Equivalent & Substitute Parts for 32FB4404A-F

Part Overview

The 32FB4404A-F is a 4 µF film capacitor rated for 440V AC operation, manufactured by Cornell Dubilier Electronics (CDE) in the MPF series. This polypropylene metallized radial capacitor is designed for motor run and power factor correction applications. The part is currently active in production with 881 units in stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity when the primary part becomes unavailable or when alternative specifications meet application requirements.

Substiute Parts

32FB4404A-F

Cornell Dubilier Electronics (CDE)In Stock: 95832FB4404A-F Datasheet

Current PartRFQ

SFA44T4K219B-F

Cornell Dubilier Electronics (CDE)In Stock: 835SFA44T4K219B-F Datasheet

DirectRFQ

CAP-4/440R

Hartland Controls/LittelfuseIn Stock: 879CAP-4/440R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 32FB4404A-F are classified into two categories based on electrical and mechanical compatibility:

Direct Equivalent (Same Dielectric Technology): The SFA44T4K219B-F from Cornell Dubilier Electronics (CDE) is a direct equivalent. Both parts share identical electrical specifications: 4 µF capacitance, ±10% tolerance, 440V AC rating, polypropylene metallized dielectric, and -40°C to 70°C operating temperature. Both are radial can-type capacitors with quick connect termination. Physical dimensions are nearly identical (54.86mm L × 33.27mm W for SFA44T4K219B-F versus 54.76mm L × 33.35mm W for 32FB4404A-F), with maximum seated heights of 58.67mm and 61.98mm respectively. Both are ROHS3 compliant and rated for motor run applications. The SFA44T4K219B-F belongs to the SF series and has 819 units in stock.

Similar Substitute (Different Dielectric Technology): The CAP-4/440R from Hartland Controls/Littelfuse is a similar substitute with functional equivalence but different dielectric technology. This part maintains the same 4 µF capacitance and 440V rating, operates within the same -40°C to 70°C temperature range, and is rated for motor run applications. However, it is an aluminum electrolytic capacitor with ±3% tolerance (tighter than the film capacitor's ±10%), polar construction, and a rated lifetime of 60000 hours at 70°C. The CAP-4/440R uses quick connect terminals and is ROHS3 compliant. It is supplied in box packaging with 804 units in stock.

Substitution Logic:

• Capacitance and voltage rating are non-negotiable parameters; all substitutes must match exactly.
• Operating temperature range must encompass the application environment.
• Mounting type and termination must be compatible with the circuit board or chassis design.
• Dielectric material differences (film versus electrolytic) affect reliability, ESR, and ripple current handling; selection depends on application-specific requirements.
• Tolerance differences (±10% film versus ±3% electrolytic) may impact circuit performance in precision applications.

Parameter Comparison

Engineering Selection Recommendations

For Direct Substitution (SFA44T4K219B-F): The SFA44T4K219B-F is the preferred direct equivalent when the 32FB4404A-F is unavailable. Both parts are manufactured by the same supplier (CDE), employ identical dielectric technology (polypropylene metallized film), and carry matching electrical ratings and tolerances. Physical dimensions are nearly identical, ensuring mechanical compatibility in existing designs. Both parts are ROHS3 compliant and rated for motor run and power factor correction applications. The SFA44T4K219B-F is suitable for drop-in replacement without circuit redesign or performance degradation.

For Functional Substitution (CAP-4/440R): The CAP-4/440R is a functional substitute when dielectric technology flexibility is acceptable. This aluminum electrolytic capacitor maintains the same 4 µF capacitance and 440V rating, operates within the required temperature range, and is rated for motor run applications. The tighter ±3% tolerance may provide improved circuit performance in applications sensitive to capacitance variation. The rated lifetime of 60000 hours at 70°C supports long-term reliability in continuous-duty motor applications. However, the polar construction of electrolytic capacitors requires correct polarity installation, and the different dielectric technology may affect ripple current handling and ESR characteristics. This substitute is appropriate when the application circuit can accommodate electrolytic capacitor characteristics and when the tighter tolerance is beneficial.

Compliance Considerations: All three parts are ROHS3 compliant and carry REACH Unaffected status, meeting current environmental and regulatory requirements. All are classified under ECCN EAR99 for export control purposes.

Frequently Asked Questions (FAQ)

Q: Can the SFA44T4K219B-F replace the 32FB4404A-F in any application? A: Yes. The SFA44T4K219B-F is a direct equivalent with identical electrical specifications (4 µF, ±10%, 440V AC), matching dielectric material (polypropylene metallized), and compatible physical form factor (radial can with quick connect termination). Physical dimensions are nearly identical, and both parts are rated for motor run and power factor correction applications. No circuit modifications are required.

Q: What is the key difference between the film capacitor (32FB4404A-F) and the electrolytic capacitor (CAP-4/440R)? A: The 32FB4404A-F uses polypropylene metallized film dielectric, while the CAP-4/440R uses aluminum electrolytic dielectric. Film capacitors typically offer lower ESR, better ripple current handling, and non-polar construction. Electrolytic capacitors are polar and require correct polarity installation. The CAP-4/440R has a tighter tolerance (±3% versus ±10%) and a rated lifetime of 60000 hours at 70°C. Both maintain the same 4 µF capacitance and 440V rating.

Q: Are all three parts physically compatible with the same mounting bracket? A: The 32FB4404A-F and SFA44T4K219B-F have nearly identical dimensions (54.76mm × 33.35mm and 54.86mm × 33.27mm respectively) and are both radial can-type with quick connect termination, making them mechanically interchangeable. The CAP-4/440R is also a radial can-type with quick connect terminals but specific mounting dimensions are not provided in the available data. Verify physical fit before installation.

Q: Which substitute should be selected for a power factor correction (PFC) application? A: The SFA44T4K219B-F is the recommended choice for PFC applications. Both the 32FB4404A-F and SFA44T4K219B-F are explicitly rated for power factor correction. The CAP-4/440R is rated for motor run and HVAC applications but is not listed for PFC duty. Film capacitors are generally preferred for PFC applications due to superior ripple current handling and lower ESR.

Q: What is the significance of the ±3% tolerance on the CAP-4/440R compared to ±10% on the film capacitors? A: The ±3% tolerance on the CAP-4/440R provides tighter capacitance accuracy, meaning the actual capacitance will be closer to the nominal 4 µF value. This may be beneficial in applications where precise capacitance is critical for circuit performance. The ±10% tolerance on the film capacitors (32FB4404A-F and SFA44T4K219B-F) is typical for film capacitor technology and is acceptable for most motor run and PFC applications.

Q: Are all parts suitable for the -40°C to 70°C operating temperature range? A: Yes. All three parts are rated for -40°C to 70°C operation, meeting the same environmental requirements. This temperature range is suitable for industrial motor and HVAC applications.

Q: What is the inventory status for each part? A: The 32FB4404A-F has 881 units in stock, the SFA44T4K219B-F has 819 units in stock, and the CAP-4/440R has 804 units in stock. All parts are available as new original components.