38FD3740-F

Part Overview

The 38FD3740-F is a 40 µF film capacitor rated at 370V AC, manufactured by Cornell Dubilier Electronics (CDE) from the MPF series. This component uses polypropylene (PP) metallized dielectric technology in a radial, can-style package designed for chassis mount applications with holder/bracket support. The part is currently obsolete, necessitating identification of active substitute components that maintain equivalent electrical and mechanical specifications for motor run and power factor correction (PFC) applications.

Substiute Parts

38FD3740-F

Cornell Dubilier Electronics (CDE)In Stock: 69838FD3740-F Datasheet

Current PartRFQ

38FD3740A-F

Cornell Dubilier Electronics (CDE)In Stock: 108438FD3740A-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 38FD3740-F is based on strict electrical and mechanical parameter matching:

Primary Electrical Parameters:

• Capacitance: 40 µF (exact match required)
• Voltage Rating (AC): 370V (exact match required)
• Tolerance: ±10% (exact match required)
• Dielectric Material: Polypropylene (PP), Metallized (exact match required)

Primary Mechanical Parameters:

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

The substitute part 38FD3740A-F matches all critical electrical and mechanical parameters while offering the advantage of active product status and increased inventory availability.

Parameter Comparison

Engineering Selection Recommendations

The 38FD3740A-F is the direct substitute for the 38FD3740-F, offering equivalent electrical and mechanical specifications while providing active product status. Both components are ROHS3 Compliant and suitable for motor run and power factor correction (PFC) applications. The 38FD3740A-F is available in bulk packaging with higher inventory levels (1,049 pieces in stock versus 655 pieces for the obsolete variant), making it the preferred selection for new designs and ongoing production requirements.

Frequently Asked Questions (FAQ)

Q: Can the 38FD3740A-F be used as a direct replacement for the 38FD3740-F? A: Yes. The 38FD3740A-F is electrically and mechanically equivalent to the 38FD3740-F, with identical capacitance (40 µF), voltage rating (370V AC), tolerance (±10%), dielectric material (Polypropylene, Metallized), package type (Radial, Can), mounting configuration (Chassis Mount with Holder/Bracket), lead spacing (0.813"), and termination style (Quick Connect, Disconnect).

Q: What is the physical size difference between these parts? A: The seated height differs slightly: 38FD3740-F has a maximum seated height of 3.250" (82.55mm), while 38FD3740A-F measures 3.160" (80.26mm). This 0.09" (2.29mm) reduction does not affect mechanical compatibility in applications using standard holder/bracket mounting.

Q: Are compliance certifications equivalent? A: Yes. Both the 38FD3740-F and 38FD3740A-F carry ROHS3 Compliance certification. The 38FD3740A-F additionally includes REACH Unaffected status. Both are classified under ECCN EAR99 and HTSUS 8532.25.0020.

Q: What applications are these capacitors rated for? A: Both parts are specified for motor run applications and power factor correction (PFC) circuits. Operating temperature range is -40°C to 70°C for both components.

Q: Why choose the 38FD3740A-F over the 38FD3740-F? A: The 38FD3740A-F is the active product status replacement. With 1,049 pieces in stock compared to 655 for the obsolete 38FD3740-F, it provides assured long-term availability and supply chain continuity while maintaining complete electrical and mechanical equivalence.