ECQ-E4105KZ Equivalent & Substitute Parts

Part Overview

The ECQ-E4105KZ is a 1 µF film capacitor rated for 400V DC operation, manufactured by Panasonic Electronic Components in the ECQ-E series. This polyester metallized radial capacitor is designed for DC link, DC filtering, high frequency switching, and high pulse DV/DT applications. The product is currently obsolete, making identification of suitable substitute components necessary for ongoing system maintenance, repair, and redesign efforts.

Substiute Parts

ECQ-E4105KZ

Panasonic Electronic ComponentsIn Stock: 696ECQ-E4105KZ Datasheet

Current PartRFQ

ECQ-E6105KF

Panasonic Electronic ComponentsIn Stock: 23305ECQ-E6105KF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ECQ-E4105KZ is determined by the following critical parameters:

• Capacitance Value: Must be 1 µF
• Tolerance: Must be ±10%
• Dielectric Type: Must be Polyester, Metallized
• Mounting Configuration: Must be Through Hole Radial with PC Pin termination
• Voltage Rating: Substitute must meet or exceed 400V DC minimum requirement
• Operating Temperature: Substitute must support the required thermal range

The ECQ-E6105KF qualifies as a direct substitute based on matching capacitance, tolerance, dielectric material, mounting type, and termination. The substitute provides enhanced voltage rating (630V DC) and extended operating temperature range (-40°C ~ 105°C), making it suitable for the original application while offering improved performance margins.

Parameter Comparison

Engineering Selection Recommendations

The ECQ-E6105KF is the qualified substitute for the ECQ-E4105KZ based on the following engineering criteria:

Electrical Compatibility: Both components share identical capacitance (1 µF) and tolerance (±10%), with matching polyester metallized dielectric construction. The substitute's 630V DC rating exceeds the original 400V requirement, providing additional voltage margin for the application.

Thermal Performance: The ECQ-E6105KF extends the upper operating temperature limit from 85°C to 105°C, supporting broader thermal operating conditions while maintaining the -40°C lower limit.

Mechanical Fit: Both components are radial through-hole packages with PC pin termination. Lead spacing differs by 0.079" (2.00mm), requiring PCB layout verification prior to implementation.

Product Availability: The ECQ-E6105KF is active production status with 23,233 units in stock, ensuring supply continuity compared to the obsolete ECQ-E4105KZ.

Compliance: The ECQ-E6105KF is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the ECQ-E6105KF be used as a direct replacement for the ECQ-E4105KZ?

A: Yes, the ECQ-E6105KF is electrically and functionally compatible. Both components have identical capacitance (1 µF), tolerance (±10%), and dielectric material (polyester metallized). The substitute's higher voltage rating (630V vs. 400V) and extended temperature range (-40°C to 105°C vs. -40°C to 85°C) make it suitable for the original application. Lead spacing differs by 2.00mm, requiring PCB layout confirmation.

Q: What is the lead spacing difference between these parts?

A: The ECQ-E4105KZ has 1.004" (25.50mm) lead spacing, while the ECQ-E6105KF has 1.083" (27.50mm) lead spacing. This 0.079" (2.00mm) difference must be accommodated in the PCB design or through mechanical adaptation.

Q: Are there any compliance or certification differences?

A: The ECQ-E6105KF provides ROHS3 compliance and REACH unaffected status, meeting modern regulatory standards. The ECQ-E4105KZ, being obsolete, does not carry these current certifications.

Q: Why is the substitute rated for higher voltage?

A: The ECQ-E6105KF is designed for 630V DC operation compared to the original 400V rating. This higher voltage rating does not affect circuit operation at 400V and provides additional safety margin and component longevity in the application.

Q: What packaging format is the substitute available in?

A: The ECQ-E6105KF is supplied in bulk packaging, compared to the original part's standard packaging designation.