ECQ-E6124KZ Equivalent & Substitute Parts

Part Overview

The ECQ-E6124KZ is a 0.12 µF film capacitor rated for 630V DC operation with polyester metallized dielectric construction. Manufactured by Panasonic Electronic Components, this radial through-hole component is designed for general-purpose applications requiring stable capacitance and high voltage tolerance. The part is currently obsolete, making identification of compatible substitutes essential for ongoing system maintenance and new design implementations where this specification remains applicable.

Substiute Parts

ECQ-E6124KZ

Panasonic Electronic ComponentsIn Stock: 724ECQ-E6124KZ Datasheet

Current PartRFQ

ECQ-E6124KF

Panasonic Electronic ComponentsIn Stock: 1607ECQ-E6124KF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ECQ-E6124KZ is determined by the following critical parameters:

• Capacitance Value: Must be 0.12 µF (exact match required)
• Tolerance: Must be ±10% (exact match required)
• Voltage Rating - DC: Must be 630V or higher (equal or greater acceptable)
• Dielectric Material: Must be Polyester, Metallized (exact match required)
• Mounting Type: Must be Through Hole (exact match required)
• Package / Case: Must be Radial (exact match required)
• Termination: Must be PC Pins (exact match required)

The ECQ-E6124KF meets all substitution criteria. While it features a smaller physical footprint and extended operating temperature range, these differences do not affect functional equivalence for the specified electrical parameters.

Parameter Comparison

Engineering Selection Recommendations

The ECQ-E6124KF is a direct functional equivalent to the ECQ-E6124KZ for applications requiring 0.12 µF capacitance at 630V DC with polyester metallized dielectric. The substitute part maintains identical electrical specifications while offering the following advantages:

• Active Product Status: The ECQ-E6124KF is currently in active production, ensuring long-term availability and supply chain reliability compared to the obsolete ECQ-E6124KZ.
• RoHS3 Compliance: The substitute meets ROHS3 compliance requirements, whereas the original part is non-compliant. This is significant for applications subject to environmental regulations.
• Extended Operating Temperature: The upper operating temperature limit extends to 105°C, providing additional thermal margin in high-temperature environments.
• Compact Footprint: The reduced physical dimensions and lead spacing allow for denser PCB layouts without compromising electrical performance.

Selection of the ECQ-E6124KF is appropriate for new designs and replacement applications where the specified electrical parameters are required and PCB layout accommodates the smaller form factor.

Frequently Asked Questions (FAQ)

Q: Can the ECQ-E6124KF be used as a direct replacement for the ECQ-E6124KZ on existing PCBs?

A: Electrical substitution is valid. However, the ECQ-E6124KF has different physical dimensions and lead spacing (18.50mm x 6.30mm with 15.00mm lead spacing versus 24.00mm x 7.50mm with 20.50mm lead spacing). PCB layout verification is required to confirm that the smaller footprint is compatible with existing pad patterns and clearances.

Q: What is the significance of the RoHS compliance difference?

A: The ECQ-E6124KZ is RoHS non-compliant, while the ECQ-E6124KF is ROHS3 compliant. For applications subject to RoHS directives or customer requirements mandating compliance, the ECQ-E6124KF is the appropriate selection.

Q: Are there any voltage derating considerations when substituting these parts?

A: Both parts are rated for 630V DC. The ECQ-E6124KF additionally specifies 250V AC rating. No derating is required for DC applications within the 630V specification.

Q: How does the extended operating temperature range of the ECQ-E6124KF affect substitution suitability?

A: The ECQ-E6124KF operates from -40°C to 105°C, compared to -40°C to 85°C for the ECQ-E6124KZ. This extended range provides additional thermal margin and does not restrict substitution in applications operating within the original part's temperature limits.

Q: What should be verified before implementing the ECQ-E6124KF as a substitute?

A: Verify PCB layout compatibility with the reduced lead spacing (15.00mm versus 20.50mm) and physical dimensions. Confirm that the smaller form factor does not create clearance issues with adjacent components or board features.