WMF6P33K Film Capacitor Equivalent & Substitute Parts

Part Overview

The WMF6P33K is a 0.33 µF film capacitor rated for 630V DC operation with polyester dielectric material, manufactured by Cornell Dubilier Electronics (CDE). This component is designed for general-purpose applications requiring through-hole axial mounting. The WMF6P33K is classified as obsolete, which necessitates identification of active equivalent parts to maintain design continuity and ensure long-term component availability for production and repair applications.

Substiute Parts

WMF6P33K

Cornell Dubilier Electronics (CDE)In Stock: 828WMF6P33K Datasheet

Current PartRFQ

WMF6P33K-F

Cornell Dubilier Electronics (CDE)In Stock: 1208WMF6P33K-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the WMF6P33K is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Capacitance value: 0.33 µF (exact match required)
• Tolerance: ±10% (exact match required)
• Voltage rating: 630V DC minimum (equal or higher acceptable)
• Dielectric material: Polyester (exact match required)
• Operating temperature range: -55°C to 125°C (equal or wider range acceptable)

Mechanical Equivalence Criteria:

• Mounting type: Through Hole (exact match required)
• Package configuration: Axial (exact match required)
• Physical dimensions: 0.748" Dia × 2.000" L (exact match required)
• Termination style: PC Pins (exact match required)

The WMF6P33K-F meets all substitution criteria as a direct equivalent part within the same WMF series from Cornell Dubilier Electronics.

Parameter Comparison

Engineering Selection Recommendations

The WMF6P33K-F is the direct active equivalent for the obsolete WMF6P33K. Selection of the WMF6P33K-F is based on the following factors:

Product Status: The WMF6P33K-F maintains active production status, ensuring continued component availability and supply chain reliability compared to the obsolete WMF6P33K.

Regulatory Compliance: The WMF6P33K-F achieves ROHS3 compliance, whereas the WMF6P33K is non-compliant. For applications subject to RoHS regulations or customer requirements mandating RoHS-compliant components, the WMF6P33K-F is the appropriate selection.

Electrical and Mechanical Equivalence: The WMF6P33K-F maintains identical electrical specifications (0.33 µF, ±10%, 630V DC, polyester dielectric, -55°C to 125°C operating range) and mechanical configuration (through-hole axial, 19.00mm × 50.80mm dimensions, PC pin termination), ensuring direct functional substitution without circuit redesign.

Export Classification: Both parts share identical ECCN (EAR99) and HTSUS (8532.25.0060) classifications, maintaining consistent regulatory treatment for international trade.

Frequently Asked Questions (FAQ)

Q: Can the WMF6P33K-F be used as a direct replacement for the WMF6P33K in existing designs?

A: Yes. The WMF6P33K-F is electrically and mechanically equivalent to the WMF6P33K across all specified parameters: capacitance (0.33 µF), tolerance (±10%), voltage rating (630V DC), dielectric material (polyester), operating temperature range (-55°C to 125°C), mounting type (through-hole axial), and physical dimensions (19.00mm × 50.80mm). Direct substitution is supported without circuit modification.

Q: What is the primary difference between the WMF6P33K and WMF6P33K-F?

A: The WMF6P33K is classified as obsolete with non-compliant RoHS status, while the WMF6P33K-F is an active production part with ROHS3 compliance. All electrical and mechanical specifications remain identical between the two parts.

Q: Are there any physical dimension differences between these parts?

A: No. Both the WMF6P33K and WMF6P33K-F share identical physical dimensions of 0.748" diameter × 2.000" length (19.00mm × 50.80mm), ensuring compatibility with existing PCB layouts and mechanical assemblies.

Q: Does the RoHS3 compliance of the WMF6P33K-F affect circuit performance?

A: No. RoHS3 compliance relates to material composition and manufacturing processes, not electrical performance. The WMF6P33K-F maintains identical electrical characteristics and operating specifications as the WMF6P33K.

Q: What is the lead spacing specification for these axial capacitors?

A: Lead spacing information is not provided in the component specifications. Physical dimensions are specified as 0.748" diameter × 2.000" length (19.00mm × 50.80mm) for the axial package configuration.

Q: Are both parts classified under the same export control regulations?

A: Yes. Both the WMF6P33K and WMF6P33K-F share identical ECCN classification (EAR99) and HTSUS code (8532.25.0060), maintaining consistent regulatory treatment for export and trade purposes.