Equivalent & Substitute Parts for 24FB4445-F Film Capacitor

Part Overview

The Cornell Dubilier Electronics (CDE) 24FB4445-F is a 45 µF film capacitor rated for 440V AC operation, designed for motor run and power factor correction applications. This component features polypropylene metallized dielectric construction in a radial can package with quick connect termination. The 24FB4445-F carries an obsolete product status, making identification of active equivalent parts essential for procurement and system maintenance.

Key Parameters

Parameter	Value
Capacitance	45 µF
Tolerance	±10%
Voltage Rating (AC)	440V
Dielectric Material	Polypropylene (PP), Metallized
Package Type	Radial, Can
Mounting Type	Chassis Mount, Requires Holder/Bracket
Termination	Quick Connect, Disconnect
Operating Temperature Range	-40°C to 70°C
Series	MPF

Substitute Part Grouping Explanation

Substitution of the 24FB4445-F is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Non-Negotiable):

Capacitance: 45 µF
Tolerance: ±10%
Voltage Rating (AC): 440V
Dielectric Material: Polypropylene (PP), Metallized

Mechanical Parameters (Non-Negotiable):

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

Allowable Variations:

Height dimension (seated maximum): Variation permitted within physical installation constraints
Product Status: Active status preferred for ongoing availability
Packaging format: Bulk or standard packaging acceptable

The substitute part 24FB4445A-F meets all electrical and mechanical equivalence criteria while offering active product status and improved availability.

Parameter Comparison

Parameter	24FB4445-F (Main Part)	24FB4445A-F (Substitute)	Match Status
Manufacturer	Cornell Dubilier Electronics (CDE)	Cornell Dubilier Electronics (CDE)	Identical
Series	MPF	MPF	Identical
Capacitance	45 µF	45 µF	Identical
Tolerance	±10%	±10%	Identical
Voltage Rating (AC)	440V	440V	Identical
Dielectric Material	Polypropylene (PP), Metallized	Polypropylene (PP), Metallized	Identical
Operating Temperature	-40°C to 70°C	-40°C to 70°C	Identical
Package Type	Radial, Can	Radial, Can	Identical
Mounting Type	Chassis Mount, Requires Holder/Bracket	Chassis Mount, Requires Holder/Bracket	Identical
Termination	Quick Connect, Disconnect	Quick Connect, Disconnect	Identical
Lead Spacing	0.813" (20.64mm)	0.813" (20.64mm)	Identical
Height - Seated (Max)	3.250" (82.55mm)	4.160" (105.66mm)	Variation Allowed
Product Status	Obsolete	Active	Improved Status
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Identical
ECCN	EAR99	EAR99	Identical
HTSUS Code	8532.25.0020	8532.25.0020	Identical

Engineering Selection Recommendations

The 24FB4445A-F serves as a direct functional equivalent to the obsolete 24FB4445-F. Selection between these parts is based on the following engineering criteria:

For New Designs and Replacements: The 24FB4445A-F is the appropriate selection. This part maintains identical electrical and mechanical specifications while offering active product status, ensuring long-term availability and supply chain continuity. Both parts carry ROHS3 compliance and identical regulatory classifications (EAR99, HTSUS 8532.25.0020).

Physical Installation Consideration: The 24FB4445A-F has a maximum seated height of 4.160" (105.66mm) compared to the 24FB4445-F at 3.250" (82.55mm). Installation space must accommodate this 0.910" (22.86mm) height difference. Both parts require identical holder/bracket mounting infrastructure and maintain the same 0.813" (20.64mm) lead spacing.

Compliance and Certification: Both parts are ROHS3 compliant with MSL rating of 1 (unlimited moisture sensitivity). The 24FB4445A-F includes REACH Unaffected status documentation.

Frequently Asked Questions (FAQ)

Q: Can the 24FB4445A-F directly replace the 24FB4445-F in existing installations?

A: Yes, provided the installation space accommodates the increased height of 4.160" (105.66mm). All electrical parameters, lead spacing, termination type, and mounting requirements are identical. The quick connect/disconnect termination ensures compatibility with existing holder/bracket assemblies.

Q: What is the significance of the height difference between these parts?

A: The 24FB4445A-F is 0.910" (22.86mm) taller than the 24FB4445-F. This dimension must be verified against available installation space before substitution. The height difference does not affect electrical performance or functional compatibility.

Q: Are there any compliance or regulatory differences between these parts?

A: No. Both parts carry identical ROHS3 compliance, EAR99 export classification, and HTSUS code 8532.25.0020. The 24FB4445A-F includes additional REACH Unaffected documentation.

Q: Why is the 24FB4445-F listed as obsolete?

A: The 24FB4445-F carries obsolete product status. The 24FB4445A-F is the active equivalent within the CDE MPF series, providing continued availability for motor run and power factor correction applications.

Q: Are the electrical specifications identical between these parts?

A: Yes. Both parts are 45 µF, ±10% tolerance, 440V AC rated film capacitors with polypropylene metallized dielectric. Operating temperature range, voltage rating, and all electrical parameters are identical.

Q: What applications are these capacitors suitable for?

A: Both the 24FB4445-F and 24FB4445A-F are specified for motor run and power factor correction (PFC) applications requiring 440V AC operation.

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