24FD3745-F Film Capacitor Equivalent & Substitute Parts

Part Overview

The 24FD3745-F is a 45 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, featuring polypropylene (PP) metallized dielectric construction with radial, can-style packaging and quick connect/disconnect termination.

The 24FD3745-F is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain supply chain continuity for applications currently utilizing this component or for new designs requiring identical electrical and mechanical performance characteristics.

Substiute Parts

24FD3745-F

Cornell Dubilier Electronics (CDE)In Stock: 111024FD3745-F Datasheet

Current PartRFQ

24FD3745A-F

Cornell Dubilier Electronics (CDE)In Stock: 95824FD3745A-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 24FD3745-F is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Non-negotiable):

• Capacitance: 45 µF (exact match required)
• Voltage Rating (AC): 370V (exact match required)
• Tolerance: ±10% (exact match required)
• Dielectric Material: Polypropylene (PP), Metallized (exact match required)

Mechanical Parameters (Non-negotiable):

• Mounting Type: Chassis Mount, Requires Holder/Bracket
• Package / Case: Radial, Can
• Lead Spacing: 0.813" (20.64mm)
• Termination Type: Quick Connect, Disconnect

Environmental Parameters (Non-negotiable):

• Operating Temperature Range: -40°C ~ 70°C (minimum requirement)

Application Parameters:

• Motor Run and Power Factor Correction (PFC) applications

A substitute part must satisfy all electrical, mechanical, and environmental parameters listed above. Variations in any of these parameters disqualify a part from direct substitution.

Parameter Comparison

Engineering Selection Recommendations

The 24FD3745A-F is a direct electrical and mechanical equivalent to the 24FD3745-F. Both components are manufactured by Cornell Dubilier Electronics in the MPF series and satisfy identical specifications across all critical parameters: capacitance, voltage rating, tolerance, dielectric material, mounting configuration, lead spacing, and operating temperature range.

The primary distinction between these parts is product status: the 24FD3745-F is obsolete, while the 24FD3745A-F is in active production. The 24FD3745A-F is therefore the recommended substitute for new designs and for replacement in existing applications.

Both parts are ROHS3 compliant and carry MSL rating of 1 (Unlimited), indicating equivalent environmental and regulatory compliance. The 24FD3745A-F includes REACH Unaffected status documentation.

The 24FD3745A-F exhibits a maximum seated height of 3.160" (80.26mm) compared to 3.250" (82.55mm) for the 24FD3745-F. This 0.090" (2.29mm) reduction in height is compatible with existing mechanical installations and does not affect electrical performance or circuit operation.

Frequently Asked Questions (FAQ)

Q: Can the 24FD3745A-F be used as a direct replacement for the 24FD3745-F?

A: Yes. The 24FD3745A-F is a direct equivalent. All electrical parameters (capacitance, voltage rating, tolerance, dielectric material) and mechanical parameters (mounting type, package style, lead spacing, termination type) are identical. The substitute is shorter by 0.090" (2.29mm), which is compatible with standard mounting configurations.

Q: Why is the 24FD3745-F classified as obsolete?

A: Product obsolescence is determined by manufacturer production status. The 24FD3745-F has been discontinued by Cornell Dubilier Electronics. The 24FD3745A-F remains in active production and serves the same functional requirements.

Q: Are there any electrical performance differences between these parts?

A: No. Both parts are rated for 45 µF capacitance at 370V AC with ±10% tolerance, use identical polypropylene metallized dielectric construction, and operate across the same temperature range (-40°C ~ 70°C). Electrical performance is equivalent.

Q: What is the significance of the height difference?

A: The 24FD3745A-F is 0.090" (2.29mm) shorter than the 24FD3745-F. This reduction does not affect electrical operation and is compatible with standard chassis-mount installations using holder/bracket assemblies. Verify available vertical clearance in your specific application.

Q: Are both parts RoHS compliant?

A: Yes. Both the 24FD3745-F and 24FD3745A-F are ROHS3 compliant. The 24FD3745A-F additionally carries REACH Unaffected status.

Q: What is the lead spacing, and why is it important?

A: Both parts feature 0.813" (20.64mm) lead spacing. This dimension determines compatibility with mounting hole patterns and holder/bracket assemblies. Verify that your installation accommodates this spacing.

Q: Can these capacitors be used in applications other than motor run and power factor correction?

A: These components are specified for motor run and power factor correction (PFC) applications. Use in other applications requires verification that all electrical and environmental parameters remain within specified limits.

Q: What does MSL 1 (Unlimited) mean?

A: Moisture Sensitivity Level 1 indicates the lowest moisture sensitivity classification. These components can be stored indefinitely without special moisture control measures and do not require baking before soldering or assembly.