24FB4450-F Film Capacitor Equivalent & Substitute Parts

Part Overview

The 24FB4450-F is a 50 µF film capacitor rated for 440V 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 metallized dielectric construction with radial, can-style packaging and quick connect/disconnect termination.

The 24FB4450-F is classified as obsolete. Locating equivalent or substitute parts is necessary to support ongoing maintenance, repair, and replacement requirements for equipment utilizing this component. The substitute part 24FB4450A-F provides functional equivalence while maintaining active product status.

Key Parameters

Parameter	Value
Capacitance	50 µF
Tolerance	±10%
Voltage Rating (AC)	440V
Dielectric Material	Polypropylene (PP), Metallized
Operating Temperature Range	-40°C ~ 70°C
Mounting Type	Chassis Mount, Requires Holder/Bracket
Package / Case Style	Radial, Can
Lead Spacing	0.813" (20.64mm)
Termination Type	Quick Connect, Disconnect
Applications	Motor Run; Power Factor Correction (PFC)

Substitute Part Grouping Explanation

Substitution of the 24FB4450-F with the 24FB4450A-F is based on electrical and mechanical parameter equivalence. Both parts share identical specifications across all critical selection criteria:

Electrical Parameters (Identical):

Capacitance: 50 µF
Tolerance: ±10%
Voltage Rating (AC): 440V
Dielectric Material: Polypropylene (PP), Metallized
Operating Temperature Range: -40°C ~ 70°C

Mechanical Parameters (Identical):

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

Application Compatibility:

Motor Run
Power Factor Correction (PFC)

The 24FB4450A-F differs only in physical height dimension and product status, with no impact on electrical performance or functional compatibility in the specified applications.

Parameter Comparison

Parameter	24FB4450-F (Main Part)	24FB4450A-F (Substitute)	Match Status
Manufacturer	Cornell Dubilier Electronics (CDE)	Cornell Dubilier Electronics (CDE)	Identical
Series	MPF	MPF	Identical
Capacitance	50 µF	50 µF	Identical
Tolerance	±10%	±10%	Identical
Voltage Rating (AC)	440V	440V	Identical
Dielectric Material	Polypropylene (PP), Metallized	Polypropylene (PP), Metallized	Identical
Operating Temperature Range	-40°C ~ 70°C	-40°C ~ 70°C	Identical
Mounting Type	Chassis Mount, Requires Holder/Bracket	Chassis Mount, Requires Holder/Bracket	Identical
Package / Case	Radial, Can	Radial, Can	Identical
Lead Spacing	0.813" (20.64mm)	0.813" (20.64mm)	Identical
Termination	Quick Connect, Disconnect	Quick Connect, Disconnect	Identical
Height - Seated (Max)	3.870" (98.30mm)	4.160" (105.66mm)	Different
Product Status	Obsolete	Active	Different
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Identical

Engineering Selection Recommendations

The 24FB4450A-F is the direct substitute for the obsolete 24FB4450-F. Selection of the 24FB4450A-F is supported by the following factors:

Product Status: The 24FB4450A-F maintains active product status with CDE, ensuring continued availability and supply chain support. The 24FB4450-F is classified as obsolete, making the 24FB4450A-F the appropriate replacement for new designs and ongoing maintenance applications.

Electrical Equivalence: All electrical parameters are identical, including capacitance, voltage rating, tolerance, dielectric material, and operating temperature range. The component functions identically in motor run and power factor correction applications.

Mechanical Compatibility: Lead spacing, termination type, and mounting configuration are identical. The height difference of 0.290" (7.36mm) must be evaluated within the specific equipment enclosure or mounting bracket design to confirm physical fit.

Compliance: Both parts maintain ROHS3 compliance and identical moisture sensitivity ratings, supporting regulatory and environmental requirements.

Frequently Asked Questions (FAQ)

Q: Can the 24FB4450A-F be used as a direct replacement for the 24FB4450-F?

A: Yes. The 24FB4450A-F is electrically and functionally equivalent to the 24FB4450-F across all critical parameters: capacitance, voltage rating, tolerance, dielectric material, operating temperature range, lead spacing, and termination type. Physical height differs by 0.290" (7.36mm), which must be confirmed compatible with the equipment mounting bracket or enclosure.

Q: What is the primary difference between these two parts?

A: The 24FB4450A-F has a maximum seated height of 4.160" (105.66mm) compared to 3.870" (98.30mm) for the 24FB4450-F. Additionally, the 24FB4450A-F is active product status while the 24FB4450-F is obsolete. All electrical specifications are identical.

Q: Are both parts suitable for motor run applications?

A: Yes. Both the 24FB4450-F and 24FB4450A-F are rated for motor run and power factor correction (PFC) applications with identical electrical specifications.

Q: Do both parts require a holder or bracket for mounting?

A: Yes. Both parts are classified as chassis mount components requiring a holder or bracket. The lead spacing of 0.813" (20.64mm) must be accommodated in the mounting structure.

Q: What is the operating temperature range for these capacitors?

A: Both parts operate across the temperature range of -40°C to 70°C.

Q: Are these parts RoHS compliant?

A: Yes. Both the 24FB4450-F and 24FB4450A-F are ROHS3 compliant.

Q: What termination type do these capacitors use?

A: Both parts feature quick connect/disconnect termination, allowing for tool-free connection and disconnection in the circuit.

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