Equivalent & Substitute Parts for Cornell Dubilier Electronics 23FD3755

Part Overview

The Cornell Dubilier Electronics 23FD3755 is a 55 µF film capacitor rated for 370V AC operation, utilizing polypropylene (PP) metallized dielectric technology in a radial, can-style package. This component is designed for motor run and power factor correction (PFC) applications requiring chassis mount installation with holder/bracket support.

The 23FD3755 carries an obsolete product status. Identifying equivalent substitute parts is necessary to maintain system functionality, ensure continued availability for repair and maintenance operations, and support long-term supply chain planning for legacy equipment utilizing this capacitor specification.

Substiute Parts

23FD3755

Cornell Dubilier Electronics (CDE)In Stock: 79023FD3755 Datasheet

Current PartRFQ

SFS37T55K384B-F

Cornell Dubilier Electronics (CDE)In Stock: 931SFS37T55K384B-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 23FD3755 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)
• Operating temperature range: -40°C to 70°C (exact match required)

Application Compatibility:

• Motor Run applications
• Power Factor Correction (PFC) applications

Substitute parts must satisfy all electrical and mechanical parameters listed above. Dimensional variations within manufacturing tolerances (lead spacing, case diameter, height) are permissible provided the part maintains mechanical and electrical compatibility with the original installation.

Parameter Comparison

Engineering Selection Recommendations

The SFS37T55K384B-F is a direct electrical and mechanical equivalent to the 23FD3755. Both parts are manufactured by Cornell Dubilier Electronics and satisfy identical specifications across capacitance, voltage rating, dielectric material, package configuration, and operating temperature range.

Product Status Consideration: The 23FD3755 carries obsolete status, while the SFS37T55K384B-F is active in production. Selection of the SFS37T55K384B-F ensures continued availability and supply chain reliability for applications requiring 55 µF, 370V AC film capacitors in motor run and power factor correction circuits.

Compliance Advantage: The SFS37T55K384B-F achieves ROHS3 compliance, whereas the 23FD3755 is RoHS non-compliant. For new designs or systems subject to regulatory compliance requirements, the SFS37T55K384B-F provides enhanced environmental and regulatory alignment.

Dimensional Compatibility: Measured dimensional variations between the two parts (lead spacing, case diameter, height) fall within standard manufacturing tolerances and do not affect mechanical fit or electrical performance in chassis mount applications utilizing holder/bracket support.

Frequently Asked Questions (FAQ)

Q: Can the SFS37T55K384B-F be used as a direct replacement for the 23FD3755 in existing equipment?

A: Yes. The SFS37T55K384B-F meets all electrical and mechanical specifications of the 23FD3755. Dimensional variations are within manufacturing tolerances and do not affect installation in holder/bracket assemblies. Both parts are identical in capacitance (55 µF), voltage rating (370V AC), dielectric material (polypropylene metallized), package type (radial can), and operating temperature range (-40°C to 70°C).

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is determined by exact equivalence in: capacitance value (55 µF), tolerance (±10%), AC voltage rating (370V), dielectric material (polypropylene metallized), package type (radial can), mounting configuration (chassis mount with holder/bracket), termination style (quick connect/disconnect), and operating temperature range (-40°C to 70°C). All substitute parts must match these parameters precisely.

Q: Are there dimensional differences between these parts?

A: Minor dimensional variations exist within manufacturing tolerances. The SFS37T55K384B-F has a case diameter of 2.120" (53.85mm) versus 2.125" (53.98mm) for the 23FD3755, lead spacing of 0.810" (20.57mm) versus 0.813" (20.64mm), and seated height of 3.960" (100.58mm) versus 4.000" (101.60mm). These variations do not affect mechanical fit or electrical performance in standard chassis mount applications.

Q: What is the advantage of selecting the SFS37T55K384B-F over the 23FD3755?

A: The SFS37T55K384B-F is an active production part with confirmed ongoing availability, whereas the 23FD3755 is obsolete. Additionally, the SFS37T55K384B-F achieves ROHS3 compliance, supporting regulatory requirements for new installations and system upgrades.

Q: Are both parts suitable for motor run and power factor correction applications?

A: Yes. Both the 23FD3755 and SFS37T55K384B-F are specified for motor run and power factor correction (PFC) applications. Electrical and mechanical characteristics are identical across both application categories.

Q: What packaging formats are available for these parts?

A: The 23FD3755 is supplied in standard packaging, while the SFS37T55K384B-F is available in bulk packaging. Both maintain identical electrical and mechanical specifications regardless of packaging format.