DSF050J684 Film Capacitor - Equivalent & Substitute Parts

Part Overview

The DSF050J684 is a 0.68 µF film capacitor rated at 50V DC, manufactured by Cornell Dubilier Electronics (CDE) in the DSF series. This component is a through-hole radial polyester metallized film capacitor designed for general-purpose applications. The part is currently obsolete, making equivalent substitutes necessary for ongoing production, maintenance, and repair applications. Substitute parts must maintain the same capacitance value, tolerance, and mounting characteristics while meeting or exceeding the voltage rating and operating temperature requirements.

Substiute Parts

DSF050J684

Cornell Dubilier Electronics (CDE)In Stock: 927DSF050J684 Datasheet

Current PartRFQ

B32529C0684J189

EPCOS - TDK ElectronicsIn Stock: 14074B32529C0684J189 Datasheet

DirectRFQ

ECQ-E2564JBB

Panasonic Electronic ComponentsIn Stock: 695ECQ-E2564JBB Datasheet

SimilarRFQ

R82DC3680AA60J

KEMETIn Stock: 32921R82DC3680AA60J Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the DSF050J684 is determined by the following critical parameters:

Primary Substitution Criteria:

• Capacitance value: 0.68 µF (exact match required)
• Tolerance: ±5% (exact match required)
• Voltage rating: Minimum 50V DC (equal or higher acceptable)
• Dielectric type: Polyester, metallized film (same family)
• Mounting: Through-hole radial configuration
• Lead spacing: 0.197" (5.00mm) pitch
• Termination: PC pins

Substitution Categories:

Direct Substitutes (Identical Electrical & Mechanical Parameters): Parts that match all critical parameters with voltage ratings at or above 50V DC and compatible physical dimensions.

Compatible Substitutes (Acceptable Electrical Parameters with Minor Physical Variations): Parts that maintain identical electrical specifications but may have slight dimensional differences that remain compatible with standard PCB layouts and through-hole mounting.

Parameter Comparison

Engineering Selection Recommendations

Recommended Direct Substitutes:

B32529C0684J189 (EPCOS - TDK Electronics) and R82DC3680AA60J (KEMET) are the primary substitutes for the DSF050J684. Both parts maintain identical capacitance (0.68 µF), tolerance (±5%), and lead spacing (5.00mm). Both feature higher voltage ratings (63V DC) than the original specification, providing enhanced safety margin. Both are ROHS3 compliant and carry AEC-Q200 automotive ratings, indicating production quality standards. Operating temperature ranges exceed the original part's specification, with EPCOS rated to -55°C ~ 125°C and KEMET to -55°C ~ 105°C. Physical dimensions are comparable and compatible with standard through-hole PCB layouts.

Alternative Substitute:

ECQ-E2564JBB (Panasonic Electronic Components) is a compatible substitute with the same tolerance and lead spacing. However, this part has a capacitance value of 0.56 µF rather than 0.68 µF, representing an 17.6% reduction in capacitance. This part carries a significantly higher voltage rating of 250V DC and is suitable only for applications where the lower capacitance value is acceptable and the higher voltage rating is beneficial. This part is not recommended as a direct replacement without circuit analysis.

Selection Basis:

• All recommended substitutes are active products with established supply chains
• ROHS3 compliance ensures regulatory alignment with current manufacturing standards
• Lead spacing and mounting type compatibility eliminates PCB redesign requirements
• Voltage rating upgrades provide operational safety margins without circuit modification

Frequently Asked Questions (FAQ)

Q: Can B32529C0684J189 directly replace DSF050J684 without PCB modification?

A: Yes. Both parts share identical capacitance (0.68 µF), tolerance (±5%), lead spacing (5.00mm), and radial through-hole mounting. Physical dimensions are compatible with standard PCB layouts designed for the original part.

Q: What is the significance of the higher voltage rating in substitute parts?

A: The B32529C0684J189 and R82DC3680AA60J both feature 63V DC ratings compared to the original 50V DC specification. This provides a 26% voltage safety margin, reducing stress on the dielectric material and extending component life in the application.

Q: Why is ECQ-E2564JBB listed as a substitute if the capacitance differs?

A: ECQ-E2564JBB is listed as a similar part due to matching tolerance, lead spacing, and mounting type. However, the 0.56 µF capacitance represents a significant deviation from the 0.68 µF specification. This part is suitable only for applications where capacitance value adjustment is acceptable or where the 250V rating is specifically required.

Q: Are there physical dimension differences between the main part and substitutes?

A: Minor dimensional variations exist. The DSF050J684 has a maximum seated height of 0.433" (11.00mm). The B32529C0684J189 measures 0.374" (9.50mm) and R82DC3680AA60J measures 0.378" (9.60mm). These differences are within standard PCB clearance tolerances for through-hole components. The ECQ-E2564JBB is larger at 0.665" (16.90mm) and may require clearance verification.

Q: Do all substitute parts meet the same compliance standards?

A: Yes. All substitute parts listed are ROHS3 compliant and REACH unaffected. The B32529C0684J189 and R82DC3680AA60J carry AEC-Q200 automotive ratings, indicating compliance with automotive-grade reliability standards.

Q: What is the operating temperature consideration for substitution?

A: The original DSF050J684 operates from -40°C to 85°C. Both B32529C0684J189 (-55°C ~ 125°C) and R82DC3680AA60J (-55°C ~ 105°C) exceed this range, providing enhanced performance in temperature-sensitive applications. ECQ-E2564JBB operates from -40°C to 105°C, matching the lower temperature limit of the original.

Q: Can these parts be used interchangeably in existing designs?

A: B32529C0684J189 and R82DC3680AA60J are direct electrical and mechanical equivalents and can be used interchangeably. ECQ-E2564JBB requires circuit analysis due to capacitance deviation and should not be assumed as a direct interchange without verification.