ECQ-E4474KZ Equivalent & Substitute Parts

Part Overview

The ECQ-E4474KZ is a 0.47 µF film capacitor rated for 400V DC operation with polyester metallized dielectric construction. Manufactured by Panasonic Electronic Components, this radial through-hole component is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity.

Substiute Parts

ECQ-E4474KZ

Panasonic Electronic ComponentsIn Stock: 1126ECQ-E4474KZ Datasheet

Current PartRFQ

ECQ-E6474KF

Panasonic Electronic ComponentsIn Stock: 5000310ECQ-E6474KF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ECQ-E4474KZ is determined by the following critical parameters:

• Capacitance value: 0.47 µF (exact match required)
• Tolerance: ±10% (exact match required)
• Dielectric material: Polyester, Metallized (exact match required)
• Mounting type: Through Hole Radial (exact match required)
• Termination: PC Pins (exact match required)
• Voltage rating: Minimum 400V DC (equal or higher acceptable)
• Operating temperature range: Minimum -40°C ~ 85°C (equal or wider acceptable)

The ECQ-E6474KF meets all substitution criteria with enhanced voltage rating (630V DC) and extended operating temperature range (-40°C ~ 105°C), providing superior performance margins while maintaining identical capacitance, tolerance, dielectric type, and mounting configuration.

Parameter Comparison

Engineering Selection Recommendations

The ECQ-E6474KF is the direct functional equivalent for ECQ-E4474KZ replacement. The substitute part maintains identical electrical specifications (0.47 µF, ±10% tolerance, polyester metallized dielectric) while providing enhanced voltage rating (630V DC versus 400V DC) and extended operating temperature range (-40°C ~ 105°C versus -40°C ~ 85°C).

The ECQ-E6474KF carries active product status with ROHS3 compliance and REACH unaffected certification, ensuring long-term availability and regulatory alignment. Physical dimensions differ slightly; lead spacing is reduced from 25.50mm to 22.50mm, and overall height increases from 18.00mm to 19.50mm. PCB layout verification is required to confirm mechanical compatibility in the target application.

Frequently Asked Questions (FAQ)

Q: Can ECQ-E6474KF directly replace ECQ-E4474KZ without circuit modification?

A: Electrical substitution is valid. The substitute part meets or exceeds all electrical requirements. Physical layout verification is necessary due to differences in lead spacing (25.50mm versus 22.50mm) and component height (18.00mm versus 19.50mm).

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

A: The ECQ-E6474KF is rated for 630V DC compared to the original 400V DC specification. This provides additional voltage margin and does not affect circuit operation when the original design operates below 400V DC.

Q: Are there compliance differences between the two parts?

A: The ECQ-E6474KF includes ROHS3 compliance and REACH unaffected certification. The original ECQ-E4474KZ specifications do not include these certifications. For applications requiring regulatory compliance documentation, the substitute part provides current standards alignment.

Q: What is the impact of the extended operating temperature range?

A: The ECQ-E6474KF operates across -40°C ~ 105°C versus the original -40°C ~ 85°C range. This extended range provides additional thermal margin and does not affect applications operating within the original temperature specification.

Q: Are there any lead spacing considerations for PCB redesign?

A: Lead spacing differs: ECQ-E4474KZ uses 25.50mm spacing while ECQ-E6474KF uses 22.50mm spacing. PCB footprint modification may be required. Component height also increases from 18.00mm to 19.50mm, requiring clearance verification in the assembly.