Equivalent & Substitute Parts for 32FD3706A-F

Part Overview

The 32FD3706A-F is a 6 µF film capacitor rated for 370V AC applications, manufactured by Cornell Dubilier Electronics (CDE) in the MPF series. This polypropylene (PP) metallized radial capacitor is designed for motor run and power factor correction (PFC) applications. The part is currently active in production with 816 units in stock. Alternative models are available to accommodate different voltage requirements, physical constraints, or series preferences while maintaining core electrical specifications.

Substiute Parts

32FD3706A-F

Cornell Dubilier Electronics (CDE)In Stock: 87032FD3706A-F Datasheet

Current PartRFQ

SFA37T6K219B-F

Cornell Dubilier Electronics (CDE)In Stock: 1227SFA37T6K219B-F Datasheet

DirectRFQ

32FB4406A-F

Cornell Dubilier Electronics (CDE)In Stock: 114132FB4406A-F Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitutes for the 32FD3706A-F are organized based on allowed electrical and mechanical parameters:

Direct Electrical Equivalent (SFA37T6K219B-F): This substitute maintains identical capacitance (6 µF), tolerance (±10%), and voltage rating (370V AC). The SF series offers the same dielectric material, operating temperature range, and mounting requirements. Dimensional variations are within tolerance for most applications: length 2.160" vs. 2.156", width 1.310" vs. 1.313", and height 2.310" vs. 2.440". Lead spacing differs slightly (0.810" vs. 0.813"). This part is categorized as a direct manufacturer equivalent.

Parametric Equivalent (32FB4406A-F): This substitute maintains identical capacitance (6 µF) and tolerance (±10%) but operates at a higher voltage rating of 440V AC versus the primary part's 370V AC. Both parts are from the same MPF series with identical physical dimensions, lead spacing, and mounting specifications. This higher voltage rating permits use in 370V circuits with increased voltage margin. The dielectric material, operating temperature, and termination type are identical to the main part.

Key Substitution Criteria:

• Capacitance: 6 µF (required, fixed)
• Tolerance: ±10% (required, fixed)
• Voltage Rating AC: 370V minimum
• Dielectric: Polypropylene (PP), Metallized
• Package: Radial, Can
• Operating Temperature: -40°C to 70°C
• Termination: Quick Connect, Disconnect

Parameter Comparison

Engineering Selection Recommendations

All three parts—32FD3706A-F, SFA37T6K219B-F, and 32FB4406A-F—are active products manufactured by Cornell Dubilier Electronics and comply with ROHS3 standards. Inventory availability is adequate across all options.

For 370V AC Applications: Either 32FD3706A-F or SFA37T6K219B-F is appropriate. The SFA37T6K219B-F (SF series) provides a direct voltage-rated equivalent with slight dimensional variations and higher inventory availability (1139 units vs. 816 units). Series selection depends on application-specific requirements and circuit board design constraints.

For Circuits Requiring Higher Voltage Margin: The 32FB4406A-F operates at 440V AC while maintaining identical capacitance, tolerance, and physical dimensions as the main part. This substitution is applicable when circuits operate below 370V but require additional voltage safety margin.

Frequently Asked Questions (FAQ)

Q: Can SFA37T6K219B-F be used as a direct drop-in replacement for 32FD3706A-F?

A: Yes. Both parts maintain 6 µF capacitance, ±10% tolerance, 370V AC rating, polypropylene dielectric, and identical quick connect termination. Dimensional differences are minor: SFA37T6K219B-F is 0.004" shorter in length and 0.003" narrower in width, with 0.003" less lead spacing. These variations fall within standard tolerances for radial can capacitors in chassis-mount applications.

Q: When should 32FB4406A-F be selected instead of 32FD3706A-F?

A: Select 32FB4406A-F when the application circuit operates below 370V AC but benefits from higher voltage rating. The 440V rating provides increased electrical safety margin without altering capacitance, tolerance, or physical dimensions. Both parts share identical case dimensions and lead spacing, permitting interchangeability in circuit designs.

Q: Are all substitutes RoHS compliant?

A: Yes. All three parts—32FD3706A-F, SFA37T6K219B-F, and 32FB4406A-F—are ROHS3 compliant and REACH unaffected, meeting current environmental regulations.

Q: What is the significance of series designation (MPF vs. SF)?

A: Series designation identifies the product family and internal construction. The main part (32FD3706A-F) and parametric equivalent (32FB4406A-F) belong to the MPF series, while the direct equivalent (SFA37T6K219B-F) belongs to the SF series. Series differences reflect internal design variations but do not affect electrical performance for the specified applications (motor run, power factor correction).

Q: Are dimensional differences between substitutes significant?

A: Minor dimensional variations exist between SFA37T6K219B-F and 32FD3706A-F. Length differs by 0.004" (54.86mm vs. 54.76mm), width by 0.003" (33.27mm vs. 33.35mm), height by 0.130" (58.67mm vs. 61.98mm), and lead spacing by 0.003" (20.57mm vs. 20.64mm). These differences are acceptable for most motor run and power factor correction circuits using radial can mounting.