Equivalent & Substitute Parts for Cornell Dubilier Electronics 23FB4430

Part Overview

The Cornell Dubilier Electronics 23FB4430 is a 30 µF film capacitor rated for 440V AC operation, designed for motor run and power factor correction applications. This polypropylene metallized radial capacitor features a can-style package with quick connect termination and operates across a temperature range of -40°C to 70°C. The part is currently active in production with 804 units in stock. Substitute parts are identified to provide alternative sourcing options for applications requiring equivalent electrical and mechanical performance within specified parameter tolerances.

Substiute Parts

23FB4430

Cornell Dubilier Electronics (CDE)In Stock: 84623FB4430 Datasheet

Current PartRFQ

C878BF35300SA0J

KEMETIn Stock: 1320C878BF35300SA0J Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 23FB4430 is determined by the following critical parameters:

Primary Electrical Criteria:

• Capacitance value of 30 µF (exact match required)
• AC voltage rating equal to or greater than 440V
• Polypropylene metallized dielectric material
• Tolerance specification compatible with circuit requirements

Mechanical Criteria:

• Radial, can-style package configuration
• Quick connect termination compatibility
• Chassis or stud mount capability
• Physical dimensions permitting installation in existing mounting locations

The substitute part KEMET C878BF35300SA0J meets these criteria with a higher voltage rating (470V AC), tighter tolerance (±5%), and compatible mechanical configuration, making it suitable for direct substitution in the specified application.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (23FB4430): The Cornell Dubilier Electronics 23FB4430 is recommended for applications requiring RoHS non-compliant components or where legacy system compatibility is required. This part is active in production with established supply availability (804 units in stock).

Substitute Part Selection (C878BF35300SA0J): The KEMET C878BF35300SA0J is recommended as a direct substitute when ROHS3 compliance is required. This part offers superior electrical performance through a higher voltage rating (470V versus 440V) and tighter capacitance tolerance (±5% versus ±10%), providing enhanced design margin in motor run and power factor correction circuits. The extended operating temperature range (-25°C to 85°C) accommodates broader environmental conditions compared to the primary part.

Both parts maintain identical capacitance values, polypropylene metallized dielectric construction, and radial can package configuration, ensuring functional equivalence in specified applications.

Frequently Asked Questions (FAQ)

Q: Can the KEMET C878BF35300SA0J directly replace the Cornell Dubilier 23FB4430 in existing designs?

A: Yes. Both parts share identical capacitance (30 µF), dielectric material (polypropylene metallized), and package configuration (radial can). The KEMET part's higher voltage rating (470V) and tighter tolerance (±5%) provide equivalent or superior performance in motor run and power factor correction applications rated for 440V AC operation.

Q: What are the physical dimension differences between these parts?

A: The 23FB4430 has a diameter of 2.125" (53.98mm) with a maximum seated height of 4.000" (101.60mm) and lead spacing of 0.813" (20.64mm). The C878BF35300SA0J has a smaller diameter of 1.772" (45.00mm) with a maximum seated height of 3.937" (100.00mm) and lead spacing of 0.528" (13.40mm). Physical space constraints in the installation location must be verified before substitution.

Q: Are there compliance differences between these parts?

A: Yes. The 23FB4430 is RoHS non-compliant, while the C878BF35300SA0J is ROHS3 compliant. Both parts are REACH unaffected and classified under ECCN EAR99. Component selection should align with system-level compliance requirements.

Q: What is the significance of the tighter tolerance in the KEMET part?

A: The C878BF35300SA0J tolerance of ±5% provides tighter capacitance control compared to the 23FB4430 tolerance of ±10%. In power factor correction circuits, tighter tolerance reduces variation in reactive power compensation. In motor run applications, this provides more consistent performance across production batches.

Q: Are the termination types compatible?

A: Both parts feature quick connect termination. The 23FB4430 uses quick connect/disconnect termination with 0.813" lead spacing. The C878BF35300SA0J uses 0.250" (6.3mm) quick connect termination with 0.528" lead spacing. Mechanical compatibility with existing connection hardware must be verified during integration.