ECQ-E6333KZ Film Capacitor Equivalent & Substitute Parts

Part Overview

The ECQ-E6333KZ is a 0.033 µF film capacitor rated for 630V DC operation with polyester metallized dielectric construction. Manufactured by Panasonic Electronic Components as part of the ECQ-E(K) series, this component is classified as obsolete. Due to its discontinued status, identifying functionally equivalent substitute parts is essential for ongoing system maintenance, repair, and new design implementations where this capacitance and voltage rating are required.

Substiute Parts

ECQ-E6333KZ

Panasonic Electronic ComponentsIn Stock: 1034ECQ-E6333KZ Datasheet

Current PartRFQ

ECQ-E6333KF

Panasonic Electronic ComponentsIn Stock: 5864ECQ-E6333KF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ECQ-E6333KZ is determined by the following critical parameters:

• Capacitance Value: Must be 0.033 µF (no tolerance deviation acceptable for direct substitution)
• Voltage Rating - DC: Must be 630V or higher
• Dielectric Material: Polyester, Metallized (maintains electrical performance characteristics)
• Tolerance: ±10% (standard tolerance class for this application)
• Mounting Type: Through Hole with radial configuration
• Termination Style: PC Pins (compatible with PCB hole patterns)

The ECQ-E6333KF meets all these criteria and is therefore a valid substitute for the obsolete ECQ-E6333KZ.

Parameter Comparison

Engineering Selection Recommendations

The ECQ-E6333KF is the recommended substitute for the obsolete ECQ-E6333KZ based on the following factors:

• Electrical Equivalence: Both parts share identical capacitance (0.033 µF), tolerance (±10%), and DC voltage rating (630V), ensuring functional compatibility in circuit applications.
• Product Status: The ECQ-E6333KF is active and in production, providing long-term availability and supply chain reliability compared to the discontinued ECQ-E6333KZ.
• Regulatory Compliance: The ECQ-E6333KF is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards, whereas the ECQ-E6333KZ is RoHS non-compliant.
• Enhanced Operating Temperature: The ECQ-E6333KF supports an extended temperature range (-40°C ~ 105°C) compared to the ECQ-E6333KZ (-40°C ~ 85°C), providing greater thermal margin in applications.
• Physical Compatibility: Both parts use radial through-hole mounting with PC pin termination. However, the ECQ-E6333KF has different physical dimensions and lead spacing, requiring PCB layout verification before implementation.

Frequently Asked Questions (FAQ)

Q: Can the ECQ-E6333KF be used as a direct replacement for the ECQ-E6333KZ without PCB modification?

A: Electrical substitution is valid. However, physical substitution requires PCB layout verification. The ECQ-E6333KF has different dimensions (12.00mm x 6.00mm vs. 16.50mm x 5.50mm) and lead spacing (10.00mm vs. 14.60mm). PCB hole patterns must be checked for compatibility before installation.

Q: What are the critical parameters that must match for substitution?

A: Capacitance value (0.033 µF), DC voltage rating (630V minimum), dielectric material (polyester metallized), tolerance (±10%), and mounting type (through-hole radial) must remain constant. Variations in these parameters invalidate substitution.

Q: Does the ECQ-E6333KF's higher operating temperature range affect circuit performance?

A: The extended temperature range (-40°C ~ 105°C) of the ECQ-E6333KF provides additional thermal margin and does not negatively impact performance. It is suitable for applications requiring broader temperature operation.

Q: Is the ECQ-E6333KF RoHS compliant?

A: Yes, the ECQ-E6333KF is ROHS3 compliant, whereas the ECQ-E6333KZ is RoHS non-compliant. This makes the ECQ-E6333KF suitable for applications subject to RoHS regulations.

Q: What is the lead spacing difference, and why does it matter?

A: The ECQ-E6333KZ has 14.60mm lead spacing, while the ECQ-E6333KF has 10.00mm lead spacing. This difference affects PCB hole pattern compatibility and requires physical verification before board-level substitution.