37FD3730A-F Film Capacitor Equivalent & Substitute Parts

Part Overview

The 37FD3730A-F is a 30 µF film capacitor rated for 370V AC operation, manufactured by Cornell Dubilier Electronics (CDE) in the MPF series. This polypropylene metallized radial capacitor is designed for motor run and power factor correction (PFC) applications requiring chassis mount installation with a holder or bracket. The part is currently active in production with 757 units in stock. Substitute parts are identified to provide alternative sourcing options when the primary part number is unavailable or when inventory requirements necessitate alternative stock sources.

Substiute Parts

37FD3730A-F

Cornell Dubilier Electronics (CDE)In Stock: 82037FD3730A-F Datasheet

Current PartRFQ

SFC37T30K291B-F

Cornell Dubilier Electronics (CDE)In Stock: 1612SFC37T30K291B-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 37FD3730A-F is determined by equivalence across the following critical parameters:

• Capacitance Value: 30 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)
• Package Configuration: Radial, Can with Quick Connect/Disconnect termination (exact match required)
• Mounting Requirement: Chassis Mount with Holder/Bracket (exact match required)
• Regulatory Compliance: ROHS3 Compliant and REACH Unaffected (exact match required)

The substitute part SFC37T30K291B-F meets all critical electrical and mechanical parameters, differing only in series designation (SF versus MPF) and minor dimensional variations within acceptable tolerances for the application category.

Parameter Comparison

Engineering Selection Recommendations

Both the 37FD3730A-F and SFC37T30K291B-F are active production parts manufactured by Cornell Dubilier Electronics and carry identical electrical specifications for motor run and power factor correction applications. Selection between these parts is based on the following factors:

Primary Part (37FD3730A-F): Use when the MPF series designation is specified in the original design documentation or when existing inventory stock of 757 units is available for immediate deployment.

Substitute Part (SFC37T30K291B-F): Use when the primary part is unavailable or when higher inventory availability (1504 units in stock) is required. The SF series substitute maintains full electrical equivalence and regulatory compliance (ROHS3 Compliant, REACH Unaffected). Dimensional variations are within acceptable tolerances for chassis mount applications with holder/bracket installation.

Both parts are suitable for applications operating within the -40°C to 70°C temperature range and require identical mounting infrastructure. No design modifications are necessary when substituting between these part numbers.

Frequently Asked Questions (FAQ)

Q: Can the SFC37T30K291B-F be used as a direct replacement for the 37FD3730A-F?

A: Yes. Both parts are manufactured by Cornell Dubilier Electronics with identical electrical specifications: 30 µF capacitance, ±10% tolerance, 370V AC rating, polypropylene metallized dielectric, and -40°C to 70°C operating temperature range. Dimensional variations (length, width, height, and lead spacing) are within acceptable tolerances for chassis mount applications.

Q: What is the difference between the MPF and SF series designations?

A: The series designation indicates the product line within Cornell Dubilier Electronics' film capacitor portfolio. Both MPF (37FD3730A-F) and SF (SFC37T30K291B-F) series meet the same electrical and regulatory requirements for this application. Series differences do not affect functional performance or compatibility.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts are ROHS3 Compliant and REACH Unaffected. Both carry identical regulatory status and are suitable for applications requiring these certifications.

Q: What mounting considerations apply to both parts?

A: Both the 37FD3730A-F and SFC37T30K291B-F are chassis mount radial can capacitors that require a holder or bracket for installation. Both use Quick Connect/Disconnect termination. Existing mounting infrastructure designed for one part accommodates the other without modification.

Q: How do the dimensional differences affect installation?

A: Dimensional variations between the parts are minimal. The substitute part (SFC37T30K291B-F) has a slightly smaller seated height (3.030" versus 3.160") and marginally different length and width measurements. These variations remain within standard tolerances for radial can capacitor applications and do not require changes to holder/bracket specifications.

Q: Which part should be selected for new designs?

A: Either part is acceptable for new designs. Selection may be based on inventory availability, supply chain considerations, or existing relationships with Cornell Dubilier Electronics. Both parts provide equivalent performance and reliability for motor run and power factor correction applications.