37FD3720-F Film Capacitor - Equivalent & Substitute Parts

Part Overview

The Cornell Dubilier Electronics (CDE) 37FD3720-F is a 20 µF film capacitor rated for 370V AC applications, designed for motor run and power factor correction (PFC) circuits. This part is classified as Obsolete, necessitating identification of active equivalent models for ongoing system support and procurement. The substitute part identified maintains identical electrical specifications and mechanical form factors, enabling direct replacement in existing installations.

Substiute Parts

37FD3720-F

Cornell Dubilier Electronics (CDE)In Stock: 88437FD3720-F Datasheet

Current PartRFQ

37FD3720A-F

Cornell Dubilier Electronics (CDE)In Stock: 106237FD3720A-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The substitute part 37FD3720A-F is classified as a Direct Manufacturer equivalent based on the following matched parameters:

• Capacitance and Tolerance: Identical 20 µF ±10%
• Voltage Rating: Identical 370V AC
• Dielectric Material: Identical Polypropylene (PP), Metallized
• Operating Temperature Range: Identical -40°C to 70°C
• Mounting Configuration: Identical Chassis Mount with Holder/Bracket requirement
• Package Type: Identical Radial Can geometry
• Lead Spacing: Identical 0.813" (20.64mm)
• Regulatory Compliance: Both ROHS3 Compliant; substitute includes REACH Unaffected designation

The primary differentiator is product status: the original part is Obsolete, while the substitute maintains Active status, ensuring continued availability and manufacturing support.

Parameter Comparison

Engineering Selection Recommendations

The 37FD3720A-F substitute is the direct manufacturer-approved replacement for the 37FD3720-F. Both components share identical electrical specifications and mechanical compatibility. The substitute part maintains the same ROHS3 compliance and regulatory classification (EAR99, HTSUS 8532.25.0020). The transition to the Active status part is necessary for continued system procurement and support, as the original part has reached end-of-life status with the manufacturer.

The minor physical height reduction (2.630" vs. 2.880") does not affect electrical performance or circuit compatibility and is within typical manufacturing tolerance variation for radial can geometries.

Frequently Asked Questions (FAQ)

Q: Can the 37FD3720A-F directly replace the 37FD3720-F in existing circuits? A: Yes. Both parts share identical capacitance (20 µF), tolerance (±10%), voltage rating (370V AC), dielectric material (Polypropylene Metallized), operating temperature range (-40°C to 70°C), and mechanical mounting configuration (Chassis Mount, Radial Can).

Q: What is the primary reason for substitution? A: The 37FD3720-F is Obsolete status. The 37FD3720A-F is the Active manufacturer equivalent, ensuring continued availability and procurement support.

Q: Are there any dimensional compatibility concerns? A: The overall footprint remains identical (2.906" L x 1.906" W, Lead Spacing 0.813"). The seated height difference (2.630" vs. 2.880") is within manufacturing tolerance and does not affect circuit board layout or enclosure fitment.

Q: Do both parts meet the same regulatory requirements? A: Yes. Both parts are ROHS3 Compliant and classified under EAR99 export control and HTSUS code 8532.25.0020. The substitute includes additional REACH Unaffected designation.

Q: Which applications are supported by the substitute part? A: The 37FD3720A-F supports identical applications: Motor Run and Power Factor Correction (PFC) circuits, with the same -40°C to 70°C operating temperature range.

Q: Is inventory availability a consideration for selection? A: Both parts maintain stock status as new original components, with the substitute (37FD3720A-F) currently available at higher inventory levels (1028 Pcs vs. 854 Pcs).