37FD3735-F Film Capacitor Equivalent & Substitute Parts

Part Overview

The 37FD3735-F is a 35 µF film capacitor rated for 370V AC operation, manufactured by Cornell Dubilier Electronics (CDE) in the MPF series. This component is designed for motor run and power factor correction (PFC) applications using polypropylene (PP) metallized dielectric technology with radial, can-style packaging and quick connect termination.

The 37FD3735-F is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain system functionality and ensure continued availability for replacement and repair applications. Substitute parts must maintain electrical performance and mechanical compatibility within the specified parameter tolerances.

Substiute Parts

37FD3735-F

Cornell Dubilier Electronics (CDE)In Stock: 69737FD3735-F Datasheet

Current PartRFQ

37FD3735A-F

Cornell Dubilier Electronics (CDE)In Stock: 111937FD3735A-F Datasheet

DirectRFQ

SFC37T35K291B-F

Cornell Dubilier Electronics (CDE)In Stock: 1101SFC37T35K291B-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 37FD3735-F are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Electrical Parameters (Must Match Exactly):

• Capacitance: 35 µF
• Tolerance: ±10%
• Voltage Rating (AC): 370V
• Dielectric Material: Polypropylene (PP), Metallized
• Operating Temperature Range: -40°C to 70°C

Mechanical Parameters (Must Match or Be Compatible):

• Package Type: Radial, Can
• Mounting Type: Chassis Mount, Requires Holder/Bracket
• Termination: Quick Connect, Disconnect
• Lead Spacing: Within 0.813" ± tolerance
• Physical Dimensions: Compatible with standard mounting configurations

Compliance Parameters:

• RoHS3 Compliance required
• ECCN: EAR99
• HTSUS: 8532.25.0020

All identified substitutes meet these criteria and are suitable for direct replacement in motor run and power factor correction applications.

Parameter Comparison

Engineering Selection Recommendations

37FD3735A-F (Primary Substitute): The 37FD3735A-F is the direct successor to the 37FD3735-F within the same MPF series. This part maintains identical electrical specifications and mechanical compatibility. The 37FD3735A-F carries active product status, ensuring long-term availability and supply chain continuity. Physical dimensions are virtually identical to the main part, with only minor height variation (4.160" vs. 4.000"). This part is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The 37FD3735A-F is the recommended primary substitute for direct replacement applications.

SFC37T35K291B-F (Secondary Substitute): The SFC37T35K291B-F is an alternative substitute from the SF series, also manufactured by Cornell Dubilier Electronics. This part meets all electrical requirements and maintains compatibility with motor run and power factor correction applications. The SFC37T35K291B-F features a more compact height (3.030" vs. 4.000"), which may provide advantages in space-constrained installations. Lead spacing is 0.810" (20.57mm), within acceptable tolerance of the original 0.813" (20.64mm). This part is ROHS3 compliant and REACH unaffected. The SFC37T35K291B-F is suitable for applications where reduced height is beneficial or where the original part is unavailable.

Both substitutes are active products with confirmed inventory availability and meet all compliance and regulatory standards applicable to the original component.

Frequently Asked Questions (FAQ)

Q: Can the 37FD3735A-F be used as a direct replacement for the 37FD3735-F?

A: Yes. The 37FD3735A-F is electrically and mechanically compatible with the 37FD3735-F. Both parts share identical capacitance (35 µF), voltage rating (370V AC), tolerance (±10%), dielectric material (polypropylene metallized), operating temperature range (-40°C to 70°C), and termination type (quick connect/disconnect). Physical dimensions are nearly identical, with only a 0.160" height difference. The 37FD3735A-F is the direct successor within the MPF series.

Q: What is the difference between the 37FD3735A-F and SFC37T35K291B-F?

A: Both parts are electrically equivalent 35 µF, 370V AC film capacitors with polypropylene metallized dielectric. The primary differences are series designation (MPF vs. SF), height (4.160" vs. 3.030"), and lead spacing (0.813" vs. 0.810"). The SFC37T35K291B-F is more compact, making it suitable for space-limited applications. Both are active products with ROHS3 compliance.

Q: Are there any mechanical compatibility concerns when substituting these parts?

A: The 37FD3735A-F presents minimal mechanical concerns due to nearly identical dimensions. The SFC37T35K291B-F has a significantly reduced height (3.030" vs. 4.000"), which is advantageous for compact installations but requires verification that the mounting bracket and holder accommodate the shorter profile. Lead spacing differences (0.813" vs. 0.810") are within acceptable tolerance for quick connect termination systems.

Q: Do these substitute parts meet current regulatory requirements?

A: Yes. Both the 37FD3735A-F and SFC37T35K291B-F are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards. Both carry EAR99 ECCN classification and 8532.25.0020 HTSUS code, consistent with the original part.

Q: What applications are these capacitors suitable for?

A: These film capacitors are designed for motor run and power factor correction (PFC) applications. The 35 µF capacitance and 370V AC rating are standard for AC motor starting and running circuits, as well as industrial power factor correction systems. Operating temperature range of -40°C to 70°C supports both indoor and moderately temperature-controlled environments.

Q: Is the 37FD3735-F still available for purchase?

A: The 37FD3735-F is classified as obsolete. However, 674 units are currently in stock as new original inventory. For long-term supply assurance, the active-status substitutes 37FD3735A-F (1012 units) and SFC37T35K291B-F (999 units) are recommended for new designs and future replacement requirements.