Equivalent & Substitute Parts for Cornell Dubilier Electronics 24FD3755-F

Part Overview

The Cornell Dubilier Electronics 24FD3755-F is a 55 µF film capacitor rated for 370V AC operation, designed for motor run and power factor correction applications. This component features polypropylene metallized dielectric construction in a radial can package with quick connect termination. The part is classified as obsolete, necessitating identification of active equivalent alternatives to maintain supply chain continuity for applications requiring this specific electrical and mechanical configuration.

Substiute Parts

24FD3755-F

Cornell Dubilier Electronics (CDE)In Stock: 88124FD3755-F Datasheet

Current PartRFQ

24FD3755A-F

Cornell Dubilier Electronics (CDE)In Stock: 128524FD3755A-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 24FD3755-F is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Capacitance value: 55 µF (exact match required)
• Tolerance: ±10% (exact match required)
• Voltage rating (AC): 370V (exact match required)
• Dielectric material: Polypropylene (PP), Metallized (exact match required)

Mechanical Parameters:

• Package type: Radial, Can (exact match required)
• Mounting configuration: Chassis Mount, Requires Holder/Bracket (exact match required)
• Termination: Quick Connect, Disconnect (exact match required)
• Lead spacing: 0.813" (20.64mm) (exact match required)
• Operating temperature range: -40°C ~ 70°C (exact match required)

Compliance Parameters:

• RoHS3 Compliance (required for substitution)
• Moisture Sensitivity Level: 1 (Unlimited)

The substitute part 24FD3755A-F meets all electrical, mechanical, and compliance requirements for direct substitution. The primary distinction is product status: the main part is obsolete while the substitute is active, with increased inventory availability.

Parameter Comparison

Engineering Selection Recommendations

The 24FD3755A-F is a direct functional equivalent to the 24FD3755-F for all motor run and power factor correction applications. Selection of the substitute part is supported by the following factors:

Product Status: The substitute part maintains active production status with confirmed inventory availability (1190 pcs), whereas the main part is obsolete with limited remaining stock (871 pcs). For new designs or long-term supply requirements, the active substitute ensures continued component availability.

Compliance Certification: Both parts maintain identical RoHS3 compliance and MSL ratings, ensuring regulatory and environmental compatibility across applications.

Dimensional Compatibility: The substitute exhibits a maximum seated height of 3.160" (80.26mm) compared to 3.250" (82.55mm) for the main part. This 0.090" (2.29mm) reduction in height remains within standard mechanical tolerances for chassis-mounted applications requiring holder/bracket support and does not compromise electrical performance or mechanical fit.

Electrical Equivalence: All critical electrical parameters—capacitance, tolerance, voltage rating, and dielectric material—are identical, ensuring direct functional substitution without circuit redesign or performance degradation.

Frequently Asked Questions (FAQ)

Q: Can the 24FD3755A-F be used as a direct replacement for the 24FD3755-F in existing assemblies?

A: Yes. The substitute part is electrically and mechanically equivalent across all specified parameters. The minor height reduction (0.090") does not affect mounting compatibility for chassis-mount applications with holder/bracket support.

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

A: The active status of the 24FD3755A-F indicates ongoing manufacturing and supply chain support. This ensures long-term component availability for production, maintenance, and field replacement applications without supply interruption risk.

Q: Are there any compliance differences between the two parts?

A: No. Both parts maintain identical RoHS3 compliance, MSL rating of 1 (Unlimited), and equivalent regulatory certifications (ECCN: EAR99; HTSUS: 8532.25.0020).

Q: Does the height difference affect circuit board layout or mechanical design?

A: The substitute part is 0.090" shorter in maximum seated height. For chassis-mount applications requiring holder/bracket support, this dimension reduction does not create compatibility issues. Verify clearance in applications with height-constrained mounting spaces.

Q: What applications are supported by this substitute?

A: Both parts are rated for motor run and power factor correction (PFC) applications requiring 55 µF capacitance at 370V AC with polypropylene metallized dielectric construction.

Q: Is the lead spacing identical between both parts?

A: Yes. Both parts maintain 0.813" (20.64mm) lead spacing, ensuring identical electrical connection geometry and mounting hole alignment.