37FB4435-F Film Capacitor 35µF 440VAC Equivalent & Substitute Parts

Part Overview

The 37FB4435-F is a 35 µF film capacitor rated for 440V AC operation with polypropylene dielectric and metallized radial configuration. This component is designed for motor run and power factor correction applications. The original part carries an obsolete product status, making identification of current equivalent parts necessary to maintain system functionality and ensure supply chain continuity.

Substiute Parts

37FB4435-F

Cornell Dubilier Electronics (CDE)In Stock: 115237FB4435-F Datasheet

Current PartRFQ

37FB4435A-F

Cornell Dubilier Electronics (CDE)In Stock: 90637FB4435A-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The 37FB4435A-F qualifies as a direct substitute for the 37FB4435-F based on the following equivalence criteria:

Electrical Equivalence:

• Identical capacitance: 35 µF
• Identical tolerance: ±10%
• Identical voltage rating: 440V AC
• Identical dielectric material: Polypropylene (PP), Metallized
• Identical operating temperature range: -40°C to 70°C

Mechanical Equivalence:

• Identical package type: Radial, Can
• Identical mounting type: Chassis Mount, Requires Holder/Bracket
• Identical physical dimensions: 2.906" L x 1.906" W (approximately 73.8mm x 48.4mm)
• Identical height: 5.000" (127.00mm) seated maximum
• Identical lead spacing: 0.813" (20.64mm)
• Identical termination: Quick Connect, Disconnect

Certification & Compliance:

• Identical RoHS Status: ROHS3 Compliant
• Identical moisture sensitivity level: 1 (Unlimited)

The primary distinction is product status: 37FB4435A-F carries active product status with current inventory availability, while the original 37FB4435-F is obsolete.

Parameter Comparison

Engineering Selection Recommendations

The 37FB4435A-F is the appropriate direct replacement for applications currently utilizing the obsolete 37FB4435-F. Both components share identical electrical and mechanical specifications, with the substitute offering the advantage of active product status from Cornell Dubilier Electronics. The 37FB4435A-F maintains full ROHS3 compliance and carries the same performance characteristics required for motor run and power factor correction applications in 440V AC circuits.

Frequently Asked Questions (FAQ)

Q: Are these capacitors directly interchangeable? A: Yes. The 37FB4435A-F provides direct electrical and mechanical substitution for the 37FB4435-F. All critical parameters—capacitance, voltage rating, tolerance, operating temperature range, physical dimensions, lead spacing, and termination type—are identical.

Q: What determines the substitution compatibility? A: Substitution is valid when both components share identical values for: capacitance (35 µF), voltage rating (440V AC), tolerance (±10%), dielectric material (polypropylene metallized), operating temperature range (-40°C to 70°C), package type (radial can), mounting type (chassis mount with holder/bracket), physical dimensions, and termination method (quick connect/disconnect).

Q: Does the difference in product status affect performance? A: No. The difference in product status (obsolete versus active) reflects manufacturing availability and supply chain status only. It does not affect component performance or electrical characteristics.

Q: What is the significance of the part number change from 37FB4435-F to 37FB4435A-F? A: The "A" designation in the substitute part number indicates a current production revision or variant from Cornell Dubilier Electronics. Both versions are from the same MPF series and maintain identical functional specifications.

Q: Can these capacitors be used in motor run and power factor correction applications? A: Yes. Both the original and substitute components are rated for these specific applications and provide the 440V AC voltage rating required for these circuits.

Q: Are there any packaging or mounting considerations? A: Both components require chassis mounting with a holder/bracket and use quick connect/disconnect termination. Physical dimensions are essentially identical (with negligible manufacturing tolerance differences), permitting direct mechanical substitution in existing assemblies.