MPXQP33K Film Capacitor Equivalent & Substitute Parts

Part Overview

The MPXQP33K is a 0.33 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE) with a 275V AC rating, designed for EMI and RFI suppression applications. This component features a metallized polypropylene dielectric in a radial through-hole package configuration. The product is classified as obsolete, necessitating identification of active equivalent and substitute parts to maintain design continuity and ensure supply chain availability for new production and field replacements.

Substiute Parts

MPXQP33K

Cornell Dubilier Electronics (CDE)In Stock: 963MPXQP33K Datasheet

Current PartRFQ

PHE840MD6220KD13R06L2

KEMETIn Stock: 3057PHE840MD6220KD13R06L2 Datasheet

SimilarRFQ

R463N333000N0K

KEMETIn Stock: 2309R463N333000N0K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MPXQP33K is determined by the following critical parameters:

Primary Substitution Criteria:

• Capacitance value: 0.33 µF (exact match required)
• Tolerance: ±10% (matching tolerance class)
• Voltage Rating - AC: Minimum 275V (equal or higher acceptable)
• Dielectric Material: Polypropylene (PP), Metallized (required for application compatibility)
• Mounting Type: Through Hole (required for PCB compatibility)
• Package / Case: Radial (required for mechanical fit)
• Lead Spacing: 0.886" (22.50mm) (required for PCB hole pattern compatibility)
• Termination: PC Pins (required for soldering compatibility)
• Applications: EMI, RFI Suppression (functional requirement)
• Ratings: X2 (required for safety and regulatory compliance)

Secondary Compatibility Factors:

• Operating Temperature Range: Minimum -40°C ~ 100°C (equal or wider range acceptable)
• RoHS Status: ROHS3 Compliant (regulatory requirement)

The R463N333000N0K from KEMET meets all primary substitution criteria with identical capacitance, tolerance, lead spacing, and package configuration. The PHE840MD6220KD13R06L2 represents a partial substitute with different capacitance value (0.22 µF) and is listed as an alternative only when capacitance adjustment is acceptable in the circuit design.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: R463N333000N0K (KEMET)

The R463N333000N0K is the direct equivalent for the MPXQP33K. This part maintains identical capacitance (0.33 µF), tolerance (±10%), lead spacing (22.50mm), and package configuration. The R463N333000N0K provides enhanced voltage ratings (310V AC / 630V DC versus 275V AC for the original), extended operating temperature range (-40°C ~ 110°C versus -40°C ~ 100°C), and active product status ensuring long-term availability. Both components are ROHS3 compliant and rated for X2 applications. The mechanical dimensions are compatible with existing PCB layouts designed for the MPXQP33K.

Alternative Substitute: PHE840MD6220KD13R06L2 (KEMET)

The PHE840MD6220KD13R06L2 is a partial substitute applicable only when circuit design permits capacitance adjustment. This part differs in capacitance value (0.22 µF versus 0.33 µF) but maintains identical lead spacing, package type, and X2 rating. The PHE840MD6220KD13R06L2 offers superior voltage ratings (275V AC / 760V DC) and wider operating temperature range (-55°C ~ 105°C). Selection of this part requires circuit analysis to confirm that the reduced capacitance value does not compromise EMI/RFI suppression performance or other functional requirements.

Compliance and Availability:

Both substitute parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The R463N333000N0K is the recommended primary choice due to direct parameter equivalence and active product status with confirmed inventory availability (2254 pcs).

Frequently Asked Questions (FAQ)

Q: Can the R463N333000N0K directly replace the MPXQP33K without PCB modification?

A: Yes. The R463N333000N0K maintains identical lead spacing (0.886" / 22.50mm), radial package configuration, and PC pin termination. No PCB layout changes are required. The component will fit existing through-hole positions designed for the MPXQP33K.

Q: What is the significance of the higher voltage ratings on the R463N333000N0K?

A: The R463N333000N0K provides 310V AC and 630V DC ratings compared to the MPXQP33K's 275V AC rating. Higher voltage ratings provide additional safety margin and do not negatively impact circuit performance. The component will operate safely in applications designed for 275V AC operation.

Q: Why is the PHE840MD6220KD13R06L2 listed as an alternative if the capacitance differs?

A: The PHE840MD6220KD13R06L2 is included as an alternative option for designs where capacitance adjustment is acceptable. The 0.22 µF value represents approximately 67% of the original 0.33 µF specification. Circuit analysis is required to determine if this reduction maintains adequate EMI/RFI suppression performance. This part is not a direct drop-in replacement.

Q: Are there mechanical dimension differences between the substitute parts?

A: Yes. The R463N333000N0K has dimensions of 1.043" L x 0.236" W with 0.594" maximum seated height. The MPXQP33K has dimensions of 1.043" L x 0.335" W with 0.689" maximum seated height. The R463N333000N0K is narrower and shorter, which may provide additional PCB clearance but will still fit existing through-hole positions. The PHE840MD6220KD13R06L2 has dimensions of 1.024" L x 0.256" W with 0.571" maximum seated height, also compatible with MPXQP33K hole patterns.

Q: What is the difference between AC and DC voltage ratings?

A: AC voltage ratings apply to alternating current applications (such as EMI/RFI suppression in AC power circuits). DC voltage ratings apply to direct current applications. The MPXQP33K specifies 275V AC for its intended EMI/RFI suppression function. The substitute parts provide both AC and DC ratings, offering flexibility for different application requirements.

Q: Are all three parts RoHS compliant?

A: Yes. The MPXQP33K, R463N333000N0K, and PHE840MD6220KD13R06L2 are all ROHS3 compliant, meeting current environmental and regulatory requirements for electronic components.

Q: What does the X2 rating indicate?

A: The X2 rating is a safety classification for capacitors used in AC mains applications. All three parts carry this rating, confirming suitability for EMI/RFI suppression in power supply circuits and similar high-voltage AC applications.

Q: How do the operating temperature ranges compare?

A: The MPXQP33K operates from -40°C to 100°C. The R463N333000N0K extends this to -40°C to 110°C. The PHE840MD6220KD13R06L2 provides the widest range at -55°C to 105°C. All ranges are suitable for standard industrial and commercial applications. Selection depends on specific thermal environment requirements.