DSF100J333 Equivalent & Substitute Parts Reference

Part Overview

The DSF100J333 is a 0.033 µF film capacitor rated for 100V DC operation, manufactured by Cornell Dubilier Electronics (CDE) in the DSF series. This component features polyester metallized-stacked dielectric construction with radial through-hole mounting, designed for general-purpose applications across industrial and consumer electronics.

The DSF100J333 carries an obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for legacy systems utilizing this component.

Substiute Parts

DSF100J333

Cornell Dubilier Electronics (CDE)In Stock: 944DSF100J333 Datasheet

Current PartRFQ

185333J100RCA-F

Cornell Dubilier Electronics (CDE)In Stock: 857185333J100RCA-F Datasheet

DirectRFQ

R82EC2330AA50J

KEMETIn Stock: 31465R82EC2330AA50J Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DSF100J333 are identified based on strict electrical and mechanical parameter alignment. The following criteria determine substitution validity:

Primary Matching Criteria:

• Capacitance value: 0.033 µF (exact match required)
• Tolerance: ±5% (exact match required)
• Voltage Rating - DC: 100V minimum (equal or higher acceptable)
• Dielectric Material: Polyester, Metallized (same family required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: Radial (exact match required)
• Lead Spacing: 0.197" (5.00mm) (exact match required)
• Termination: PC Pins (exact match required)

Secondary Compatibility Factors:

• Operating Temperature Range: Substitute must encompass or exceed the original range (-40°C ~ 85°C)
• Physical Dimensions: Substitute dimensions must not exceed PCB layout constraints
• RoHS Compliance: ROHS3 Compliant status maintained across all substitutes

Two substitute parts meet these criteria and are listed below.

Parameter Comparison

Engineering Selection Recommendations

185333J100RCA-F (Cornell Dubilier Electronics - Active Status)

This substitute maintains manufacturer continuity with the original DSF100J333, both sourced from Cornell Dubilier Electronics. The 185 series represents an active product line with extended operating temperature range (-55°C ~ 125°C), providing superior thermal performance compared to the obsolete DSF series. Physical dimensions are reduced (7.20mm x 2.50mm vs. 7.50mm x 3.20mm), enabling improved PCB layout efficiency. Tape & Reel packaging supports automated assembly processes. ROHS3 compliance and REACH unaffected status confirm regulatory alignment. This option is suitable for applications requiring manufacturer consistency and active product support.

R82EC2330AA50J (KEMET - Active Status, Automotive Qualified)

This substitute provides cross-manufacturer compatibility with AEC-Q200 automotive qualification, indicating enhanced reliability screening and process controls. The KEMET R82 series operates across -55°C ~ 105°C, exceeding the original operating range. Physical dimensions match the 185333J100RCA-F (7.20mm x 2.50mm), supporting identical PCB footprints. Bulk packaging and significantly higher inventory (31,385 pcs) ensure supply chain availability. ROHS3 compliance and REACH unaffected status maintain regulatory requirements. This option is suitable for high-volume production, automotive applications, or situations requiring maximum supply security.

Both substitutes satisfy all mandatory electrical and mechanical parameters. Selection between them depends on supply chain strategy, packaging requirements, and application-specific qualification needs.

Frequently Asked Questions (FAQ)

Q: Can the DSF100J333 be directly replaced with either substitute part?

A: Yes. Both 185333J100RCA-F and R82EC2330AA50J meet all mandatory electrical parameters (0.033 µF, ±5%, 100V DC) and mechanical requirements (radial through-hole, 5.00mm lead spacing, PC pins). Both are ROHS3 compliant and maintain identical functional performance in the circuit.

Q: What is the difference in physical size between the main part and substitutes?

A: The DSF100J333 measures 7.50mm L x 3.20mm W x 8.00mm H (seated). Both substitutes measure 7.20mm L x 2.50mm W with heights of 6.50mm (185333J100RCA-F) or 6.60mm (R82EC2330AA50J). Substitutes are physically smaller, requiring PCB layout verification to confirm clearance compatibility, though lead spacing remains identical at 5.00mm.

Q: Does the operating temperature range difference affect substitution?

A: The DSF100J333 operates -40°C ~ 85°C. Both substitutes extend this range to -55°C ~ 125°C (185333J100RCA-F) or -55°C ~ 105°C (R82EC2330AA50J). Extended temperature ranges provide superior performance margin and are fully compatible with the original specification. No derating is required.

Q: What is the significance of AEC-Q200 qualification on the R82EC2330AA50J?

A: AEC-Q200 is an automotive industry standard qualification indicating the component has undergone enhanced reliability testing, process controls, and traceability requirements. This qualification is relevant only for automotive applications. For general-purpose applications, this certification provides no functional advantage but confirms manufacturing rigor.

Q: How do packaging options affect component selection?

A: The 185333J100RCA-F is supplied in Tape & Reel (TR) format, optimized for automated pick-and-place assembly. The R82EC2330AA50J is supplied in Bulk format, suitable for manual assembly or custom packaging. Selection depends on assembly process requirements. Both formats contain identical electrical components.

Q: Are there any compliance or regulatory differences between the three parts?

A: All three parts are ROHS3 compliant and REACH unaffected. No regulatory differences exist. All carry EAR99 ECCN classification. Compliance status is equivalent across all options.

Q: Can the DSF100J333 be used interchangeably with the substitutes in existing designs?

A: Yes, for new production or repair applications. The identical electrical specifications (0.033 µF, ±5%, 100V DC) and mechanical compatibility (radial through-hole, 5.00mm spacing) ensure functional interchangeability. Physical dimension reduction in substitutes requires PCB layout verification to confirm clearance, but no circuit redesign is necessary.