24FD3765-F Film Capacitor 65µF 370VAC Equivalent & Substitute Parts

Part Overview

The 24FD3765-F is a 65 µF film capacitor rated for 370V AC applications, manufactured by Cornell Dubilier Electronics (CDE) in the MPF series. This component is designed for motor run and power factor correction (PFC) applications using polypropylene (PP) metallized dielectric technology with radial can packaging. The main part number 24FD3765-F has reached obsolete status, making identification of suitable substitute parts essential for system replacement and maintenance.

Substiute Parts

24FD3765-F

Cornell Dubilier Electronics (CDE)In Stock: 71424FD3765-F Datasheet

Current PartRFQ

24FD3765A-F

Cornell Dubilier Electronics (CDE)In Stock: 84724FD3765A-F Datasheet

DirectRFQ

SFT37T65K291B-F

Cornell Dubilier Electronics (CDE)In Stock: 1033SFT37T65K291B-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 24FD3765-F must maintain the following critical parameters for direct interchangeability:

• Capacitance Value: 65 µF (exact match required)
• Voltage Rating: 370V AC minimum
• Dielectric Type: Polypropylene (PP) metallized
• Package Type: Radial can configuration
• Mounting Interface: Chassis mount with quick connect/disconnect termination
• Temperature Rating: -40°C ~ 70°C operating range
• Tolerance: ±10%
• RoHS Compliance: ROHS3 Compliant

The substitution logic is based on electrical compatibility (capacitance, voltage, and dielectric properties), mechanical compatibility (package type and mounting), and environmental compliance (temperature range and RoHS status). Physical dimensions may vary within acceptable tolerances provided that mounting interface and lead spacing remain compatible with existing fixture designs.

Parameter Comparison

Engineering Selection Recommendations

24FD3765A-F (Primary Substitute) The 24FD3765A-F is the recommended first-choice substitute for the obsolete 24FD3765-F. Both components belong to the same CDE MPF series and maintain identical electrical specifications. The 24FD3765A-F is in active production status, ensuring long-term availability and supply chain reliability. All critical parameters—capacitance, voltage rating, dielectric composition, and temperature range—match the original specification. The component is ROHS3 compliant and carries identical REACH and ECCN classifications. Height dimension increases from 4.000" to 4.160", which may require mechanical evaluation in confined mounting spaces.

SFT37T65K291B-F (Alternative Substitute) The SFT37T65K291B-F is a secondary substitute option from the CDE SF series. All electrical parameters—capacitance, voltage rating, dielectric type, and operating temperature—are identical to the original part. This component is in active production with established inventory availability. The dielectric properties and RoHS3 compliance ensure functional equivalence. Mechanical differences include a reduced height of 3.030" (compared to 4.000" for the original), which offers advantages in space-constrained applications. Lead spacing tolerance of 0.810" requires confirmation of compatibility with existing quick connect/disconnect fixtures designed for 0.813" spacing.

Both substitute parts satisfy the electrical and environmental requirements for motor run and power factor correction applications. Selection between the two should be based on mechanical fit verification within the specific application mounting geometry.

Frequently Asked Questions (FAQ)

Q: Can the 24FD3765A-F directly replace the obsolete 24FD3765-F without circuit modifications? A: Yes, the 24FD3765A-F maintains identical electrical specifications (65 µF, 370V AC, ±10% tolerance, polypropylene dielectric, -40°C to 70°C operating range). Direct electrical substitution is valid. Mechanical mounting must be verified to confirm the increased height dimension (4.160" vs. 4.000") is accommodated by existing fixture designs.

Q: What are the key differences between the two substitute options? A: The primary difference is physical height. The 24FD3765A-F maintains height closer to the original (4.160" vs. 4.000"), while the SFT37T65K291B-F offers a significantly reduced height of 3.030". Both maintain identical electrical performance and 370V AC rating. The SFT37T65K291B-F lead spacing is 0.810" compared to 0.813" for both the original and 24FD3765A-F; this minimal 0.003" (0.08mm) difference requires verification of quick connect terminal compatibility.

Q: Are both substitutes RoHS compliant? A: Yes, both 24FD3765A-F and SFT37T65K291B-F are ROHS3 compliant, matching the compliance status of the original 24FD3765-F. Both carry identical EAR99 ECCN classification and 8532.25.0020 HTSUS codes.

Q: Which substitute should be selected for a new motor run application? A: The 24FD3765A-F is the recommended choice for direct replacement scenarios due to its identical mechanical envelope (66.68mm diameter, closer height match) and same series classification. The SFT37T65K291B-F is suitable for applications where reduced height provides mechanical advantages, provided lead spacing compatibility is confirmed.

Q: Are there temperature rating differences between the substitutes? A: No, all three parts—24FD3765-F, 24FD3765A-F, and SFT37T65K291B-F—share identical operating temperature specifications of -40°C to 70°C, ensuring thermal performance compatibility across all intended environments.

Q: Can these capacitors be used in power factor correction (PFC) circuits? A: Yes, all three parts are rated for power factor correction applications. The polypropylene metallized dielectric construction and 370V AC rating are suitable for PFC circuit topologies requiring 65 µF capacitance at 370V.