ECQ-M4392KZ Equivalent & Substitute Parts

Part Overview

The ECQ-M4392KZ is a 3900 pF film capacitor manufactured by Panasonic Electronic Components, rated for 400V DC operation with polyester dielectric material. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing production, maintenance, and repair applications. The radial through-hole configuration and ±10% tolerance make it suitable for general-purpose filtering and coupling applications in electronic circuits.

Substiute Parts

ECQ-M4392KZ

Panasonic Electronic ComponentsIn Stock: 775ECQ-M4392KZ Datasheet

Current PartRFQ

BFC237051392

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 10373BFC237051392 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ECQ-M4392KZ is based on the following critical parameters:

• Capacitance Value: 3900 pF (exact match required)
• Tolerance: ±10% (acceptable range for general-purpose applications)
• Voltage Rating - DC: 400V minimum (equal or higher ratings are acceptable)
• Dielectric Material: Polyester (maintains electrical characteristics)
• Mounting Type: Through Hole (maintains PCB assembly compatibility)
• Package / Case: Radial (maintains physical footprint compatibility)
• Termination: PC Pins (maintains soldering compatibility)

The BFC237051392 from Vishay Beyschlag/Draloric/BC Components meets all substitution criteria with matching capacitance, tolerance, voltage rating, dielectric type, and mounting configuration. The substitute part features an active product status and extended operating temperature range, providing improved availability and thermal performance.

Parameter Comparison

Engineering Selection Recommendations

The BFC237051392 is a direct functional equivalent for the ECQ-M4392KZ based on matching electrical specifications: identical capacitance value, tolerance, and DC voltage rating. The substitute part carries active product status with established supply chain availability, addressing the obsolescence of the original component.

The BFC237051392 is rated to AEC-Q200 automotive standards and carries RoHS3 compliance, providing enhanced reliability documentation for applications requiring automotive-grade components. The extended operating temperature range (-55°C ~ 105°C) provides superior thermal performance compared to the original specification (-40°C ~ 85°C).

Physical dimensions differ between the two parts. The substitute is more compact (7.20mm L x 2.50mm W vs. 12.00mm L x 6.50mm W) with reduced lead spacing (5.08mm vs. 7.50mm). PCB layout verification is required to confirm mechanical fit within the existing footprint before implementation.

Frequently Asked Questions (FAQ)

Q: Can the BFC237051392 be used as a direct replacement for the ECQ-M4392KZ?

A: The BFC237051392 is electrically equivalent with matching capacitance, tolerance, and voltage rating. However, physical dimensions and lead spacing differ. PCB layout compatibility must be verified before substitution.

Q: What is the significance of the metallized polyester dielectric in the substitute part?

A: Metallized polyester maintains the same electrical performance as standard polyester film while offering improved volumetric efficiency. Both materials are compatible for general-purpose filtering applications.

Q: Does the extended operating temperature range of the substitute part affect circuit performance?

A: The wider temperature range (-55°C ~ 105°C) of the BFC237051392 provides enhanced thermal margin. Circuit performance remains equivalent within the original operating specification (-40°C ~ 85°C).

Q: Are there compliance differences between the original and substitute parts?

A: The BFC237051392 carries AEC-Q200 automotive qualification and RoHS3 compliance. The original ECQ-M4392KZ does not list these certifications. Applications requiring automotive-grade components benefit from the substitute's enhanced qualification status.

Q: What should be verified before implementing the BFC237051392 in production?

A: Verify PCB footprint compatibility due to different lead spacing (5.08mm vs. 7.50mm). Confirm mechanical clearance in the assembly. Electrical performance is equivalent for all general-purpose applications.