ECQ-E6394KZ Equivalent & Substitute Parts

Part Overview

The ECQ-E6394KZ is a 0.39 µF film capacitor rated for 630V DC operation with polyester metallized dielectric construction. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity. The radial through-hole configuration and ±10% tolerance make it suitable for general-purpose applications requiring stable capacitance across the specified operating temperature range of -40°C to 85°C.

Substiute Parts

ECQ-E6394KZ

Panasonic Electronic ComponentsIn Stock: 1052ECQ-E6394KZ Datasheet

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ECQ-E6394KF

Panasonic Electronic ComponentsIn Stock: 977ECQ-E6394KF Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the ECQ-E6394KZ is determined by strict equivalence in the following parameters:

• Capacitance Value: 0.39 µF (exact match required)
• Tolerance: ±10% (maintains circuit performance specifications)
• Voltage Rating - DC: 630V (minimum requirement for circuit safety)
• Dielectric Material: Polyester, Metallized (electrical and thermal characteristics)
• Mounting Type: Through Hole (PCB assembly compatibility)
• Package / Case: Radial (physical form factor)
• Termination: PC Pins (solder connection method)

The ECQ-E6394KF qualifies as a direct substitute based on these core parameters. Secondary variations in physical dimensions, lead spacing, and operating temperature range do not preclude substitution when the primary electrical and mechanical criteria are met.

Parameter Comparison

Engineering Selection Recommendations

The ECQ-E6394KF is the qualified substitute for the obsolete ECQ-E6394KZ. Both components share identical electrical specifications for capacitance, tolerance, and DC voltage rating. The ECQ-E6394KF offers the advantage of active product status, ensuring long-term availability and supply chain continuity.

The ECQ-E6394KF provides ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement. The extended operating temperature range (-40°C to 105°C versus -40°C to 85°C) provides additional thermal margin in applications subject to elevated ambient conditions.

Physical dimensions and lead spacing differ between the two parts. PCB layout verification is required to confirm that the smaller footprint and reduced lead spacing of the ECQ-E6394KF are compatible with existing circuit board designs. In applications where the original dimensions are critical to PCB layout, mechanical compatibility must be confirmed before substitution.

Frequently Asked Questions (FAQ)

Q: Can the ECQ-E6394KF be used as a direct replacement for the ECQ-E6394KZ?

A: Yes, the ECQ-E6394KF qualifies as a direct electrical substitute. Both components have identical capacitance (0.39 µF), tolerance (±10%), and DC voltage rating (630V). Physical dimensions differ, requiring PCB layout verification for mechanical compatibility.

Q: What is the primary reason for substituting the ECQ-E6394KZ?

A: The ECQ-E6394KZ is classified as obsolete. The ECQ-E6394KF is an active product from the same manufacturer, ensuring continued availability and supply chain support.

Q: Are there compliance differences between these parts?

A: The ECQ-E6394KF is ROHS3 compliant and REACH unaffected. Compliance status for the ECQ-E6394KZ is not specified. For applications subject to regulatory compliance requirements, the ECQ-E6394KF is the appropriate selection.

Q: How do the physical dimensions affect substitution?

A: The ECQ-E6394KF is smaller (26.00mm x 8.50mm versus 29.00mm x 11.50mm) with reduced lead spacing (22.50mm versus 25.50mm). PCB layout must be verified to confirm that the substitute component fits within the available space and that lead spacing matches the circuit board hole pattern.

Q: What is the operating temperature difference?

A: The ECQ-E6394KF operates across -40°C to 105°C, compared to -40°C to 85°C for the ECQ-E6394KZ. This extended range provides additional thermal margin but does not affect substitution suitability for applications within the original temperature specification.

Q: Does the ECQ-E6394KF have an AC voltage rating?

A: Yes, the ECQ-E6394KF is rated for 250V AC. The ECQ-E6394KZ does not specify an AC rating. For DC-only applications, this difference is not relevant to component selection.