or lower) with appropriate safety margin. Applications requiring operation at sustained voltages above 520V must use the original 525V rated component or higher-rated alternatives.

Q: How does the operating temperature range difference affect substitution?

A: The substitute part's maximum operating temperature of 70°C (versus 90°C for the original) is suitable for general purpose applications in standard industrial environments. Systems with thermal profiles exceeding 70°C continuous operation require thermal analysis to confirm compatibility. The lower temperature limit (-40°C) is identical for both parts.

Q: Are there any compliance or certification differences between these parts?

A: Both components are ROHS3 compliant and REACH unaffected. The substitute part carries HTSUS code 8532.25.0020 and ECCN EAR99 classification, indicating current production status and standard export compliance.

Q: What mounting considerations apply to both parts?

A: Both the SFS52S16L288K-F and SFS52T16L291K-F require chassis mount holder/bracket assemblies. The identical lead spacing and diameter ensure compatibility with existing mechanical mounting infrastructure. Quick connect/disconnect termination is standard for both components.