ECW-FD2J395JC Film Capacitor Equivalent & Substitute Parts

Part Overview

The ECW-FD2J395JC is a 3.9 µF film capacitor manufactured by Panasonic Electronic Components, rated for 630V DC operation with polypropylene dielectric material. This radial through-hole component is designed for EMI/RFI suppression, high-frequency switching, and high pulse applications. The part is currently active in production with full inventory availability. Substitute parts are identified when equivalent electrical and mechanical parameters align within the allowed specifications for this product category, enabling direct replacement in circuit designs without performance degradation.

Substiute Parts

ECW-FD2J395JC

Panasonic Electronic ComponentsIn Stock: 1165ECW-FD2J395JC Datasheet

Current PartRFQ

ECW-FD2J395J

Panasonic Electronic ComponentsIn Stock: 1337ECW-FD2J395J Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ECW-FD2J395JC are identified based on strict equivalence of the following critical parameters:

• Capacitance value: 3.9 µF
• Tolerance: ±5%
• DC voltage rating: 630V
• Dielectric material: Polypropylene (PP), Metallized
• Operating temperature range: -40°C ~ 105°C
• Mounting type: Through Hole
• Package type: Radial
• Physical dimensions and lead spacing
• Series classification: ECW-F(D)
• Compliance certifications: ROHS3, REACH Unaffected

The ECW-FD2J395J qualifies as a parametric equivalent substitute. Both parts share identical electrical specifications, physical dimensions, and compliance status within the ECW-F(D) series. The presence of AC voltage rating (141V) in the substitute part does not affect DC circuit compatibility, as the DC rating remains the controlling specification for applications requiring 630V DC operation.

Parameter Comparison

Engineering Selection Recommendations

Both the ECW-FD2J395JC and ECW-FD2J395J are active production parts manufactured by Panasonic Electronic Components with full ROHS3 compliance and REACH unaffected status. Selection between these parts is based on inventory availability and supply chain considerations rather than electrical or mechanical performance differences. The ECW-FD2J395JC currently maintains 1106 units in stock, while the ECW-FD2J395J maintains 1318 units. Both parts meet all regulatory requirements for applications requiring 630V DC rated film capacitors with 3.9 µF capacitance in radial through-hole configuration.

Frequently Asked Questions (FAQ)

Q: Can ECW-FD2J395J be used as a direct replacement for ECW-FD2J395JC?

A: Yes. Both parts are parametric equivalents with identical capacitance (3.9 µF), tolerance (±5%), DC voltage rating (630V), dielectric material (polypropylene metallized), operating temperature range (-40°C ~ 105°C), and physical dimensions. Direct PCB substitution is supported without circuit modification.

Q: What is the significance of the AC voltage rating difference?

A: The ECW-FD2J395J includes an AC voltage rating of 141V, while the ECW-FD2J395JC does not specify an AC rating. For DC-only applications, this difference is not relevant. The DC voltage rating of 630V is the controlling specification for both parts in DC circuits.

Q: Are the physical dimensions identical?

A: Yes. Both parts share identical dimensions (0.996" L x 0.654" W / 25.30mm x 16.60mm), height (0.929" / 23.60mm), and lead spacing (0.886" / 22.50mm). PCB footprints and mounting requirements are identical.

Q: Do both parts meet current compliance standards?

A: Yes. Both ECW-FD2J395JC and ECW-FD2J395J are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and use.

Q: What applications are these capacitors suitable for?

A: Both parts are rated for EMI/RFI suppression, high-frequency switching, and high pulse/DV/DT applications. The 630V DC rating and polypropylene dielectric material support these use cases across the specified operating temperature range.