DPM4P33K Film Capacitor Equivalent & Substitute Parts

Part Overview

The DPM4P33K is a 0.33 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE) with a 400V DC voltage rating and polypropylene dielectric. This radial through-hole component is designed for DC link, DC filtering, and high-frequency switching applications. The part is currently listed as obsolete, making identification of equivalent and substitute components necessary for ongoing system support and new design implementations.

Substiute Parts

DPM4P33K

Cornell Dubilier Electronics (CDE)In Stock: 885DPM4P33K Datasheet

Current PartRFQ

DPM4P33K-F

Cornell Dubilier Electronics (CDE)In Stock: 873DPM4P33K-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DPM4P33K is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Capacitance value: 0.33 µF
• Tolerance: ±10%
• Voltage rating: 400V DC / 220V AC minimum
• Dielectric material: Polypropylene (PP), Metallized

Mechanical Parameters:

• Mounting type: Through Hole
• Package configuration: Radial
• Lead spacing: 0.886" (22.50mm)
• Physical dimensions: 1.024" L x 0.433" W (26.00mm x 11.00mm)
• Height seated (max): 0.827" (21.00mm)
• Termination: PC Pins

Performance Characteristics:

• Operating temperature range: -55°C ~ 105°C
• Features: Low ESR, Low ESL

Substitute parts must match all electrical and mechanical parameters without deviation. No parameter relaxation or uprating is applied in this substitution analysis.

Parameter Comparison

Engineering Selection Recommendations

The DPM4P33K-F is a direct substitute for the obsolete DPM4P33K. Both components are manufactured by Cornell Dubilier Electronics within the DPM series and share identical electrical and mechanical specifications.

Key Differentiation:

The primary distinction between the main part and substitute is product status and regulatory compliance. The DPM4P33K is obsolete, while the DPM4P33K-F maintains active production status. The DPM4P33K-F additionally carries ROHS3 compliance, whereas the original DPM4P33K is RoHS non-compliant. Both components maintain REACH Unaffected status and share identical ECCN and HTSUS classifications.

For applications requiring RoHS3 compliance or where component availability is critical, the DPM4P33K-F is the appropriate selection. The electrical and mechanical equivalence ensures direct board-level compatibility without design modification.

Frequently Asked Questions (FAQ)

Q: Can the DPM4P33K-F be used as a direct replacement for the DPM4P33K?

A: Yes. The DPM4P33K-F is electrically and mechanically equivalent to the DPM4P33K. All critical parameters including capacitance, voltage rating, dielectric material, physical dimensions, lead spacing, and operating temperature range are identical. Direct substitution is possible without circuit modification.

Q: What is the difference between DPM4P33K and DPM4P33K-F?

A: The DPM4P33K-F is the active production variant of the obsolete DPM4P33K. The substitute part carries ROHS3 compliance certification, while the original part is RoHS non-compliant. All electrical and mechanical specifications remain unchanged.

Q: Are there any PCB layout considerations when substituting these parts?

A: No. Both components share identical physical dimensions, lead spacing (0.886" / 22.50mm), and radial through-hole mounting configuration. PCB footprints and hole spacing require no modification.

Q: What applications are these capacitors suitable for?

A: The DPM4P33K and DPM4P33K-F are specified for DC link, DC filtering, high-frequency, and switching applications. The 400V DC rating and low ESR/low ESL characteristics support these use cases.

Q: Is the DPM4P33K still available for purchase?

A: The DPM4P33K is listed as obsolete. The DPM4P33K-F is the active production equivalent and is the recommended selection for new designs and ongoing system support.

Q: Do these capacitors require special handling or storage?

A: Both components carry Moisture Sensitivity Level (MSL) 1, indicating unlimited shelf life without moisture control requirements. Standard component storage practices apply.