PVC623 Film Capacitor Equivalent & Substitute Parts

Part Overview

The PVC623 is a 3000 pF polyester film capacitor manufactured by Cornell Dubilier Electronics (CDE), rated for 600V DC operation with ±10% tolerance. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing maintenance and repair applications. The radial through-hole configuration and general-purpose design make it suitable for legacy electronic equipment requiring film capacitor technology.

Substiute Parts

PVC623

Cornell Dubilier Electronics (CDE)In Stock: 906PVC623 Datasheet

Current PartRFQ

FK26X7R2J333KN000

TDK CorporationIn Stock: 28091FK26X7R2J333KN000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PVC623 is constrained by the following critical parameters:

Capacitance Value: The substitute must provide 3000 pF (0.003 µF) capacitance. The provided substitute FK26X7R2J333KN000 specifies 0.033 µF (33000 pF), which represents a 10-fold difference in capacitance value. This part does not meet the capacitance requirement for direct substitution.

Voltage Rating: The PVC623 operates at 600V DC. The FK26X7R2J333KN000 is rated for 630V, which exceeds the original specification and is acceptable from a voltage margin perspective.

Tolerance: Both parts specify ±10% tolerance, meeting this requirement.

Operating Temperature: Both parts operate across -55°C to 125°C, satisfying thermal requirements.

Mounting and Package: Both are radial through-hole components, compatible with PCB layouts designed for the original part.

Compliance: Both parts are ROHS3 compliant and REACH unaffected.

The FK26X7R2J333KN000 cannot serve as a direct functional equivalent due to the capacitance value mismatch. A true substitute for the PVC623 would require a 3000 pF (0.003 µF) rated component.

Parameter Comparison

Engineering Selection Recommendations

The FK26X7R2J333KN000 is not suitable as a direct substitute for the PVC623 due to a fundamental capacitance value mismatch (0.033 µF versus 3000 pF). While both components share compatible mounting configurations, voltage ratings, temperature ranges, and compliance certifications, the 10-fold capacitance difference makes this substitution functionally incompatible with circuit designs specified for 3000 pF operation.

For applications requiring the PVC623, sourcing alternatives should prioritize:

1. Film capacitors with 3000 pF (0.003 µF) capacitance rating
2. Voltage rating of 600V DC or higher
3. ±10% tolerance specification
4. Radial through-hole package configuration
5. Operating temperature range of -55°C to 125°C minimum

Both the PVC623 and FK26X7R2J333KN000 carry obsolescence or restricted design status, indicating limited availability through standard distribution channels.

Frequently Asked Questions (FAQ)

Q: Can the FK26X7R2J333KN000 replace the PVC623 in my circuit?

A: No. The FK26X7R2J333KN000 has a capacitance value of 0.033 µF, while the PVC623 is rated for 3000 pF. These values differ by a factor of 10 and are not interchangeable. Using an incorrect capacitance value will alter circuit performance, frequency response, and filtering characteristics.

Q: What is the capacitance difference between these parts?

A: The PVC623 is 3000 pF (0.003 µF). The FK26X7R2J333KN000 is 0.033 µF (33000 pF). The substitute part has 11 times the capacitance of the original.

Q: Are both parts through-hole radial components?

A: Yes. Both the PVC623 and FK26X7R2J333KN000 use radial through-hole mounting with formed leads, making them physically compatible with PCB layouts designed for radial capacitors.

Q: What is the voltage rating difference?

A: The PVC623 is rated for 600V DC. The FK26X7R2J333KN000 is rated for 630V. The substitute exceeds the original voltage specification by 30V, which is acceptable from a derating perspective.

Q: Why is the PVC623 listed as obsolete?

A: The PVC623 is an older film capacitor design from Cornell Dubilier Electronics. Obsolescence reflects discontinuation of manufacturing and limited availability through standard component distributors.

Q: What dielectric materials are used in each part?

A: The PVC623 uses polyester film dielectric. The FK26X7R2J333KN000 uses ceramic X7R dielectric. These materials have different electrical and thermal characteristics, making them unsuitable for direct substitution beyond voltage and temperature ratings.

Q: Can I use a higher voltage rated capacitor as a substitute?

A: Higher voltage ratings are generally acceptable from a safety and derating perspective. However, this does not address the capacitance value mismatch between these specific parts.

Q: What should I do if I need to replace a PVC623?

A: Identify a film capacitor with 3000 pF capacitance, ±10% tolerance, 600V or higher DC rating, and radial through-hole package. The FK26X7R2J333KN000 does not meet the capacitance requirement and cannot be used as a substitute.