Equivalent & Substitute Parts for 23FD3735-F Film Capacitor

Part Overview

The Cornell Dubilier Electronics (CDE) 23FD3735-F is a 35 µF film capacitor rated for 370V AC operation with polypropylene metallized dielectric construction. This component is classified as obsolete product status, making identification of equivalent and substitute parts essential for ongoing system maintenance and component procurement. The 23FD3735-F is designed for motor run and power factor correction (PFC) applications requiring radial, can-style packaging with quick connect/disconnect termination.

Substiute Parts

23FD3735-F

Cornell Dubilier Electronics (CDE)In Stock: 91523FD3735-F Datasheet

Current PartRFQ

23FD3735A-F

Cornell Dubilier Electronics (CDE)In Stock: 83123FD3735A-F Datasheet

DirectRFQ

SFS37T35K291B-F

Cornell Dubilier Electronics (CDE)In Stock: 1105SFS37T35K291B-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 23FD3735-F is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Non-Negotiable):

• Capacitance value: 35 µF
• Tolerance: ±10%
• Voltage rating (AC): 370V
• Dielectric material: Polypropylene (PP), Metallized

Mechanical Parameters (Non-Negotiable):

• Package type: Radial, Can
• Mounting type: Chassis Mount, Requires Holder/Bracket
• Termination: Quick Connect, Disconnect

Environmental & Compliance Parameters:

• Operating temperature range: -40°C to 70°C
• RoHS3 compliance

Both identified substitute parts (23FD3735A-F and SFS37T35K291B-F) meet all critical electrical and mechanical parameters. Dimensional variations in height and diameter remain within acceptable tolerances for chassis-mounted can capacitors with holder/bracket requirements. Both substitutes are active product status, addressing the obsolescence of the original 23FD3735-F.

Parameter Comparison

Engineering Selection Recommendations

23FD3735A-F Selection Criteria: The 23FD3735A-F represents a direct series continuation within the MPF product line. This substitute maintains identical electrical specifications and lead spacing (0.813") with the original 23FD3735-F. Height reduction from 3.250" to 3.160" presents minimal impact on chassis-mounted applications utilizing holder/bracket systems. Active product status ensures long-term availability and supply chain continuity. ROHS3 compliance and MSL rating of 1 (Unlimited) match the original specification profile.

SFS37T35K291B-F Selection Criteria: The SFS37T35K291B-F operates within the SF series product line and delivers equivalent electrical performance across all critical parameters. Dimensional reduction (height: 3.030", diameter: 2.120") and minimal lead spacing variance (0.810" versus 0.813") remain compatible with standard chassis-mounted holder/bracket configurations. Active product status and ROHS3 compliance support long-term procurement viability. MSL rating listed as Not Applicable indicates this variant does not require moisture sensitivity level classification.

Both substitutes are sourced from the same manufacturer (Cornell Dubilier Electronics), ensuring consistency in manufacturing standards, quality control, and technical support documentation.

Frequently Asked Questions (FAQ)

Q: Can the 23FD3735A-F directly replace the obsolete 23FD3735-F in existing motor run applications?

A: Yes. The 23FD3735A-F maintains identical capacitance (35 µF), tolerance (±10%), voltage rating (370V AC), dielectric material (polypropylene metallized), operating temperature range (-40°C to 70°C), and termination style (quick connect/disconnect). Lead spacing and mounting requirements are identical. The 0.090" height reduction does not affect chassis-mounted holder/bracket installations.

Q: What is the primary difference between the 23FD3735A-F and SFS37T35K291B-F substitutes?

A: Both parts deliver identical electrical performance. The primary differences are series designation (MPF versus SF) and physical dimensions. The SFS37T35K291B-F exhibits reduced height (3.030" versus 3.160") and marginally smaller diameter (2.120" versus 2.125"). Lead spacing variance is 0.003" (0.810" versus 0.813"), which remains within acceptable tolerance for quick connect/disconnect termination systems.

Q: Are dimensional variations between substitutes compatible with existing PCB layouts and holder/bracket assemblies?

A: Yes. All three parts are classified as chassis-mounted, can-style capacitors requiring holder/bracket systems. Dimensional variations (maximum 0.220" height difference, 0.005" diameter difference) are accommodated within standard holder/bracket design tolerances for this component category.

Q: Do all substitute parts maintain ROHS3 compliance?

A: Yes. Both 23FD3735A-F and SFS37T35K291B-F are ROHS3 compliant, matching the original 23FD3735-F specification. Both substitutes are also REACH Unaffected, supporting regulatory compliance requirements across international markets.

Q: Which substitute part should be selected for new procurement?

A: Selection between 23FD3735A-F and SFS37T35K291B-F depends on specific application constraints. The 23FD3735A-F maintains closer dimensional alignment with the original part (identical lead spacing and diameter). The SFS37T35K291B-F offers reduced height, beneficial for space-constrained chassis installations. Both are active products with equivalent electrical specifications and compliance certifications.

Q: What is the moisture sensitivity level (MSL) difference between substitutes?

A: The 23FD3735A-F carries MSL rating 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling. The SFS37T35K291B-F lists MSL as Not Applicable, indicating this parameter does not apply to the SF series construction. Both ratings support standard warehouse storage and handling procedures without special environmental controls.