ECQ-M4683KZ Equivalent & Substitute Parts

Part Overview

The ECQ-M4683KZ is a 0.068 µF film capacitor rated for 400V DC operation with polyester dielectric material and radial through-hole mounting. Manufactured by Panasonic Electronic Components under the ECQ-M series, this component is classified as obsolete. Due to its obsolete status, identifying equivalent substitute parts with compatible electrical and mechanical specifications is essential for circuit maintenance, repair, and redesign applications.

Substiute Parts

ECQ-M4683KZ

Panasonic Electronic ComponentsIn Stock: 909ECQ-M4683KZ Datasheet

Current PartRFQ

ECQ-E4683KF

Panasonic Electronic ComponentsIn Stock: 1086ECQ-E4683KF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ECQ-M4683KZ is determined by the following critical parameters:

• Capacitance Value: Must be 0.068 µF to maintain circuit function
• Tolerance: ±10% tolerance ensures compatibility with design specifications
• Voltage Rating - DC: Minimum 400V DC rating required for safe operation
• Dielectric Material: Polyester-based dielectric acceptable
• Mounting Type: Through-hole radial configuration required for PCB compatibility
• Termination: PC pins required for standard through-hole assembly

The ECQ-E4683KF qualifies as a direct substitute based on matching capacitance, tolerance, voltage rating, dielectric material type, mounting configuration, and termination style. The substitute part maintains electrical equivalence while offering improved product status and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The ECQ-E4683KF is the qualified substitute for the obsolete ECQ-M4683KZ based on electrical parameter equivalence. Both components share identical capacitance, tolerance, and DC voltage ratings. The substitute part offers the following advantages:

• Active Product Status: The ECQ-E4683KF is currently in active production, ensuring long-term availability and supply chain reliability
• Enhanced Compliance: ROHS3 compliance and REACH unaffected status meet current regulatory requirements
• Extended Temperature Range: Operating temperature range of -40°C ~ 105°C provides broader thermal performance compared to the original -40°C ~ 85°C specification
• Compact Form Factor: Reduced physical dimensions (12.00mm x 5.40mm versus 23.00mm x 9.00mm) and shorter lead spacing (10.00mm versus 18.00mm) enable space-efficient PCB layouts

Physical dimension differences require PCB layout verification to confirm pad spacing compatibility. The metallized polyester dielectric in the substitute part maintains functional equivalence with the original polyester dielectric specification.

Frequently Asked Questions (FAQ)

Q: Can the ECQ-E4683KF directly replace the ECQ-M4683KZ without circuit modification?

A: Yes, the ECQ-E4683KF provides electrical equivalence with identical capacitance (0.068 µF), tolerance (±10%), and DC voltage rating (400V). PCB layout verification is required due to different lead spacing (10.00mm versus 18.00mm) and physical dimensions.

Q: What is the significance of the metallized polyester dielectric in the substitute part?

A: Both the original and substitute parts use polyester-based dielectric materials. The metallized construction in the ECQ-E4683KF is a manufacturing variation that maintains electrical performance while enabling the compact form factor.

Q: Does the extended operating temperature range of the substitute part affect circuit design?

A: The ECQ-E4683KF operates from -40°C ~ 105°C compared to the original -40°C ~ 85°C. This extended range provides additional thermal margin and does not negatively impact circuit compatibility.

Q: Are there compliance or regulatory differences between the two parts?

A: The ECQ-E4683KF is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards. Compliance status for the obsolete ECQ-M4683KZ is not specified.

Q: What considerations apply to the physical size difference?

A: The substitute part is significantly smaller (12.00mm x 5.40mm versus 23.00mm x 9.00mm) with different lead spacing. PCB footprint and pad spacing must be verified for mechanical compatibility before implementation.

Q: Is the AC voltage rating of the substitute part relevant for DC-only applications?

A: For DC-only circuit applications, the AC voltage rating of 200V on the substitute part is not a limiting factor. The 400V DC rating is the controlling specification for both parts.