37FB44175-F Film Capacitor Equivalent & Substitute Parts

Part Overview

The 37FB44175-F is a 17.5 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE) from the MPF series, rated for 440V AC operation. This component is designed for motor run and power factor correction (PFC) applications, utilizing polypropylene (PP) metallized dielectric technology in a radial can package with quick connect/disconnect termination.

The 37FB44175-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 repair operations for equipment utilizing this component.

Substiute Parts

37FB44175-F

Cornell Dubilier Electronics (CDE)In Stock: 100937FB44175-F Datasheet

Current PartRFQ

37FB44175A-F

Cornell Dubilier Electronics (CDE)In Stock: 100037FB44175A-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 37FB44175-F is determined by strict equivalence across the following parameters:

Electrical Parameters (Non-negotiable):

• Capacitance value: 17.5 µF
• AC voltage rating: 440V minimum
• Tolerance: ±10%
• Dielectric material: Polypropylene (PP), Metallized

Mechanical Parameters (Non-negotiable):

• Package configuration: Radial, Can
• Termination type: Quick Connect, Disconnect
• Lead spacing: 0.813" (20.64mm)
• Mounting classification: Chassis Mount, Requires Holder/Bracket

Environmental & Compliance Parameters (Required):

• Operating temperature range: -40°C ~ 70°C minimum
• RoHS3 compliance status

The substitute part 37FB44175A-F meets all electrical, mechanical, and compliance requirements for direct substitution. The primary distinction between the main part and substitute is product status (obsolete versus active) and packaging classification (tape versus bulk), with a minor dimensional variance in seated height that does not affect functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: 37FB44175A-F

The 37FB44175A-F is the direct equivalent for the obsolete 37FB44175-F. Selection of this substitute is based on the following engineering criteria:

Electrical Equivalence: Both parts maintain identical capacitance (17.5 µF), voltage rating (440V AC), tolerance (±10%), and dielectric composition (polypropylene metallized). These parameters ensure functional interchangeability in motor run and power factor correction applications.

Mechanical Compatibility: Lead spacing, package configuration, and termination type are identical, confirming direct mechanical fit in existing mounting structures and connection points.

Compliance Status: Both parts are ROHS3 compliant and carry identical export classification (EAR99) and tariff codes (8532.25.0020), ensuring regulatory and supply chain compatibility.

Product Status Advantage: The 37FB44175A-F is classified as active production, providing assured long-term availability and supply chain stability compared to the obsolete 37FB44175-F.

Dimensional Consideration: The seated height variance (2.880" versus 3.160") represents a 0.280" (7.11mm) increase. This minor difference does not affect electrical performance or standard chassis mounting applications but should be verified in space-constrained installations where vertical clearance is limited.

Frequently Asked Questions (FAQ)

Q: Can the 37FB44175A-F be used as a direct replacement for the 37FB44175-F?

A: Yes. The 37FB44175A-F is electrically and mechanically equivalent to the 37FB44175-F. Both parts share identical capacitance, voltage rating, tolerance, dielectric material, package type, termination configuration, and lead spacing. The substitute is suitable for direct installation in applications previously using the main part.

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

A: The 37FB44175A-F has a maximum seated height of 3.160" (80.26mm) compared to 2.880" (73.15mm) for the 37FB44175-F. This 0.280" (7.11mm) difference is minor and does not affect standard chassis mounting applications. However, in installations with restricted vertical clearance or tight enclosure geometry, physical fit should be confirmed before component selection.

Q: Are there any differences in environmental operating conditions?

A: No. Both parts operate across the identical temperature range of -40°C to 70°C and carry the same moisture sensitivity level (MSL 1 - Unlimited), indicating equivalent environmental performance and handling requirements.

Q: Why is the 37FB44175-F classified as obsolete?

A: The 37FB44175-F is no longer in active production. The 37FB44175A-F represents the current production equivalent from Cornell Dubilier Electronics, offering the same electrical and mechanical specifications with assured supply chain availability.

Q: Are both parts RoHS compliant?

A: Yes. Both the 37FB44175-F and 37FB44175A-F are ROHS3 compliant, meeting current environmental and regulatory standards for electronic component manufacturing and use.

Q: What applications are these capacitors designed for?

A: Both parts are specified for motor run and power factor correction (PFC) applications, utilizing 440V AC rated polypropylene film dielectric technology suitable for industrial and commercial equipment.

Q: Is there any difference in packaging or supply format?

A: The main part (37FB44175-F) is supplied in tape packaging, while the substitute (37FB44175A-F) is supplied in bulk packaging. This distinction affects order quantities and handling but does not impact component performance or compatibility.