Equivalent & Substitute Parts for 32FD3704A-F

Part Overview

The 32FD3704A-F is a 4 µF film capacitor rated for 370V 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 1178 units in stock. Substitute parts are identified to provide alternative sourcing options when the primary part number is unavailable or when application requirements permit selection from compatible alternatives within the same electrical and mechanical parameter ranges.

Substiute Parts

32FD3704A-F

Cornell Dubilier Electronics (CDE)In Stock: 122132FD3704A-F Datasheet

Current PartRFQ

SFA37T4K156B-F

Cornell Dubilier Electronics (CDE)In Stock: 1205SFA37T4K156B-F Datasheet

DirectRFQ

SFA37T4K219B-F

Cornell Dubilier Electronics (CDE)In Stock: 1285SFA37T4K219B-F Datasheet

DirectRFQ

SFA44T4K219B-F

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

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 32FD3704A-F are identified based on strict electrical and mechanical compatibility criteria. The substitution logic is organized as follows:

Group 1: Direct Electrical Equivalents (370V AC Rating)

• SFA37T4K156B-F
• SFA37T4K219B-F

These parts maintain identical electrical specifications: 4 µF capacitance, ±10% tolerance, 370V AC rating, polypropylene metallized dielectric, and -40°C ~ 70°C operating temperature. All three parts share the same lead spacing (0.810" to 0.813"), quick connect termination, and chassis mount configuration. Differences exist only in maximum seated height: the main part (32FD3704A-F) reaches 2.440", while SFA37T4K156B-F reaches 1.680" and SFA37T4K219B-F reaches 2.310". These height variations permit substitution in applications where physical envelope constraints allow the alternative dimension.

Group 2: Voltage-Elevated Equivalent (440V AC Rating)

• SFA44T4K219B-F

This part shares all electrical and mechanical parameters with the main part except for voltage rating: 440V AC instead of 370V AC. The 440V rating provides higher voltage margin and permits substitution in 370V applications where elevated voltage capability is acceptable. Physical dimensions and lead spacing are identical to SFA37T4K219B-F (2.310" maximum seated height, 0.810" lead spacing).

All substitute parts are manufactured by Cornell Dubilier Electronics (CDE), carry ROHS3 compliance, and are classified as Active products with confirmed inventory availability.

Parameter Comparison

Engineering Selection Recommendations

Selection among the 32FD3704A-F and its substitutes is determined by three primary factors: voltage rating requirement, physical envelope constraints, and product availability.

For 370V AC Applications with Standard Height Envelope: The 32FD3704A-F (2.440" maximum seated height) and SFA37T4K219B-F (2.310" maximum seated height) are both suitable. Both parts are Active products with ROHS3 compliance and adequate inventory. The SFA37T4K219B-F offers a compact height advantage while maintaining all electrical specifications. Lead spacing differences (0.813" versus 0.810") are negligible for chassis mount applications.

For 370V AC Applications with Compact Height Requirement: The SFA37T4K156B-F is specified at 1.680" maximum seated height, providing the most compact form factor. This part maintains all electrical parameters and ROHS3 compliance. Selection is appropriate when physical space constraints limit component height.

For 440V AC Applications or Elevated Voltage Margin: The SFA44T4K219B-F provides 440V AC rating while maintaining 4 µF capacitance, ±10% tolerance, and identical physical dimensions to SFA37T4K219B-F (2.310" maximum seated height). This part is suitable for applications where 370V operation is required but higher voltage capability is acceptable or preferred for system reliability.

All substitute parts are manufactured by Cornell Dubilier Electronics (CDE), carry Active product status, maintain ROHS3 compliance, and are available in confirmed inventory quantities. Selection should be based on specific application voltage requirements and available physical space for component mounting.

Frequently Asked Questions (FAQ)

Q: Can SFA37T4K156B-F be used as a direct replacement for 32FD3704A-F?

A: SFA37T4K156B-F is electrically equivalent to 32FD3704A-F with identical capacitance (4 µF), tolerance (±10%), voltage rating (370V AC), dielectric material (polypropylene metallized), and operating temperature range (-40°C ~ 70°C). The primary difference is maximum seated height: 1.680" versus 2.440". Substitution is valid when the compact height is compatible with the application's physical envelope. Lead spacing is nearly identical (0.810" versus 0.813"), and both use quick connect termination.

Q: What is the difference between SFA37T4K219B-F and SFA44T4K219B-F?

A: Both parts share identical physical dimensions (2.310" maximum seated height, 0.810" lead spacing), capacitance (4 µF), tolerance (±10%), dielectric material (polypropylene metallized), and operating temperature range (-40°C ~ 70°C). The sole difference is voltage rating: SFA37T4K219B-F is rated 370V AC, while SFA44T4K219B-F is rated 440V AC. The 440V part provides higher voltage margin and is suitable for 370V applications where elevated voltage capability is acceptable.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. The 32FD3704A-F and all three substitute parts (SFA37T4K156B-F, SFA37T4K219B-F, SFA44T4K219B-F) are ROHS3 compliant. All parts carry REACH Unaffected status and are classified under ECCN EAR99.

Q: What is the lead spacing tolerance between the main part and substitutes?

A: The 32FD3704A-F specifies 0.813" (20.64mm) lead spacing, while all three substitute parts specify 0.810" (20.57mm) lead spacing. The difference of 0.003" (0.07mm) is within typical chassis mount application tolerances and does not affect compatibility with standard quick connect termination systems.

Q: Can these parts be used interchangeably in motor run applications?

A: All four parts are specified for motor run applications. Electrical interchangeability is confirmed for 32FD3704A-F, SFA37T4K156B-F, and SFA37T4K219B-F at 370V AC. The SFA44T4K219B-F is also suitable for motor run applications and provides 440V AC rating. Physical envelope constraints (component height) must be verified for each application before substitution.

Q: What inventory quantities are available for each part?

A: Current inventory levels are: 32FD3704A-F (1178 units), SFA37T4K156B-F (1108 units), SFA37T4K219B-F (1194 units), and SFA44T4K219B-F (819 units). All parts are listed as new original stock.

Q: Are there any differences in moisture sensitivity between the main part and substitutes?

A: The 32FD3704A-F specifies Moisture Sensitivity Level (MSL) 1 (Unlimited). The three substitute parts (SFA37T4K156B-F, SFA37T4K219B-F, SFA44T4K219B-F) specify MSL as Not Applicable. This indicates the substitute parts do not require moisture-sensitive device handling procedures.