SFS66S15K375B-F Film Capacitor Equivalent & Substitute Parts

Part Overview

The SFS66S15K375B-F is a 15 µF film capacitor rated for 660V AC operation, manufactured by Cornell Dubilier Electronics (CDE) in the SF series. This component is designed for motor run applications and features polypropylene (PP) metallized dielectric construction in a radial, can-style package with quick connect/disconnect termination.

The SFS66S15K375B-F is classified as obsolete. Locating active equivalent or substitute parts is necessary to ensure continued availability for new designs, maintenance applications, and production continuity.

Substiute Parts

SFS66S15K375B-F

Cornell Dubilier Electronics (CDE)In Stock: 757SFS66S15K375B-F Datasheet

Current PartRFQ

SFS66T15K384B-F

Cornell Dubilier Electronics (CDE)In Stock: 774SFS66T15K384B-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SFS66S15K375B-F is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Capacitance value: 15 µF (exact match required)
• Tolerance: ±10% (exact match required)
• Voltage rating (AC): 660V (exact match required)
• Dielectric material: Polypropylene (PP), Metallized (exact match required)
• Operating temperature range: -40°C to 70°C (exact match required)

Mechanical Equivalence Criteria:

• Package type: 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)

Compliance Criteria:

• RoHS3 Compliant status (required for environmental compliance)

Substitute parts must match all electrical parameters, mechanical dimensions, and compliance certifications. Dimensional variations in height or diameter that exceed the specified tolerances disqualify a part from substitution.

Parameter Comparison

Engineering Selection Recommendations

SFS66T15K384B-F as Direct Substitute:

The SFS66T15K384B-F qualifies as a direct substitute for the obsolete SFS66S15K375B-F based on complete electrical parameter equivalence and mechanical compatibility. Both parts are manufactured by Cornell Dubilier Electronics within the SF series and share identical capacitance, voltage rating, tolerance, dielectric material, operating temperature range, mounting configuration, and termination style.

The SFS66T15K384B-F is currently in active production status, ensuring availability for procurement and future supply chain continuity. Both parts maintain ROHS3 compliance certification.

A minor dimensional variation exists in seated height: the substitute part measures 3.960" (100.58mm) compared to the original 3.870" (98.30mm), representing a 0.090" (2.28mm) increase. This variation must be evaluated within the context of the specific application's physical space constraints and holder/bracket design. The diameter remains identical at 2.120" (53.85mm), and lead spacing is unchanged at 0.810" (20.57mm).

For applications where the height variation is accommodated by the mechanical design, the SFS66T15K384B-F provides full functional and electrical equivalence with the added benefit of active product status and ongoing manufacturer support.

Frequently Asked Questions (FAQ)

Q: Can the SFS66T15K384B-F be used as a direct replacement for the SFS66S15K375B-F?

A: Yes. Both parts are electrically and mechanically equivalent across all critical parameters: 15 µF capacitance, ±10% tolerance, 660V AC rating, polypropylene metallized dielectric, -40°C to 70°C operating range, radial can package, quick connect/disconnect termination, and identical lead spacing. The SFS66T15K384B-F is the active equivalent.

Q: What is the significance of the height difference between these parts?

A: The SFS66T15K384B-F has a maximum seated height of 3.960" (100.58mm) versus 3.870" (98.30mm) for the SFS66S15K375B-F, a difference of 0.090" (2.28mm). This variation must be verified against the physical space available in the application's enclosure or holder/bracket assembly. If the mounting space is constrained, this dimension must be confirmed before substitution.

Q: Are both parts RoHS compliant?

A: Yes. Both the SFS66S15K375B-F and SFS66T15K384B-F are ROHS3 compliant, meeting environmental and regulatory requirements for electronic component manufacturing and use.

Q: Why is the original part listed as obsolete?

A: The SFS66S15K375B-F is classified as obsolete, indicating it is no longer in active production. The SFS66T15K384B-F, as an active equivalent from the same manufacturer and series, is the recommended source for continued supply.

Q: Are the electrical specifications identical between these parts?

A: Yes. Capacitance (15 µF), tolerance (±10%), voltage rating (660V AC), dielectric material (polypropylene metallized), and operating temperature range (-40°C to 70°C) are identical. Both parts are suitable for motor run applications.

Q: What mounting considerations apply to both parts?

A: Both parts require chassis mount installation with a holder or bracket. Lead spacing is 0.810" (20.57mm) for both. Termination is quick connect/disconnect type for both parts. Mechanical mounting design must accommodate the height dimension of the selected part.