ECQ-E4183KZ Equivalent & Substitute Parts

Part Overview

The ECQ-E4183KZ is a 0.018 µF film capacitor rated for 400V DC operation with polyester metallized dielectric construction. Manufactured by Panasonic Electronic Components, this radial through-hole component is designed for DC link, DC filtering, high frequency switching, and high pulse DV/DT applications. The part is currently obsolete, making identification of compatible substitutes essential for ongoing system support and maintenance.

Substiute Parts

ECQ-E4183KZ

Panasonic Electronic ComponentsIn Stock: 1042ECQ-E4183KZ Datasheet

Current PartRFQ

ECQ-E6183KF

Panasonic Electronic ComponentsIn Stock: 1915ECQ-E6183KF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ECQ-E4183KZ is determined by the following critical parameters:

• Capacitance Value: Must be 0.018 µF (±10% tolerance acceptable)
• Dielectric Material: Polyester, Metallized construction required
• Mounting Type: Through-hole radial configuration mandatory
• Voltage Rating: Substitute must meet or exceed 400V DC minimum
• Termination Style: PC pins required for PCB compatibility
• Package Compatibility: Physical dimensions and lead spacing must accommodate existing PCB layouts

The ECQ-E6183KF qualifies as a substitute because it maintains identical capacitance and tolerance specifications, uses the same dielectric material and mounting technology, and provides a higher voltage rating (630V DC) with compatible radial through-hole termination.

Parameter Comparison

Engineering Selection Recommendations

The ECQ-E6183KF is a direct functional substitute for the ECQ-E4183KZ based on the following engineering criteria:

Electrical Compatibility: Both components share identical capacitance (0.018 µF) and tolerance (±10%). The ECQ-E6183KF provides superior voltage headroom at 630V DC versus the original 400V rating, making it suitable for the same circuit applications with enhanced reliability margin.

Thermal Performance: The substitute operates across an extended temperature range (-40°C ~ 105°C) compared to the original (-40°C ~ 85°C), providing broader operational flexibility.

Physical Considerations: The ECQ-E6183KF exhibits slightly reduced length (12.00mm vs 14.60mm) and width (4.90mm vs 5.00mm), with marginally reduced lead spacing (10.00mm vs 10.50mm). These dimensional differences are minor and typically accommodate standard PCB layouts designed for radial film capacitors in this class.

Compliance and Availability: The ECQ-E6183KF is active product status with RoHS3 compliance and REACH unaffected designation, ensuring long-term supply chain viability and regulatory alignment.

Frequently Asked Questions (FAQ)

Q: Can the ECQ-E6183KF directly replace the ECQ-E4183KZ on existing PCBs?

A: Yes, with minor physical considerations. Both components are radial through-hole film capacitors with PC pin termination. The substitute has slightly different dimensions and lead spacing, but these differences are within typical PCB design tolerances for this component class. Verify lead spacing compatibility (10.00mm vs 10.50mm) with your specific PCB layout before assembly.

Q: Why does the substitute have a higher voltage rating?

A: The ECQ-E6183KF is rated for 630V DC compared to the original 400V DC. Higher voltage rating does not negatively impact circuit performance; it provides additional safety margin and reliability in the same application. The capacitance and tolerance remain identical.

Q: Are there any temperature range differences to consider?

A: The substitute operates to 105°C maximum versus 85°C for the original part. This extended range is advantageous and poses no compatibility issues for applications within the original temperature specification.

Q: What is the significance of the AC voltage rating on the substitute?

A: The ECQ-E6183KF includes an AC voltage rating of 250V, which the original part does not specify. This additional rating does not affect DC-only applications but provides flexibility for mixed AC/DC circuit environments.

Q: Are there compliance or supply chain advantages to using the substitute?

A: Yes. The ECQ-E6183KF is active product status with documented RoHS3 compliance and REACH unaffected status, ensuring regulatory alignment and long-term availability. The original ECQ-E4183KZ is obsolete, making the substitute the preferred choice for new designs and ongoing support.