38FB4435-F Film Capacitor Equivalent & Substitute Parts

Part Overview

The 38FB4435-F is a 35 µF film capacitor rated for 440V AC operation, manufactured by Cornell Dubilier Electronics (CDE) from the MPF series. This component is designed for motor run and power factor correction (PFC) applications, featuring polypropylene metallized dielectric construction in a radial can package with quick connect/disconnect termination.

The 38FB4435-F is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain system functionality, ensure supply chain continuity, and support ongoing maintenance and replacement requirements for equipment utilizing this capacitor.

Key Parameters

Parameter	Value
Capacitance	35 µF
Voltage Rating - AC	440V
Tolerance	±10%
Dielectric Material	Polypropylene (PP), Metallized
Operating Temperature Range	-40°C ~ 70°C
Mounting Type	Chassis Mount, Requires Holder/Bracket
Package / Case	Radial, Can
Termination	Quick Connect, Disconnect
Lead Spacing	0.813" (20.64mm)
Applications	Motor Run; Power Factor Correction (PFC)

Substitute Part Grouping Explanation

Substitution of the 38FB4435-F is determined by strict equivalence across the following critical parameters:

Capacitance Value: 35 µF (exact match required)
Voltage Rating - AC: 440V (exact match required)
Tolerance: ±10% (exact match required)
Dielectric Material: Polypropylene (PP), Metallized (exact match required)
Operating Temperature Range: -40°C ~ 70°C (exact match required)
Package / Case: Radial, Can (exact match required)
Termination Type: Quick Connect, Disconnect (exact match required)
Lead Spacing: 0.813" (20.64mm) (exact match required)

The substitute part 38FB4435A-F meets all these criteria and is manufactured by the same supplier (Cornell Dubilier Electronics), ensuring functional and mechanical compatibility within the specified application envelope.

Parameter Comparison

Parameter	38FB4435-F (Main Part)	38FB4435A-F (Substitute)	Match Status
Manufacturer	Cornell Dubilier Electronics (CDE)	Cornell Dubilier Electronics (CDE)	Identical
Series	MPF	MPF	Identical
Capacitance	35 µF	35 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 ~ 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
Termination	Quick Connect, Disconnect	Quick Connect, Disconnect	Identical
Lead Spacing	0.813" (20.64mm)	0.813" (20.64mm)	Identical
Size / Dimension	3.654" L x 1.969" W (92.81mm x 50.01mm)	3.656" L x 1.969" W (92.87mm x 50.01mm)	Functionally Equivalent
Height - Seated (Max)	4.000" (101.60mm)	4.160" (105.66mm)	Functionally Equivalent
Product Status	Obsolete	Active	Substitute is Current
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Identical
ECCN	EAR99	EAR99	Identical
HTSUS	8532.25.0020	8532.25.0020	Identical

Engineering Selection Recommendations

The 38FB4435A-F is a direct substitute for the obsolete 38FB4435-F. Both components share identical electrical specifications, dielectric material, voltage rating, capacitance value, tolerance, and operating temperature range. The dimensional differences (length: 0.002" / 0.06mm; height: 0.160" / 4.06mm) are within normal manufacturing tolerances and do not affect functional compatibility in chassis-mounted applications with holder/bracket support.

The 38FB4435A-F carries active product status from Cornell Dubilier Electronics, ensuring ongoing availability and supply chain support. Both parts maintain ROHS3 compliance and identical export classification (EAR99), supporting regulatory and procurement requirements.

The substitute part is suitable for direct replacement in motor run and power factor correction (PFC) applications where the 38FB4435-F was originally specified.

Frequently Asked Questions (FAQ)

Q: Can the 38FB4435A-F be used as a direct replacement for the 38FB4435-F?

A: Yes. The 38FB4435A-F meets all electrical and mechanical specifications of the 38FB4435-F, including capacitance (35 µF), voltage rating (440V AC), tolerance (±10%), dielectric material (polypropylene metallized), operating temperature range (-40°C ~ 70°C), package type (radial can), termination style (quick connect/disconnect), and lead spacing (0.813"). Minor dimensional variations are within acceptable tolerances for chassis-mounted applications.

Q: What are the dimensional differences between these parts?

A: The 38FB4435A-F has a slightly longer length (3.656" vs. 3.654") and greater seated height (4.160" vs. 4.000"). These differences of 0.002" in length and 0.160" in height are within normal manufacturing variation and do not affect compatibility in applications using holder/bracket mounting.

Q: Why is the 38FB4435-F classified as obsolete?

A: The 38FB4435-F is no longer in active production. The 38FB4435A-F from the same MPF series serves as the current equivalent, maintaining identical electrical performance and specifications.

Q: Are there any compliance or certification differences?

A: No. Both parts are ROHS3 compliant, carry MSL rating of 1 (unlimited moisture sensitivity), and share identical ECCN (EAR99) and HTSUS (8532.25.0020) classifications.

Q: What applications are these capacitors suitable for?

A: Both the 38FB4435-F and 38FB4435A-F are designed for motor run and power factor correction (PFC) applications, operating at 440V AC with polypropylene metallized dielectric construction.

Q: Is the quick connect/disconnect termination compatible with existing equipment?

A: Yes. Both parts feature identical quick connect/disconnect termination, ensuring compatibility with existing connection infrastructure designed for the 38FB4435-F.

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