23FB4440-F Film Capacitor Equivalent & Substitute Parts

Part Overview

The 23FB4440-F is a 40 µF film capacitor rated for 440V AC operation, manufactured by Cornell Dubilier Electronics (CDE) from the MPF series. This radial, metallized polypropylene capacitor is designed for motor run and power factor correction (PFC) applications in industrial equipment. The part is currently listed as obsolete, making identification of equivalent and substitute components essential for system maintenance, repair, and redesign projects.

Substiute Parts

23FB4440-F

Cornell Dubilier Electronics (CDE)In Stock: 103123FB4440-F Datasheet

Current PartRFQ

23FB4440A-F

Cornell Dubilier Electronics (CDE)In Stock: 116323FB4440A-F Datasheet

DirectRFQ

23FB4440

Cornell Dubilier Electronics (CDE)In Stock: 110923FB4440 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 23FB4440-F is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Capacitance value: 40 µF (exact match required)
• Voltage rating: 440V AC (minimum requirement)
• Tolerance: ±10% (acceptable range for application)
• Dielectric material: Polypropylene (PP), Metallized (functional requirement for motor run and PFC applications)

Mechanical Parameters:

• Mounting type: Chassis Mount, Requires Holder/Bracket
• Package type: Radial, Can
• Physical dimensions: 2.125" Dia (53.98mm), Lip
• Lead spacing: 0.813" (20.64mm)
• Termination: Quick Connect, Disconnect

Environmental Parameters:

• Operating temperature range: -40°C ~ 70°C
• Moisture sensitivity: MSL 1 (Unlimited)

Substitute parts must match all electrical and mechanical parameters to ensure direct compatibility without circuit modification or mechanical rework. The following parts satisfy these criteria.

Parameter Comparison

Engineering Selection Recommendations

23FB4440A-F (Direct Substitute - Recommended)

The 23FB4440A-F is the primary substitute for the obsolete 23FB4440-F. This part maintains identical electrical and mechanical specifications across all critical parameters. The 23FB4440A-F is currently in active production status with 1132 units in stock. The maximum seated height is 4.090" (103.88mm) compared to 4.000" (101.60mm) for the original part; this 0.090" (2.28mm) difference is within typical mechanical tolerances for chassis-mounted capacitor applications. Both parts carry ROHS3 compliance and are classified as REACH Unaffected. The 23FB4440A-F is supplied in bulk packaging and is suitable for direct replacement in motor run and power factor correction circuits without circuit modification.

23FB4440 (Parametric Equivalent - Alternative)

The 23FB4440 is a parametric equivalent that matches all electrical specifications and mechanical dimensions of the original part. This part is in active production with 1056 units in stock. The seated height matches the original specification at 4.000" (101.60mm). However, this part is RoHS non-compliant, whereas the original 23FB4440-F and the recommended substitute 23FB4440A-F are both ROHS3 compliant. Selection of the 23FB4440 should be limited to applications where RoHS compliance is not a regulatory requirement.

Frequently Asked Questions (FAQ)

Q: Can the 23FB4440A-F be used as a direct replacement for the 23FB4440-F?

A: Yes. The 23FB4440A-F is electrically and mechanically equivalent to the 23FB4440-F across all critical parameters: 40 µF capacitance, 440V AC rating, ±10% tolerance, polypropylene metallized dielectric, radial can package, and identical lead spacing. The maximum seated height difference of 0.090" (2.28mm) is within acceptable mechanical tolerances for chassis-mounted applications. No circuit modification or mechanical rework is required.

Q: What is the difference between the 23FB4440A-F and the 23FB4440?

A: Both parts are parametrically equivalent with identical electrical specifications and core mechanical dimensions. The primary difference is RoHS compliance status: the 23FB4440A-F is ROHS3 compliant, while the 23FB4440 is RoHS non-compliant. Additionally, the 23FB4440A-F is in active production status, whereas the 23FB4440 may have limited long-term availability. For new designs and applications subject to RoHS regulations, the 23FB4440A-F is the appropriate selection.

Q: Are there any mechanical considerations when substituting these parts?

A: The 23FB4440A-F has a maximum seated height of 4.090" (103.88mm) compared to 4.000" (101.60mm) for the original 23FB4440-F. This 0.090" (2.28mm) difference should be verified against available space in the equipment chassis. All other mechanical parameters, including diameter (2.125" / 53.98mm), lead spacing (0.813" / 20.64mm), and termination type (Quick Connect, Disconnect), are identical and require no modification.

Q: Can these capacitors be used in applications other than motor run and power factor correction?

A: The specifications provided identify motor run and power factor correction as the intended applications. Use in other applications should be evaluated against the operating temperature range (-40°C ~ 70°C), voltage rating (440V AC), and dielectric properties of the polypropylene metallized film. Application-specific validation is required for uses outside the stated categories.

Q: What is the significance of the MSL 1 (Unlimited) rating?

A: MSL 1 (Unlimited) indicates that the capacitor has unlimited shelf life and does not require special moisture-controlled storage conditions. This classification applies to all three parts in this comparison and simplifies inventory management and logistics.