38FD3750-F Film Capacitor Equivalent & Substitute Parts

Part Overview

The 38FD3750-F is a 50 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 (PP) metallized dielectric construction with radial, can-style packaging and quick connect/disconnect termination.

The 38FD3750-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. Active production alternatives with identical electrical and mechanical specifications are available to ensure system continuity.

Substiute Parts

38FD3750-F

Cornell Dubilier Electronics (CDE)In Stock: 95238FD3750-F Datasheet

Current PartRFQ

38FD3750A-F

Cornell Dubilier Electronics (CDE)In Stock: 91238FD3750A-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 38FD3750-F is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Capacitance value: 50 µF (exact match required)
• Tolerance: ±10% (exact match required)
• Voltage rating (AC): 370V (exact match required)
• Dielectric material: Polypropylene (PP), Metallized (exact match required)
• Operating temperature range: -40°C to 70°C (exact match required)

Mechanical Parameters:

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

Compliance Parameters:

• RoHS3 Compliance (required for regulatory alignment)

The substitute part 38FD3750A-F meets all electrical, mechanical, and compliance requirements for direct substitution. The primary distinction is product status: the original part is obsolete, while the substitute is active production.

Parameter Comparison

Engineering Selection Recommendations

The 38FD3750A-F is a direct equivalent substitute for the obsolete 38FD3750-F. Selection is based on the following engineering criteria:

Electrical Equivalence: Both parts are identical in capacitance (50 µF), tolerance (±10%), AC voltage rating (370V), and dielectric composition (polypropylene, metallized). Both operate across the same temperature range (-40°C to 70°C) and are suitable for motor run and power factor correction applications.

Mechanical Compatibility: The substitute maintains identical lead spacing (0.813"), termination style (quick connect/disconnect), mounting configuration (chassis mount with holder/bracket requirement), and primary dimensions (3.654" L x 1.969" W). The seated height difference (3.250" versus 3.160") is within acceptable mechanical tolerance and does not affect functional performance or installation compatibility.

Regulatory Compliance: Both parts are ROHS3 compliant, ensuring alignment with current environmental and regulatory standards. The substitute carries REACH Unaffected status, providing additional compliance documentation.

Product Status: The substitute part is in active production, ensuring availability and supply chain continuity for ongoing maintenance and replacement requirements.

Frequently Asked Questions (FAQ)

Q: Can the 38FD3750A-F be used as a direct replacement for the 38FD3750-F?

A: Yes. The 38FD3750A-F is a direct equivalent substitute. All electrical parameters (capacitance, voltage rating, tolerance, dielectric material, temperature range) and mechanical parameters (lead spacing, termination style, mounting type, package dimensions) are identical. The seated height difference (0.090" or 2.29mm) is within acceptable mechanical tolerance and does not affect installation or performance.

Q: What is the primary reason for substitution?

A: The 38FD3750-F is classified as obsolete. The 38FD3750A-F is the active production equivalent from the same manufacturer (Cornell Dubilier Electronics) and series (MPF), ensuring continued availability and supply chain support.

Q: Are there any compliance differences between the two parts?

A: Both parts are ROHS3 compliant. The substitute (38FD3750A-F) additionally carries REACH Unaffected status. No compliance barriers exist for substitution.

Q: Does the height difference affect installation?

A: The substitute is 0.090" (2.29mm) shorter in seated height (3.160" versus 3.250"). This difference is within standard mechanical tolerance and does not affect mounting in chassis-mount applications with holder/bracket configurations. Verify clearance in the specific installation environment if space constraints are critical.

Q: Are the electrical characteristics identical?

A: Yes. Both parts are 50 µF ±10% film capacitors rated for 370V AC operation with polypropylene metallized dielectric. Operating temperature range, lead spacing, and termination style are identical. Both are suitable for motor run and power factor correction applications.

Q: What is the inventory status?

A: The main part (38FD3750-F) has 917 pieces in stock as new original inventory. The substitute (38FD3750A-F) has 847 pieces in stock as new original inventory in bulk packaging.