Equivalent & Substitute Parts for 32FD3701-F Film Capacitor

Part Overview

The Cornell Dubilier Electronics (CDE) 32FD3701-F is a 1 µF film capacitor rated for 370V AC operation with polypropylene dielectric material in a radial, can-style package. This component is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing system maintenance and component procurement. The part is designed for motor run and power factor correction applications requiring reliable AC voltage performance.

Substiute Parts

32FD3701-F

Cornell Dubilier Electronics (CDE)In Stock: 84532FD3701-F Datasheet

Current PartRFQ

32FD3701A-F

Cornell Dubilier Electronics (CDE)In Stock: 74232FD3701A-F Datasheet

DirectRFQ

SFA66T1K156B-F

Cornell Dubilier Electronics (CDE)In Stock: 985SFA66T1K156B-F Datasheet

DirectRFQ

SFA66T1K219B-F

Cornell Dubilier Electronics (CDE)In Stock: 1139SFA66T1K219B-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 32FD3701-F are grouped based on strict electrical and mechanical compatibility criteria. The primary substitution logic is as follows:

Group 1 - Direct Voltage Rating Match (370V AC): The part 32FD3701A-F maintains identical electrical specifications: 1 µF capacitance, ±10% tolerance, 370V AC rating, polypropylene dielectric, and radial can package. This part differs only in product status (Active vs. Obsolete) and packaging format (Bulk vs. standard). The 32FD3701A-F is the direct active equivalent.

Group 2 - Higher Voltage Rating (660V AC): The parts SFA66T1K156B-F and SFA66T1K219B-F are rated for 660V AC operation. These substitutes are electrically compatible in applications where the 370V AC rating is sufficient, as higher voltage-rated capacitors can operate safely at lower voltages. Both maintain 1 µF capacitance, ±10% tolerance, polypropylene dielectric, and radial can package. These parts differ in series designation (SF vs. MPF) and physical height dimensions.

Key Parameters Determining Substitution:

• Capacitance value: 1 µF (all substitutes match)
• Tolerance: ±10% (all substitutes match)
• Dielectric material: Polypropylene (PP), Metallized (all substitutes match)
• Package type: Radial, Can (all substitutes match)
• Termination: Quick Connect, Disconnect (all substitutes match)
• Operating temperature: -40°C ~ 70°C (all substitutes match)
• Mounting type: Chassis Mount, Requires Holder/Bracket (all substitutes match)

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Preferred): The 32FD3701A-F is the recommended substitute for the obsolete 32FD3701-F. This part maintains identical electrical specifications and mechanical compatibility while offering active product status and ongoing manufacturer support. Both parts are ROHS3 compliant and share the same MPF series designation. The 32FD3701A-F is available in bulk packaging with 663 units in stock.

For Higher Voltage Applications: The SFA66T1K156B-F and SFA66T1K219B-F are suitable substitutes when system design permits operation at higher voltage ratings. These parts are rated for 660V AC, providing additional voltage margin in applications where the original 370V AC specification is not a limiting constraint. Both are active products with ROHS3 compliance and REACH unaffected status. The SFA66T1K219B-F offers greater physical height (2.310" vs. 1.680"), providing options for different mounting configurations.

Compliance Considerations: All substitute parts maintain ROHS3 compliance, ensuring regulatory alignment with the original component. The 32FD3701A-F and higher-voltage alternatives (SFA66T1K156B-F, SFA66T1K219B-F) are all active products with established supply chains, reducing long-term obsolescence risk.

Frequently Asked Questions (FAQ)

Q: Can the 32FD3701A-F be used as a direct replacement for the 32FD3701-F? A: Yes. The 32FD3701A-F is electrically and mechanically identical to the 32FD3701-F, with matching capacitance (1 µF), tolerance (±10%), voltage rating (370V AC), dielectric material (polypropylene), package type (radial can), and lead spacing (0.813"). The primary difference is product status: 32FD3701A-F is active while 32FD3701-F is obsolete.

Q: What is the difference between the 370V and 660V rated substitutes? A: The 32FD3701-F and 32FD3701A-F are rated for 370V AC operation. The SFA66T1K156B-F and SFA66T1K219B-F are rated for 660V AC. Higher voltage-rated capacitors can safely operate at lower voltages. Selection depends on system voltage requirements and available space, as the 660V-rated parts have different physical dimensions.

Q: Are there mechanical compatibility concerns when substituting with SFA66T1K156B-F or SFA66T1K219B-F? A: Lead spacing is nearly identical (0.813" vs. 0.810"), ensuring compatibility with standard mounting brackets. However, physical height differs: SFA66T1K156B-F is 1.680" (42.67mm) and SFA66T1K219B-F is 2.310" (58.67mm), compared to the original 2.380" (60.45mm). Verify available mounting space before selection.

Q: Are all substitute parts RoHS compliant? A: Yes. The 32FD3701-F, 32FD3701A-F, SFA66T1K156B-F, and SFA66T1K219B-F are all ROHS3 compliant, meeting environmental and regulatory requirements.

Q: What is the moisture sensitivity level for these capacitors? A: The 32FD3701-F and 32FD3701A-F have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. The SFA66T1K156B-F and SFA66T1K219B-F have MSL Not Applicable, reflecting their film capacitor construction.

Q: Can these capacitors be used in motor run and power factor correction applications? A: Yes. All listed parts are rated for motor run and power factor correction (PFC) applications. The polypropylene dielectric and metallized construction provide the electrical characteristics required for these applications.