38FD3735-F Film Capacitor Equivalent & Substitute Parts

Part Overview

The 38FD3735-F is a 35 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 metallized dielectric construction with radial can packaging and quick connect termination.

The 38FD3735-F is classified as obsolete. Locating direct replacements becomes necessary when inventory depletion occurs or when system redesigns require active product status for supply chain continuity and manufacturer support.

Key Parameters

Parameter	Value
Capacitance	35 µF
Tolerance	±10%
Voltage Rating (AC)	370V
Dielectric Material	Polypropylene (PP), Metallized
Operating Temperature Range	-40°C to 70°C
Package Type	Radial, Can
Mounting Type	Chassis Mount, Requires Holder/Bracket
Termination	Quick Connect, Disconnect
Lead Spacing	0.813" (20.64mm)
Applications	Motor Run; Power Factor Correction (PFC)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 38FD3735-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 style: Quick Connect, Disconnect
Lead spacing: 0.813" (20.64mm)

Environmental & Compliance Parameters:

Operating temperature range: -40°C to 70°C
RoHS3 Compliance

The substitute part 38FD3735A-F meets all electrical, mechanical, and compliance requirements. The primary distinction is product status: 38FD3735A-F is active, whereas 38FD3735-F is obsolete.

Parameter Comparison

Parameter	38FD3735-F (Main Part)	38FD3735A-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)	370V	370V	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
Size / Dimension	3.654" L x 1.969" W (92.81mm x 50.01mm)	3.654" L x 1.969" W (92.81mm x 50.01mm)	Identical
Height - Seated (Max)	3.250" (82.55mm)	3.160" (80.26mm)	Compatible (Substitute is 0.090" shorter)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
MSL Rating	1 (Unlimited)	1 (Unlimited)	Identical
Product Status	Obsolete	Active	Substitute is Active

Engineering Selection Recommendations

Direct Substitution Eligibility: 38FD3735A-F

The 38FD3735A-F is a direct electrical and mechanical equivalent to the 38FD3735-F. Both components are manufactured by Cornell Dubilier Electronics within the MPF series and share identical electrical specifications, dielectric composition, and mechanical mounting characteristics.

Compliance & Supply Chain Advantages:

The 38FD3735A-F holds active product status, ensuring ongoing manufacturer support, documented supply availability, and compliance with current regulatory frameworks. Both parts maintain ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Physical Compatibility Note:

The seated height of 38FD3735A-F is 3.160" (80.26mm), compared to 3.250" (82.55mm) for the 38FD3735-F. This 0.090" (2.29mm) reduction in height is within typical mechanical tolerances for chassis-mounted capacitor applications and does not affect electrical performance or functional compatibility.

Frequently Asked Questions (FAQ)

Q: Can 38FD3735A-F be used as a direct replacement for 38FD3735-F in motor run applications?

A: Yes. Both capacitors are rated for 35 µF at 370V AC with polypropylene metallized dielectric construction. Electrical performance and motor run application compatibility are identical. The quick connect termination and lead spacing (0.813") are unchanged.

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

A: The 38FD3735A-F is 0.090" shorter in seated height. This dimension reduction does not affect electrical function or standard chassis mounting configurations. Verify available clearance in your specific mechanical assembly if height constraints exist.

Q: Why is 38FD3735-F classified as obsolete?

A: Product obsolescence reflects manufacturer discontinuation decisions. The 38FD3735A-F provides functional continuity with active status, ensuring long-term availability and manufacturer technical support.

Q: Are there any compliance differences between these parts?

A: No. Both parts are ROHS3 compliant, carry MSL 1 rating (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 38FD3735-F and 38FD3735A-F are specified for motor run and power factor correction (PFC) applications requiring 370V AC rated film capacitors with radial can packaging.

Q: Is the packaging format identical between these parts?

A: Electrical and mechanical packaging are identical. The 38FD3735-F is supplied in standard packaging, while 38FD3735A-F is supplied in bulk packaging. This distinction does not affect component performance or compatibility.

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