ECQ-E4684KZ Equivalent & Substitute Parts

Part Overview

The ECQ-E4684KZ is a 0.68 µF film capacitor manufactured by Panasonic Electronic Components, rated for 400V DC operation with polyester metallized dielectric construction. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing system maintenance and new design implementations. The radial through-hole configuration and ±10% tolerance specification define its functional role in general-purpose applications requiring stable capacitance performance across the -40°C to 85°C operating temperature range.

Substiute Parts

ECQ-E4684KZ

Panasonic Electronic ComponentsIn Stock: 981ECQ-E4684KZ Datasheet

Current PartRFQ

ECQ-E6684KF

Panasonic Electronic ComponentsIn Stock: 1666ECQ-E6684KF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ECQ-E4684KZ is determined by strict equivalence in the following parameters:

• Capacitance Value: 0.68 µF (exact match required)
• Tolerance: ±10% (exact match required)
• Dielectric Material: Polyester, Metallized (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: Radial (exact match required)
• Termination: PC Pins (exact match required)

The ECQ-E6684KF qualifies as a substitute part because it maintains identical capacitance, tolerance, dielectric material, mounting type, package configuration, and termination style. The substitute part features an elevated DC voltage rating (630V versus 400V) and extended operating temperature range (-40°C to 105°C versus -40°C to 85°C), both of which represent enhanced performance characteristics suitable for applications originally specified for the ECQ-E4684KZ.

Parameter Comparison

Engineering Selection Recommendations

The ECQ-E6684KF is the qualified substitute for the obsolete ECQ-E4684KZ based on functional equivalence across all critical electrical and mechanical parameters. The substitute part is currently in active production status, ensuring long-term availability and supply chain continuity.

The ECQ-E6684KF carries ROHS3 compliance and REACH unaffected status, meeting modern regulatory requirements for electronic component procurement. The elevated DC voltage rating and extended operating temperature range of the substitute part provide enhanced performance margins relative to the original specification.

Physical dimensions differ between the main part and substitute: the ECQ-E6684KF is shorter in length (26.00mm versus 29.00mm) and lead spacing (22.50mm versus 25.50mm), while seated height is greater (22.00mm versus 19.50mm). These dimensional variations require verification against printed circuit board layout constraints prior to implementation.

Frequently Asked Questions (FAQ)

Q: Can the ECQ-E6684KF directly replace the ECQ-E4684KZ in all applications?

A: The ECQ-E6684KF is electrically equivalent for applications originally specified for the ECQ-E4684KZ. However, physical dimensions differ, requiring PCB layout verification. The substitute part's higher voltage rating and extended temperature range are compatible with the original specification envelope.

Q: What are the key differences between these two parts?

A: The primary differences are product status (obsolete versus active), DC voltage rating (400V versus 630V), operating temperature range (-40°C to 85°C versus -40°C to 105°C), physical dimensions, and regulatory compliance certifications. Capacitance, tolerance, dielectric material, mounting type, and termination are identical.

Q: Are there dimensional compatibility concerns?

A: Yes. The ECQ-E6684KF has different length (26.00mm versus 29.00mm), height (22.00mm versus 19.50mm), and lead spacing (22.50mm versus 25.50mm). PCB footprint and component placement must be evaluated before substitution.

Q: Does the substitute part meet current regulatory standards?

A: The ECQ-E6684KF is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement and use.

Q: Why is the ECQ-E4684KZ listed as obsolete?

A: The ECQ-E4684KZ is classified as obsolete by the manufacturer. The ECQ-E6684KF represents the active production equivalent within the Panasonic ECQ-E series, ensuring continued availability and support.