SFS37S45K375B-F Film Capacitor 45µF 370VAC Equivalent & Substitute Parts

Part Overview

The SFS37S45K375B-F is a 45 µF film capacitor rated for 370VAC, manufactured by Cornell Dubilier Electronics (CDE) in the SF series. This polypropylene metallized radial capacitor is designed for motor run applications with a chassis mount configuration. The main part is currently obsolete, necessitating identification of active equivalent and substitute alternatives for continued system support and procurement.

Substiute Parts

SFS37S45K375B-F

Cornell Dubilier Electronics (CDE)In Stock: 1222SFS37S45K375B-F Datasheet

Current PartRFQ

SFS37T45K384B-F

Cornell Dubilier Electronics (CDE)In Stock: 815SFS37T45K384B-F Datasheet

DirectRFQ

SFS37S45K375B

Cornell Dubilier Electronics (CDE)In Stock: 875SFS37S45K375B Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SFS37S45K375B-F is based on electrical and mechanical parameter matching across the SF series from Cornell Dubilier Electronics. The critical parameters determining substitutability are:

• Capacitance Value: 45 µF (exact match required)
• Voltage Rating (AC): 370VAC (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)
• Lead Spacing: 0.810" (20.57mm) (exact match required)
• Mounting Configuration: Chassis Mount, Requires Holder/Bracket (exact match required)

The identified substitutes maintain identical electrical performance characteristics and mechanical compatibility, differing only in product status, packaging format, and physical height within acceptable tolerances for radial can capacitors.

Parameter Comparison

Engineering Selection Recommendations

SFS37T45K384B-F is the primary recommended substitute for the obsolete SFS37S45K375B-F. Both parts maintain ROHS3 compliance, identical electrical specifications, and active product status. The SFS37T45K384B-F differs only in packaging format (Bulk versus standard) and height specification (3.960" maximum versus 3.870" maximum), which falls within normal manufacturing tolerances for radial can capacitors.

SFS37S45K375B is an alternative parametric equivalent with identical dimensions to the main part and active product status. However, this part is RoHS non-compliant, making it unsuitable for applications with RoHS3 compliance requirements.

For new procurement, the SFS37T45K384B-F is the preferred selection due to active product status and regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can SFS37T45K384B-F directly replace SFS37S45K375B-F in existing designs? A: Yes. Electrical specifications, mounting configuration, lead spacing, and operating temperature range are identical between both parts. The height difference of 0.090" (2.28mm) is within standard manufacturing variance for radial can capacitors.

Q: What is the significance of the -F suffix in SFS37S45K375B-F? A: The -F suffix designates the termination specification (Quick Connect, Disconnect). Both substitute parts maintain this termination standard.

Q: Why is SFS37S45K375B not recommended as the primary substitute? A: While SFS37S45K375B maintains identical physical dimensions and electrical parameters, it carries RoHS non-compliant status. Applications requiring RoHS3 compliance must specify SFS37T45K384B-F.

Q: Are there packaging considerations when ordering substitutes? A: The SFS37T45K384B-F is supplied in Bulk packaging. The original SFS37S45K375B-F packaging format is not specified in standard configurations. Confirm packaging requirements with the supplier for procurement quantity planning.

Q: Do substitute parts require different holder brackets? A: No. All substitute parts share identical 2.120" diameter specifications and require the same chassis mount holder/bracket configuration as the original part.

Q: What compliance standards apply to SFS37T45K384B-F? A: The substitute meets ROHS3 compliance, REACH Unaffected status, and EAR99 export classification, matching the regulatory profile of the original SFS37S45K375B-F.